CN119197417B - Linear measuring device and measuring method for prefabricated bent cap - Google Patents

Abstract

The utility model provides a prefabricated bent cap linear measurement device and measuring method thereof, belongs to bent cap measurement technical field, including supporting element, measuring device includes the base, and two risers are perpendicular and fixed to be installed on the base, and two risers set up for the base bilateral symmetry, and measuring device still includes measuring element, and measuring element is including the first measuring mechanism that is used for measuring horizontal length and the second measuring mechanism that is used for measuring the angle of inclination. According to the invention, the linear measurement of the horizontal length and the side inclination angle of the bent cap can be realized, the measurement of the horizontal length and the side inclination angle is carried out through the same equipment, the equipment is not required to be replaced, the detection requirements in two directions can be met by one-time positioning, the precision of the way of respectively positioning and measuring in two directions is higher, the positioning error generated in the respective positioning process is avoided, the accuracy of the measurement result of the bent cap can be ensured, and the positioning block can be automatically positioned after being embedded from left to right to the bottom end of the limiting column.

Description

Linear measuring device and measuring method for prefabricated bent cap

Technical Field

The invention belongs to the technical field of bent cap measurement, and particularly relates to a prefabricated bent cap linear measurement device and a measurement method thereof.

Background

The capping beam refers to a cross beam, also called a capping beam, arranged at the top of the bent pile pier for supporting, distributing and transmitting the load of the upper structure. In order to improve the construction efficiency, the prefabricated components are often used in the construction of highway viaducts. The prefabricated components are produced in a prefabricated factory, and are connected in an equivalent cast-in-situ mode, a sleeve grouting mode and the like after being transported to a construction site, compared with the cast-in-situ mode, the prefabricated components are adopted in bridge engineering, the template consumption is saved, the construction time is shortened, great advantages are achieved, the requirement on the accuracy is achieved, and the size, the position and the like of the prefabricated components can meet the problem which needs to be solved according with the connection condition.

In the related art (publication number CN 112227213B), a prefabricated bent cap and stand prefabricated assembly guiding positioning method and a guiding frame are disclosed, the method comprises marking the positions of four theoretical mounting points on a bearing platform for mounting a stand, then erecting the guiding frame on the top surface of the stand, intersecting the central axes of four guiding arms of the guiding frame with the axes of reinforcing steel bars at four vertex angles on the top surface of the stand, extending the projection of one end point of each guiding arm on the top surface of the bearing platform outside the projection area of the stand section, marking the projection position of the end point in each guiding arm on the bearing platform, wherein the position is the actual mounting point position of the stand, measuring the distance between each theoretical mounting point and the corresponding actual mounting point, comparing the distance with the distance threshold related to the diameter of the reinforcing steel bars in the stand and the inner diameter of the bent cap sleeve, and if the distances are not met, adjusting the horizontal position of the stand until the distances are all smaller than or equal to the distance threshold.

According to the technical scheme, the measurement, the assembly and the guide are mainly performed on the assembled size and position of the bent cap and the upright post, but before the bent cap is put into use, the linear measurement of the horizontal length and the side inclination angle is required to be performed so as to detect whether the finished product of the bent cap meets the requirements, so that a special device is required to perform the linear measurement on the prefabricated bent cap.

Disclosure of Invention

Aiming at the problems that the linear measurement of the horizontal length and the side inclination angle is required before the bent cap in the prior art is put into use so as to detect whether the finished bent cap meets the requirements, the invention provides the prefabricated bent cap linear measurement device and the measurement method thereof, which can realize the linear measurement of the horizontal length and the side inclination angle of the bent cap, and the measurement of the horizontal length and the side inclination angle is carried out by the same equipment without equipment replacement, and the disposable positioning can meet the detection requirements in two directions, has higher precision compared with the mode of respectively positioning and respectively measuring in two directions, avoids the positioning error generated in the process of respectively positioning, and can further ensure the accuracy of the measurement result of the bent cap. The specific technical scheme is as follows:

The measuring device comprises a support unit, wherein the support unit comprises a base, two vertical plates are vertically and fixedly arranged on the base, the two vertical plates are symmetrically arranged relative to the base, the measuring device further comprises a measuring unit, the measuring unit comprises a first measuring mechanism for measuring the horizontal length and a second measuring mechanism for measuring the inclined angle, and the first measuring mechanism and the second measuring mechanism are driven by the same driving mechanism;

The driving mechanism comprises a driving shaft, a first bevel gear is fixedly arranged on the driving shaft, a motor is connected to the right end of the driving shaft, the output end of the motor is connected with the right end of the driving shaft, a bearing frame is arranged at the bottom end of the motor, a first moving block is fixedly arranged at the bottom end of the bearing frame, a first limit groove is formed in the base, the first moving block is embedded in the first limit groove in a sliding manner, a cylinder is arranged on the base, and the output end of the cylinder is connected with the right side wall of the first moving block;

the driving shaft penetrates through the outer walls of the two vertical plates in a sliding mode along the horizontal direction.

In the above technical scheme, the first measuring mechanism comprises a first screw rod rotationally connected to the vertical plate along the horizontal direction, external threads with opposite and symmetrical directions are arranged on the left side and the right side of the first screw rod, two second limit grooves are symmetrically formed on the left side and the right side of the upper surface of the base, a second moving block is embedded in each second limit groove in a sliding manner, two moving seats are respectively sleeved on the left side and the right side of the first screw rod in a symmetrical threaded manner, and the moving seats are fixedly connected with the second moving blocks at corresponding positions;

And the first screw is fixedly provided with a third bevel gear, and in a first state, the third bevel gear is meshed and connected with the left side wall of the first bevel gear.

In the above technical scheme, the first measuring mechanism further comprises a first vertical plate fixedly and vertically arranged above the right movable seat, a first mounting frame is fixedly arranged at the top end of the first vertical plate, a second vertical plate is fixedly and vertically arranged above the left movable seat, a positioning frame is arranged at the top end of the second vertical plate, a second mounting frame is arranged at the top end of the positioning frame, and tips are respectively arranged above the second mounting frame and the first mounting frame;

Wherein, first riser left side wall with the pointed end on first mounting bracket top is located same vertical line.

According to the technical scheme, the range finder is placed in the positioning frame, the positioning bolt is arranged on the top end of the positioning frame in a threaded manner, the bottom end part of the positioning bolt penetrates through the positioning frame in a downward threaded manner and extends into the positioning frame, and the bottom end part of the positioning bolt is attached to the upper surface of the range finder;

wherein, range finder output with the pointed end on second mounting bracket top is located same vertical line.

In the above technical scheme, the second measuring mechanism comprises a second screw rod which is rotationally connected to the vertical plate along the horizontal direction, external threads which are opposite in direction and symmetrical are arranged on the left side and the right side of the second screw rod, two moving plates are respectively sleeved with threads which are symmetrical on the left side and the right side of the second screw rod, through grooves are formed in each moving plate from left to right, racks are fixedly arranged on each moving plate, the racks on the left side are embedded in the second mounting frame along the horizontal direction in a sliding manner, and the racks on the right side are embedded in the first mounting frame along the horizontal direction in a sliding manner;

and in a second state, the second bevel gear is meshed and connected with the right side wall of the first bevel gear.

In the above technical scheme, the second mounting bracket with first mounting bracket inner wall bottom is installed spacing seat respectively, two respectively fixed mounting has the removal strip in the rack bottom, every remove the strip slip is embedded in corresponding position in the spacing seat.

Among the above-mentioned technical scheme, second measuring mechanism still including rotate respectively connect in the second mounting bracket with the pivot on first mounting bracket top, fixed mounting has incomplete gear and measuring stick in the pivot, incomplete gear with the rack engagement is connected, the second mounting bracket with the protractor is installed respectively to first mounting bracket front side wall, the pointer is installed to the pivot front end, the pivot front end pointer the measuring stick is all for the centre of a circle of protractor rotates.

In the technical scheme, the supporting unit comprises a rack, a limiting column is vertically arranged in the middle of the front side of the rack, and a self-locking mechanism connected with the base is arranged at the bottom end of the limiting column;

The self-locking mechanism comprises a yielding groove which is formed in the bottom end of the left side wall of the limiting column, a limiting piece is arranged above the yielding groove in a lifting manner, the limiting piece is arranged on the limiting column in a sliding manner, an inclined plane is arranged on the left side of the bottom end of the limiting piece, the inclined plane is obliquely arranged from left to right in a descending manner, a spring is arranged below the limiting piece, the bottom end of the spring is connected with the surface of the limiting column, a telescopic rod is arranged in the spring, two ends of the telescopic rod are respectively connected with the limiting piece and the limiting column, a positioning block is fixedly arranged in the middle of the front side wall of the base, and the positioning block is embedded in the inner cavity of the bottom end of the limiting column;

The lifting assembly is arranged on the limiting piece and comprises a connecting pin fixedly mounted on the limiting piece, a lifting piece is fixedly mounted on the top end of the connecting pin, and a groove is formed in the bottom end of the lifting piece.

In the above technical scheme, the supporting unit further comprises a plurality of connecting columns vertically installed at the bottom end of the rack, the bottom ends of the connecting columns are fixedly provided with a bottom frame, the rear side of the bottom frame is fixedly provided with a bottom plate, a connecting plate is fixedly installed between the bottom plate and the rack, a balancing weight is installed between the connecting plate and the bottom plate, and the balancing weight is placed on the bottom plate;

The bent cap is placed in the rack, the intersection of the bottom edge and the side edge of the bent cap is an intersection edge, the top end of the intersection edge is provided with a lifting hook, and the top end of the lifting hook is hooked with a lifting rope.

The invention also provides a measuring method, which comprises any one of the prefabricated bent cap linear measuring devices, and comprises the following steps:

S1, placing and positioning a bent cap, and ensuring that the bent cap is stably and flatly placed in a rack;

s2, positioning a measuring device at the front side of the bent cap, and ensuring that the center of the measuring device is collinear with the center of the bent cap;

s3, adjusting two tips at the left side and the right side to respectively correspond to two intersection edges;

S4, adjusting the measuring device to be in a first state, and measuring the horizontal length of the bottom edge of the bent cap;

Adjusting the measuring device to a second state, and measuring the inclination angle of the side plate of the bent cap;

the first state and the second state are adjusted according to the requirement, and the sequence is not sequential;

And S5, after the measurement is finished, separating the measuring device from the limiting column, and ending the measurement.

Compared with the prior art, the prefabricated bent cap linear measuring device and the measuring method thereof have the beneficial effects that:

1. According to the invention, the horizontal length of the bottom edge of the bent cap can be measured through the cooperation of the distance meter and the first vertical plate, the measurement of the inclined angle of the bottom edge and the side edge of the bent cap can be realized through the rotation of the measuring rod relative to the rotating shaft, and the measurement of the horizontal length and the inclined angle of the side edge is performed through the same equipment without changing the equipment;

2. According to the invention, the tip is regulated to the intersection edge of the corresponding bent cap, so that the correspondence between the measuring device and the bent cap can be realized, the measuring equipment is not required to be moved any more in the follow-up process, the linear measurement of the horizontal length and the side inclination angle of the bent cap can be realized, the one-time positioning can meet the detection requirements in two directions, the precision is higher relative to the mode of respectively positioning and respectively measuring in the two directions, the positioning error generated in the respective positioning process is avoided, and the accuracy of the measurement result of the bent cap can be ensured;

3. According to the invention, through the movement of the driving shaft, the first bevel gear, the motor, the bearing frame and the first moving block, the third bevel gear or the second bevel gear can be respectively driven to rotate so as to realize the sequential rotation of the first screw rod or the second screw rod, and the sequential measurement of the horizontal length of the bottom edge of the bent cap and the inclination angle of the side edge of the bent cap can be realized;

4. According to the invention, relative displacement adjustment of two movable seats on the first screw is realized through the rotating first screw, and adjustment and positioning of the distance meter relative to the position of the intersection edge are realized, so that the measurement of the horizontal length of the bottom edge of the bent cap is realized by means of the distance meter;

5. According to the invention, the relative positions of the two moving plates and the two racks are adjusted through the rotating second screw, so that the relative rotation of the two measuring rods is realized, the rotation of the two measuring rods close to the side edge of the bent cap is realized, and the measurement of the side inclination angle of the bent cap is realized by means of the angle compensation property of a flat angle;

6. According to the invention, through the first screw rod and the left and right symmetrically arranged movable seats, the tip end of the top end of the second mounting frame and the tip end of the top end of the first mounting frame are respectively corresponding to the two intersection edges on the left and right sides of the connecting pin, so that the datum point is ensured to be unchanged all the time when the horizontal length and the inclination angle of the equipment are measured subsequently;

7. According to the invention, through the second screw rod and the left and right symmetrical moving plates, the left and right racks can be driven to synchronously move in opposite directions, so that the incomplete gears, the measuring rod and the rotating shaft on the left and right sides can rotate at the same angle, and the measurement of the inclination angles on the left and right sides of the bent cap can be realized;

8. According to the invention, the positioning blocks are positioned in the limiting columns, so that the collinear alignment of the measuring device and the vertical central axis of the bent cap can be realized, namely, the collinear alignment of the central point of the measuring device and the central point of the bent cap is ensured, and further, the equidistant movement of two movable seats and two movable plates of subsequent measuring equipment to two sides relative to the central point of the bent cap is ensured, and the problem that the accuracy of a detection result is influenced due to the deflection of the measuring device relative to the bent cap is avoided;

9. According to the invention, through the matching of the abdication groove, the limit piece, the inclined plane, the spring and the telescopic rod, the automatic positioning can be realized after the positioning block is embedded from left to right to the bottom end of the limit post, the positioned positioning block can ensure that the measuring equipment corresponds to the center point of the bent cap, the automatic alignment and locking limit of the measuring equipment and the center point of the bent cap can be realized, the unnecessary positioning alignment steps between the measuring equipment and the bent cap are not needed manually, the measuring time is saved, and the measuring efficiency is improved;

10. According to the invention, through the arrangement of the spring and the telescopic rod, the positioning block can be automatically limited after entering the inner cavity at the bottom end of the limiting column along the inclined plane, and the limiting piece and the inclined plane can be driven to be separated from the limiting of the positioning block through the lifting piece by virtue of the connecting pin, the lifting piece and the groove, so that the front side of the capping beam is separated after the measuring device is used;

11. According to the invention, the stand can be supported through the connecting column, the underframe, the bottom plate and the connecting plate, so that the stand is far away from the ground, and enough space is reserved for the bent cap to be placed at the stand for the measuring equipment to detect the bottom edge horizontal length and the side edge inclination angle measurement of the bent cap;

12. According to the invention, the reinforcing auxiliary connection is carried out between the bottom plate and the connecting plate through the arrangement of the reinforcing frame, so that the position between the bottom plate and the connecting plate is more stable, the position of the rack is more stable, and the rack can be ensured to stably support the bent cap through the arrangement of the balancing weight, and the rack and the bent cap are prevented from tipping forward;

13. The invention is provided with the lifting hook and the lifting rope, so that the bent cap can be lifted and placed in the rack, and the bent cap is kept a sufficient distance from the ground for the follow-up measurement work;

In summary, the invention can realize the linear measurement of the horizontal length and the side inclination angle of the bent cap, the measurement of the horizontal length and the side inclination angle is carried out by the same equipment without changing the equipment, the disposable positioning can meet the detection requirements in two directions, the precision of the way of respectively positioning and measuring relative to the two directions is higher, the positioning error generated in the respective positioning process is avoided, the accuracy of the measuring result of the bent cap can be ensured, in addition, the positioning block is embedded from left to right to the bottom end of the limit post, the automatic positioning can be realized, the positioning block after the positioning can ensure the corresponding of the measuring equipment and the center point of the bent cap, namely, the automatic alignment and locking limit of the measuring equipment and the center point of the bent cap are realized, the unnecessary positioning and aligning steps between the measuring equipment and the bent cap are not needed, the measuring time is saved, and the measuring efficiency is improved.

Drawings

FIG. 1 is a front view of a base of the present invention;

FIG. 2 is a schematic view of the structure of the intersection edge of the present invention;

FIG. 3 is a schematic view of the structure of a first bevel gear according to the present invention;

FIG. 4 is an enlarged view at A of FIG. 2;

FIG. 5 is a schematic view of a spacing post according to the present invention;

FIG. 6 is a schematic view of the structure of the support frame of the present invention;

FIG. 7 is an enlarged view at B of FIG. 5;

FIG. 8 is a schematic view of the structure of the measuring rod of the present invention;

FIG. 9 is a schematic diagram of a range finder according to the present invention;

FIG. 10 is a schematic view of a limiting seat according to the present invention;

FIG. 11 is a rear view of the reinforcement cage of the present invention;

In fig. 1 to 11, 1, a rack, 2, a base, 3, a riser, 4, a drive shaft, 5, a first bevel gear, 6, a motor, 7, a supporting frame, 8, a first moving block, 9, a first limiting groove, 10, an air cylinder, 11, a first screw, 12, a second limiting groove, 13, a second moving block, 14, a moving seat, 15, a first riser, 16, a first mounting bracket, 17, a second riser, 18, a positioning bracket, 19, a second mounting bracket, 20, a tip, 21, a range finder, 22, a positioning bolt, 23, a second screw, 24, a second bevel gear, 25, a moving plate, 26, a through groove, 27, a rack, 28, a limit seat, 29, a moving bar, 30, a rotating shaft, 31, an incomplete gear, 32, a measuring rod, 33, a protractor, 34, a limit post, 35, a yielding groove, 36, a limit piece, 37, an inclined plane, 38, a spring, 39, a telescopic rod, 40, a connecting pin, 41, a lifting piece, 42, a groove, 43, a connecting post, 44, a locating block, 45, a bottom plate, 46, a connecting plate, 47, a reinforcing frame, 48, a balancing weight, 49, a cover beam, 50, an intersection edge, 51, a lifting hook, 52, a lifting rope, 53, a third bevel gear, 54 and a bottom frame.

Detailed Description

The invention will be further described with reference to specific embodiments and figures 1 to 11, but the invention is not limited to these embodiments.

Referring to fig. 1 to 11, a prefabricated capping beam linear measurement device includes a support unit, the capping beam is supported by the support unit so as to perform linear measurement on the bottom edge horizontal length and the side inclination angle of the capping beam, the measurement device includes a base 2, two vertical plates 3 are vertically and fixedly installed on the base 2, support is provided for installation of other components through the two vertical plates 3, the two vertical plates 3 are symmetrically arranged relative to the base 2, the measurement device further includes a measurement unit, the measurement unit includes a first measurement mechanism for measuring the horizontal length and a second measurement mechanism for measuring the inclination angle, the first measurement mechanism and the second measurement mechanism are driven by the same driving mechanism in sequence, no replacement equipment is needed, the linear measurement of the bottom edge horizontal length and the side inclination angle of the capping beam is performed by the same equipment, the linear measurement of the horizontal length and the side inclination angle of the capping beam can be realized without moving the measurement equipment after the measurement equipment is positioned, the linear measurement of the horizontal length and the side inclination angle of the capping beam can be realized, the linear measurement of the capping beam can meet the detection requirements in two directions, the positioning accuracy in two directions can be ensured, and the measurement error in the positioning process can be avoided respectively;

Referring mainly to fig. 1, fig. 2, fig. 5 and fig. 6, the driving mechanism comprises a driving shaft 4, a first bevel gear 5 is fixedly installed on the driving shaft 4, a motor 6 is connected to the right end of the driving shaft 4, the output end of the motor 6 is connected to the right end of the driving shaft 4, the driving shaft 4 and the first bevel gear 5 can be driven to rotate circumferentially through the opened motor 6, a supporting frame 7 is installed at the bottom end of the motor 6, the motor 6 is supported through the supporting frame 7, the motor 6 can be driven to move synchronously through the movement of the supporting frame 7, the position of the first bevel gear 5 is adjusted, a first moving block 8 is fixedly installed at the bottom end of the supporting frame 7, a first limiting groove 9 is formed in the base 2, the first moving block 8 is slidably embedded in the first limiting groove 9, a cylinder 10 is installed on the base 2, the output end of the cylinder 10 is connected to the right side wall of the first moving block 8, the cylinder 10 can drive the first moving block 8 to move when being opened, and further drive the supporting frame 7 and the motor 6 and the first bevel gear 5 to move horizontally, wherein the supporting frame 4 can move vertically along the horizontal direction, the driving shaft 4 can not be influenced by the vertical movement of the driving shaft 3, and the vertical plate 3 can not be influenced vertically.

Referring to fig. 6, the first measuring mechanism comprises a first screw 11 rotatably connected to the vertical plate 3 along the horizontal direction through a bearing, external threads with opposite and symmetrical directions are arranged on the left side and the right side of the first screw 11, two second limit grooves 12 are symmetrically arranged on the left side and the right side of the upper surface of the base 2, a second moving block 13 is embedded in each second limit groove 12 in a sliding manner, two moving seats 14 are respectively arranged on the left side and the right side of the first screw 11 in a sleeved manner, the moving seats 14 are fixedly connected with the second moving block 13 at corresponding positions, the rotating first screw 11 drives the two symmetrical moving seats 14 to synchronously move outwards or inwards along the second limit grooves 12 at corresponding positions, at the moment, the second moving block 13 at the bottom end of the moving seat 14 moves along the second limit grooves 12 at corresponding positions, a third bevel gear 53 is fixedly arranged on the first screw 11, the third bevel gear 53 is meshed with the left side wall of the first bevel gear 5 in a connecting manner, the first bevel gear 5 is meshed with the left side wall of the third bevel gear 53, and the first bevel gear 53 is driven by a motor to rotate, and the first bevel gear 5 is driven to synchronously move outwards or inwards by the first bevel gear 4 and the first bevel gear 53 is driven to synchronously move outwards, and the first bevel gear 53 is driven to synchronously rotate, and the two bevel gears 11 are synchronously rotated outwards, and synchronously, and the two bevel gears 53 are synchronously rotated, and the first bevel gear 53 are synchronously, and the two right side is correspondingly synchronously rotated, and the first bevel gear 5 is correspondingly, and the right side is correspondingly synchronously, and the right, and the second bevel gear is correspondingly synchronously rotated.

Referring mainly to fig. 1, 8 and 9, the first measuring mechanism further includes a first riser 15 fixed and vertically installed above the right side moving seat 14, a first mounting frame 16 is fixedly installed at the top end of the first riser 15, a second riser 17 is fixedly and vertically installed above the left side moving seat 14, a positioning frame 18 is installed at the top end of the second riser 17, a second mounting frame 19 is installed at the top end of the positioning frame 18, tips 20 are respectively arranged above the second mounting frame 19 and the first mounting frame 16, the left side moving seat 14 moves to drive the left side second riser 17, the positioning frame 18 and the second mounting frame 19 to synchronously move to the left, the right side moving seat 14 moves to drive the right side first riser 15 and the first mounting frame 16 to synchronously move to the right until the tips 20 at the top end of the second mounting frame 19 and the tips 20 at the top end of the first mounting frame 16 respectively correspond to the junction of the cover beam bottom edge and the side edge; wherein the left side wall of the first vertical plate 15 and the tip 20 at the top end of the first mounting frame 16 are positioned on the same vertical line, namely the distance between the left tip 20 and the right tip 20 is the distance between the bottom edge of the cover beam 49 and the horizontal length of the bottom edge of the cover beam 49, thereby realizing the measurement of the horizontal length distance between the bottom edge of the cover beam 49, the distance meter 21 is placed in the positioning frame 18, the positioning frame 18 is provided with a positioning bolt 22 by screw threads, the bottom end part of the positioning bolt 22 penetrates the positioning frame 18 downwards and extends into the positioning frame 18, the bottom end part of the positioning bolt 22 is attached to the upper surface of the distance meter 21, wherein the output end of the distance meter 21 and the tip 20 at the top end of the second mounting frame 19 are positioned on the same vertical line, and the distance between the output end of the distance meter 21 and the left side wall of the first vertical plate 15 is positioned on the same vertical line as the tip 20 at the top end of the first mounting frame 16, in the present invention, the distance meter 21 is a phase method laser distance measuring device commonly used in the existing market, and detects the distance by detecting the phase difference generated when the emitted light and the reflected light propagate in the space, which is the existing device, and the principle and model of the distance meter are not limited and described in detail herein.

Referring mainly to fig. 1, 6 and 9, the second measuring mechanism comprises a second screw rod 23 which is rotatably connected to the vertical plate 3 along the horizontal direction through a bearing, external threads which are opposite in direction and symmetrical are arranged on the left side and the right side of the second screw rod 23, two moving plates 25 are respectively sleeved on the left side and the right side of the second screw rod 23 in a symmetrical mode, through grooves 26 are formed in each moving plate 25 from left to right, racks 27 are fixedly arranged on each moving plate 25, the racks 27 on the left side are slidably embedded in the second mounting frame 19 along the horizontal direction, the racks 27 on the right side are slidably embedded in the first mounting frame 16 along the horizontal direction, a second bevel gear 24 is fixedly arranged on the second screw rod 23, in a second state, the second bevel gear 24 is in meshed connection with the right side wall of the first bevel gear 5, the first moving block 8 is driven to move to the right side through an opened cylinder 10, so that the supporting frame 7 and a motor 6, a driving shaft 4 and the first bevel gear 5 are driven to move to the right side, the first bevel gear 5 is separated from the outer wall of the third bevel gear 53 and is connected with the outer wall of the second bevel gear 24 in a meshed state, the racks 27 are driven to move to the right side through the second bevel gear 4, and the second bevel gear 24 is driven to move to the two side, and the two side of the second bevel gears are correspondingly rotated to the right side of the second bevel gear 24 is driven to move towards the right side through the driving shaft 4, and the second bevel gear 24 is driven to move synchronously, and the second bevel gear 24 is driven to move towards the right side through the right side 25.

Referring to fig. 10, the bottom ends of the inner walls of the second mounting frame 19 and the first mounting frame 16 are respectively provided with a limiting seat 28, the bottom ends of the two racks 27 are respectively and fixedly provided with a moving bar 29, each moving bar 29 is embedded in the corresponding limiting seat 28 in a sliding manner, when the racks 27 move, the moving bar 29 can be driven to move along the corresponding limiting seat 28, and the moving direction of the moving bar 29 is limited by the limiting seat 28, so that stable horizontal movement of the racks 27 is realized.

Referring mainly to fig. 1, 8, 9 and 10, the second measuring mechanism further includes a rotating shaft 30 rotatably connected to the top ends of the second mounting frame 19 and the first mounting frame 16 through bearings, an incomplete gear 31 and a measuring rod 32 are fixedly mounted on the rotating shaft 30, the incomplete gear 31 is meshed with the rack 27, and the front side walls of the second mounting frame 19 and the first mounting frame 16 are respectively provided with a protractor 33, wherein the protractor 33 is a commonly used 360-degree protractor in the market, the protractor 33 is provided with a pointer coaxial with the rotating shaft 30, and the pointer rotates along the surface of the protractor 33, namely, the rotating angle of the measuring rod 32, and the measurement of the side inclination angle of the cover beam 49 is realized by means of the angle supplementing property of a flat angle; the pointer is installed to pivot 30 front end, pivot 30 front end pointer, measuring stick 32 all rotate relative to the centre of a circle of protractor 33, when rack 27 and the removal strip 29 of corresponding position are synchronous to outside remove, can drive left and right two incomplete gear 31 outside rotations, drive the synchronous rotation of pointer of measuring stick 32 when incomplete gear 31 rotates, pivot 30, pointed end 20 and protractor 33 front side, until the side of measuring stick 32 laminating bent cap, the pointer of protractor 33 front side is the angle of rotation relative to protractor 33 this moment, namely the rotation angle of measuring stick 32 for the bent cap side, with the help of the supplementary angular nature of flat angle, 180 degrees subtract the rotation angle of measuring stick 32, namely the angle of bent cap side inclination, realize the measurement of bent cap side inclination.

The self-locking mechanism comprises a yielding groove 35 which is arranged at the bottom end of the left side wall of the limiting column 34, a limiting piece 36 which is arranged above the yielding groove 35 in a lifting and moving manner is arranged on the limiting column 34, an inclined surface 37 is arranged at the left side of the bottom end of the limiting piece 36 in a sliding manner, the inclined surface 37 is obliquely arranged from left to right in a descending manner, a spring 38 is arranged below the limiting piece 36, the bottom end of the spring 38 is connected with the surface of the limiting column 34, a telescopic rod 39 is arranged in the spring 38, two ends of the telescopic rod 39 are respectively connected with the limiting piece 36 and the limiting column 34, a positioning block 44 is fixedly arranged at the middle part of the front side wall of the base 2, and the positioning block 44 is embedded in the inner cavity of the bottom end of the limiting column 34;

the whole measuring device is placed along the front side of the bent cap and is pushed to move from left to right until the positioning block 44 touches the inclined surface 37 and drives the inclined surface 37 and the limiting piece 36 to be forced to move upwards, the spring 38 is forced to stretch, the telescopic rod 39 is forced to stretch, after the positioning block 44 moves to be embedded in the inner cavity of the bottom end of the limiting post 34, the inclined surface 37 loses driving force at the moment, the whole telescopic rod 39 is enabled to be shortened under the elastic force of the spring 38, the limiting piece 36 and the inclined surface 37 are enabled to synchronously move downwards, the limiting piece 36 and the inclined surface 37 are enabled to restore to the initial position, the positioning block 44 is locked and limited, and stable connection relation is formed between the base 2 connected with the rear side of the positioning block 44 and the limiting post 34, so that the relative stability of the measuring device and the bent cap in the subsequent measuring process is guaranteed.

In addition, mainly referring to fig. 4 and 7, the lifting component is provided on the spacing piece 36, the lifting component includes a connecting pin 40 fixedly installed on the spacing piece 36, a lifting piece 41 is fixedly installed at the top end of the connecting pin 40, a groove 42 is provided at the bottom end of the lifting piece 41, the shape of a hand can be more adapted through the arrangement of the groove 42, the lifting piece 41 is lifted upwards by a finger placed at the groove 42, the lifting piece 41 can be more conveniently realized to drive the spacing piece 36 to move upwards, after the measuring device is used, the connecting pin 40 and the spacing piece 36 are synchronously moved upwards by lifting the lifting piece 41 upwards so as to drive the inclined plane 37 to separate from the spacing of the positioning piece 44, the measuring device is driven to move leftwards integrally, and the positioning piece 44 is separated from the inner cavity at the bottom end of the spacing post 34, namely the measuring device is separated from the spacing post 34.

Referring mainly to fig. 1 and 11, the supporting unit further includes a plurality of connection columns 43 vertically installed at the bottom end of the stand 1, a bottom frame 54 is fixedly installed at the bottom end of the connection columns 43, a bottom plate 45 is fixedly installed at the rear side of the bottom frame 54, a connection plate 46 is fixedly installed between the bottom plate 45 and the stand 1, a balancing weight 48 is installed between the connection plate 46 and the bottom plate 45, the balancing weight 48 is placed on the bottom plate 45, the stand 1 can be supported through the connection columns 43, the bottom frame 54, the bottom plate 45 and the connection plate 46, the stand 1 is far away from the ground, enough space is reserved after the cover beam is placed at the stand 1, for measurement equipment to detect the bottom edge horizontal length and the side edge inclination angle of the cover beam, reinforcing auxiliary connection is performed between the bottom plate 45 and the connection plate 46 through the arrangement of a reinforcing frame 47, the position between the bottom plate 45 and the connection plate 46 is enabled to be more stable, the position of the stand 1 is enabled to be more stable, and the cover beam 49 is prevented from being tipped forward through the arrangement of the balancing weight 48;

A capping beam 49 is placed in the rack 1, the intersection of the bottom edge and the side edge of the capping beam 49 is an intersection edge 50, the top end of the intersection edge 50 is provided with a lifting hook 51, the top end of the lifting hook 51 is hooked with a lifting rope 52, the end part of the lifting rope 52 is hooked at the lifting hook 51, the middle part of the lifting rope 52 is lifted by means of the existing lifting device so as to lift the capping beam 49 upwards from the ground, the capping beam 49 is moved and placed in the rack 1 by means of the lifting device, and the placement of the capping beam 49 is realized to be measured;

The intersection edge 50 is vertically and correspondingly arranged with the tip 20, the left movable seat 14 moves to drive the left second vertical plate 17, the locating frame 18 and the second mounting frame 19 to synchronously move leftwards, the right movable seat 14 moves to drive the right first vertical plate 15 and the first mounting frame 16 to synchronously move rightwards until the tip 20 at the top end of the second mounting frame 19 and the tip 20 at the top end of the first mounting frame 16 respectively correspond to the left intersection edge 50 and the right intersection edge 50, and therefore the relative position of the measuring device and the intersection edge 50 is located.

The invention also provides a measuring method, which comprises any prefabricated bent cap linear measuring device, and comprises the following steps:

S1, placing and positioning a cover beam 49, ensuring that the cover beam 49 is stably and flatly placed in a rack 1, wherein the rack 1 is suitable for cover beams 49 with different sizes, and after the cover beams 49 with different sizes are placed in the rack 1, the sinking depths are different, but the support and the positioning can be realized in the rack 1;

S2, positioning a measuring device on the front side of the bent cap 49, ensuring that the center of the measuring device is collinear with the center of the bent cap 49, and ensuring the accuracy of data when the subsequent measuring device detects the bent cap 49;

S3, adjusting the two tips 20 at the left side and the right side to respectively correspond to the two intersection edges 50 so as to ensure the distance for measuring the distance between the two tips 20, namely the distance between the two intersection edges 50 of the capping beam 49, namely the distance of the horizontal length of the bottom edge of the capping beam 49;

S4, adjusting the measuring device to be in a first state, and measuring the horizontal length of the bottom edge of the cover beam 49, wherein the output end of the range finder 21 corresponds to the position of the intersection edge 50 on the left side of the cover beam 49, and the left side wall of the first vertical plate 15 corresponds to the position of the intersection edge 50 on the right side of the cover beam 49, so that the laser is emitted to the left side wall of the first vertical plate 15 by means of the range finder 21 to realize the measurement of the horizontal length of the bottom edge of the cover beam 49;

the measuring device is adjusted to be in a second state, the inclination angle of the side plate of the capping beam 49 is measured, when the incomplete gear 31 rotates, the measuring rod 32, the rotating shaft 30, the pointed end 20 and the pointer on the front side of the protractor 33 are driven to synchronously rotate until the measuring rod 32 is attached to the side edge of the capping beam 49, at the moment, the rotation angle of the pointer on the front side of the protractor 33 relative to the protractor 33 is the rotation angle of the measuring rod 32 relative to the side edge of the capping beam 49, and by means of the angle compensation property of a flat angle, the rotation angle of the measuring rod 32 is subtracted by 180 degrees, namely the angle of the inclination angle of the side edge of the capping beam 49 is obtained, and the measurement of the inclination angle of the side edge of the capping beam 49 is realized;

The first state and the second state are adjusted according to the need, the first bevel gear 5 is meshed with the second bevel gear 24 to rotate firstly, and finally, the rotation of the two measuring rods 32 is realized, namely, the measurement of the side inclination angle of the bent cap 49 is realized firstly, and then, the range finder 21 is locked in the positioning frame 18 through the positioning bolt 22 for horizontal measurement, otherwise, the two measuring rods can also be used;

And S5, after the measurement is finished, separating the measuring device from the limiting column 34 to finish the measurement, wherein the step of separating the measuring device from the limiting column 34 specifically comprises the following steps of lifting the lifting sheet 41 upwards to enable the connecting pin 40 and the limiting sheet 36 to synchronously move upwards so as to enable the inclined surface 37 to separate from the limiting of the positioning block 44, driving the whole measuring device to move leftwards, and then separating the positioning block 44 from the inner cavity of the bottom end of the limiting column 34, namely separating the measuring device from the limiting column 34.

In the invention, the left and right sides of the first bevel gear 5 are provided with the threads respectively meshed with the third bevel gear 53 and the second bevel gear 24, namely, the left and right sides of the first bevel gear 5 are provided with the threads, the first bevel gear 5, the third bevel gear 53 and the second bevel gear 24 are bevel gears on the market, and the connection relation of the left side of the first bevel gear 5 meshed with the third bevel gear 53 and the right side of the first bevel gear 5 meshed with the second bevel gear 24 can be satisfied without redundant description and limitation.

When the measuring rod 32 of the invention rotates to the inclined side edge of the attached capping beam 49, the pointers in the rotating shaft 30 and the protractor 33 can be driven to synchronously rotate by the same angle, and the rotation angle is measured relative to the protractor 33 by means of the pointers in the protractor 33, namely the rotation angle of the measuring rod 32, and as the initial state of the measuring rod 32 and the bottom edge of the capping beam 49 are positioned on the same horizontal line, the supplementary angle of the rotation angle of the measuring rod 32 is the final angle of the side edge inclined angle of the capping beam 49, thereby realizing the measurement of the side edge inclined angle of the capping beam 49.

It should be noted that, the cylinder 10 adopted in the application is a common self-locking cylinder in the market, the output end of the cylinder can stay at any position and be locked, the motor 6 adopts a common self-locking motor with the output end capable of being locked in the market, the output end of the motor can be self-locked when the motor is stopped and cannot rotate under external force, the motor 6 is a positive and negative motor in the existing market, namely, the output end of the motor can rotate forward or backward as required, the telescopic rod 39 is an existing device, the telescopic rod 39 is composed of two rod bodies sleeved with each other, the telescopic change of the total length of the telescopic rod 39 can be realized under the action of external force, and the excessive repeated description of the existing components is omitted.

The working principle of the prefabricated bent cap linear measuring device and the measuring method thereof in the embodiment is as follows:

Firstly, placing and positioning a bent cap 49, namely hooking the end part of a lifting rope 52 at a lifting hook 51, lifting the middle part of the lifting rope 52 by means of an existing lifting device so as to lift the bent cap 49 upwards from the ground, and moving the bent cap 49 into a rack 1 by means of the lifting device so as to place the bent cap 49 to be measured;

The relative position of the measuring device and the cover beam 49 is locked and connected, namely the measuring device is integrally placed along the front side of the cover beam 49, the measuring device is pushed to move from left to right until the positioning block 44 touches the inclined plane 37 and drives the inclined plane 37 and the limiting plate 36 to be forced to move upwards, the spring 38 is forced to stretch, the telescopic rod 39 is forced to stretch, after the positioning block 44 is moved to be embedded in the inner cavity of the bottom end of the limiting column 34, the inclined plane 37 loses driving force, the telescopic rod 39 is integrally shortened under the elastic force of the spring 38, the limiting plate 36 and the inclined plane 37 are driven to synchronously move downwards, the limiting plate 36 and the inclined plane 37 are restored to the initial position, the positioning block 44 is locked and limited, so that a stable connection relation is formed between the base 2 connected with the rear side of the positioning block 44 and the limiting column 34, and the relative stability of the measuring device and the cover beam 49 in the subsequent measuring process is ensured, and since the positioning block 44 is arranged in the middle of the base 2, the limiting column 34 is arranged in the middle of the base 1, and after the inner cavity of the bottom end of the positioning block 44 is embedded in the limiting column 34 is stably limited, the central point of the measuring device is aligned with the central point of the beam 49;

In a first state, the first bevel gear 5 is meshed with the third bevel gear 53, the driving shaft 4 and the first bevel gear 5 are driven to synchronously rotate by the started motor 6 to drive the third bevel gear 53 to drive the first screw 11 to synchronously rotate, and as the left side and the right side of the first screw 11 are provided with external threads which are opposite in direction and symmetrical, the rotating first screw 11 drives the left and right symmetrical movable seats 14 to synchronously move in a direction deviating from the third bevel gear 53, at the moment, the second movable block 13 at the bottom end of the movable seat 14 moves along the second limiting groove 12 at the corresponding position to limit the movement direction of the movable seat 14, the movement of the movable seat 14 at the left side drives the second vertical plate 17, the positioning frame 18 and the second mounting frame 19 at the left side to synchronously move left, and the movement of the movable seat 14 at the right side drives the first vertical plate 15 and the first mounting frame 16 at the right side to synchronously move right until the tip 20 at the top end of the second mounting frame 19 and the tip 20 at the top end of the first mounting frame 16 respectively meet the left and right sides to correspondingly meet the two left and right sides 50, and the relative positioning of the measuring device 50 is realized; because the output end of the range finder 21 corresponds to the position of the intersection edge 50 on the left side of the capping beam 49, the left side wall of the first vertical plate 15 corresponds to the position of the intersection edge 50 on the right side of the capping beam 49, and therefore the laser is emitted to the left side wall of the first vertical plate 15 by the range finder 21 to realize the measurement of the horizontal length of the bottom edge of the capping beam 49;

The measurement of the horizontal length and the side inclination angle of the bent cap 49 is carried out by placing the distance meter 21 in the positioning frame 18, positioning the position of the distance meter 21 by means of the positioning bolt 22, and promoting the output end of the distance meter 21 and the tip 20 at the top end of the second mounting frame 19 to be positioned on the same vertical line, wherein the distance between the output end of the distance meter 21 and the left side wall of the first vertical plate 15 is the distance between the left tip 20 and the right tip 20, namely the distance between the bottom edge horizontal length of the bent cap 49, and the measurement of the bottom edge horizontal length distance of the bent cap 49 is realized; the first moving block 8 is driven to move to the right side by the opened air cylinder 10 so as to drive the supporting frame 7, the motor 6, the driving shaft 4 and the first bevel gear 5 to move to the right side, drive the first bevel gear 5 to be separated from the outer wall of the third bevel gear 53 and be meshed with the outer wall of the second bevel gear 24, the second state is realized at the moment, the driving shaft 4 and the first bevel gear 5 are driven to rotate by the opened motor 6, the second bevel gear 24 is driven to rotate, the two moving plates 25 symmetrically connected with the left side and the right side of the second bevel gear 24 by threads are synchronously moved to the outside, the rack 27 and the moving bar 29 which are correspondingly positioned are driven to synchronously move outwards so as to drive the left incomplete gear 31 and the right incomplete gear 31 to rotate outwards, when the incomplete gear 31 rotates, the measuring rod 32, the rotating shaft 30, the tip 20 and the pointer at the front side of the protractor 33 are driven to synchronously rotate until the measuring rod 32 is attached to the side edge of the capping beam 49, at the moment, the rotating angle of the pointer at the front side of the protractor 33 relative to the protractor 33 is the rotating angle of the measuring rod 32 relative to the side edge of the capping beam 49, and the rotating angle of the measuring rod 32 is subtracted by 180 degrees by virtue of the angle compensating property of the flat angle, i.e. the angle of the side tilt angle of the capping beam 49, namely, the measurement of the side inclination angle of the cover beam 49 is realized;

In addition, the measuring sequence of the horizontal length and the side inclination angle is not sequential, the first bevel gear 5 is meshed with the second bevel gear 24 to rotate at first, and finally, the rotation of the two measuring rods 32 is realized, namely, the measurement of the side inclination angle of the bent cap 49 is realized at first, and then, the range finder 21 is locked in the positioning frame 18 through the positioning bolt 22 to perform horizontal measurement;

When the horizontal measurement is carried out, the laser emitted by the range finder 21 is not blocked by the arrangement of the through groove 26, so that the laser emitted by the range finder 21 can accurately reach the left side wall of the first vertical plate 15, and the complete measurement of the horizontal length of the bent cap 49 is realized;

After the measuring device is used, the lifting sheet 41 is lifted upwards to enable the connecting pin 40 and the limiting sheet 36 to synchronously move upwards so as to enable the inclined surface 37 to break away from limiting the positioning block 44, and the measuring device is driven to integrally move leftwards, so that the positioning block 44 can be separated from the inner cavity at the bottom end of the limiting column 34, and the measuring device can be separated from the limiting column 34.

According to the invention, the linear measurement of the horizontal length and the side inclination angle of the capping beam 49 can be realized, the measurement of the horizontal length and the side inclination angle is carried out by the same equipment, the equipment is not required to be replaced, the detection requirements in two directions can be met by one-time positioning, the precision of the way of respectively positioning and measuring the capping beam 49 is higher relative to the way of respectively positioning the capping beam in two directions, the positioning error generated in the respective positioning process is avoided, the accuracy of the measurement result of the capping beam 49 can be further ensured, in addition, the positioning block 44 is embedded from left to right to the bottom end of the limiting column 34, the automatic positioning can be realized, the positioned positioning block 44 can ensure the correspondence between the measuring equipment and the center point of the capping beam 49, namely, the automatic alignment and locking limiting of the measuring equipment and the center point of the capping beam 49 are realized, the unnecessary positioning and alignment steps between the measuring equipment and the capping beam 49 are not required to be carried out manually, the measuring time is saved, and the measuring efficiency is improved.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The linear measuring device of the prefabricated bent cap comprises a supporting unit and is characterized by comprising a base (2), wherein two vertical plates (3) are vertically and fixedly arranged on the base (2), the two vertical plates (3) are symmetrically arranged relative to the base (2) left and right, the measuring device further comprises a measuring unit, the measuring unit comprises a first measuring mechanism for measuring the horizontal length and a second measuring mechanism for measuring the inclined angle, and the first measuring mechanism and the second measuring mechanism are driven by the same driving mechanism;

The driving mechanism comprises a driving shaft (4), a first bevel gear (5) is fixedly arranged on the driving shaft (4), a motor (6) is connected to the right end of the driving shaft (4), the output end of the motor (6) is connected with the right end of the driving shaft (4), a supporting frame (7) is arranged at the bottom end of the motor (6), a first moving block (8) is fixedly arranged at the bottom end of the supporting frame (7), a first limiting groove (9) is formed in the base (2), the first moving block (8) is slidably embedded in the first limiting groove (9), a cylinder (10) is arranged on the base (2), and the output end of the cylinder (10) is connected with the right side wall of the first moving block (8).

Wherein the driving shaft (4) penetrates through the outer walls of the two vertical plates (3) in a sliding manner along the horizontal direction;

the first measuring mechanism comprises a first screw rod (11) which is rotationally connected to the vertical plate (3) along the horizontal direction, and external threads which are opposite in direction and symmetrical are arranged on the left side and the right side of the first screw rod (11);

Two movable seats (14) are respectively symmetrically sleeved on the left side and the right side of the first screw (11);

The first screw (11) is fixedly provided with a third bevel gear (53), and in a first state, the third bevel gear (53) is meshed with the left side wall of the first bevel gear (5);

The first measuring mechanism further comprises a first vertical plate (15) fixedly and vertically arranged on the right side above the movable seat (14), a first mounting frame (16) is fixedly arranged at the top end of the first vertical plate (15), a second vertical plate (17) is fixedly and vertically arranged on the left side above the movable seat (14), a positioning frame (18) is arranged at the top end of the second vertical plate (17), a second mounting frame (19) is arranged at the top end of the positioning frame (18), and tips (20) are respectively arranged above the second mounting frame (19) and the first mounting frame (16);

Wherein the left side wall of the first vertical plate (15) and the tip (20) at the top end of the first mounting frame (16) are positioned on the same vertical line;

a distance meter (21) is arranged in the positioning frame (18);

wherein the output end of the range finder (21) and the tip (20) at the top end of the second mounting frame (19) are positioned on the same vertical line;

The second measuring mechanism comprises a second screw rod (23) which is rotationally connected to the vertical plate (3) along the horizontal direction, external threads which are opposite in direction and symmetrical are arranged on the left side and the right side of the second screw rod (23), two moving plates (25) are respectively sleeved with threads which are symmetrical on the left side and the right side of the second screw rod (23), through grooves (26) are formed in each moving plate (25) from left to right, racks (27) are fixedly arranged on each moving plate (25), the racks (27) on the left side are embedded in the second mounting frame (19) in a sliding mode along the horizontal direction, and the racks (27) on the right side are embedded in the first mounting frame (16) in a sliding mode along the horizontal direction;

The second bevel gear (24) is fixedly arranged on the second screw (23), and in a second state, the second bevel gear (24) is meshed and connected with the right side wall of the first bevel gear (5);

The second measuring mechanism further comprises rotating shafts (30) which are respectively connected to the top ends of the second mounting frames (19) and the first mounting frames (16) in a rotating mode, incomplete gears (31) and measuring rods (32) are fixedly mounted on the rotating shafts (30), the incomplete gears (31) are meshed with the racks (27), angle gauges (33) are respectively mounted on the front side walls of the second mounting frames (19) and the first mounting frames (16), pointers are mounted at the front ends of the rotating shafts (30), and the pointers at the front ends of the rotating shafts (30) and the measuring rods (32) are all rotated in the circle centers of the angle gauges (33).

2. The prefabricated bent cap linearity measuring device according to claim 1, wherein two second limiting grooves (12) are symmetrically formed in the left side and the right side of the upper surface of the base (2), a second moving block (13) is embedded in each second limiting groove (12) in a sliding mode, and the moving seat (14) is fixedly connected with the second moving block (13) in a corresponding position.

3. The device for linear measurement of prefabricated bent cap of claim 2, wherein a positioning bolt (22) is arranged at the top end of the positioning frame (18) in a threaded manner, the bottom end of the positioning bolt (22) penetrates through the positioning frame (18) in a downward threaded manner and extends into the positioning frame (18), and the bottom end of the positioning bolt (22) is attached to the upper surface of the range finder (21).

4. The device for linear measurement of prefabricated bent cap of claim 3, wherein the second mounting frame (19) and the first mounting frame (16) are respectively provided with a limiting seat (28) at the bottom ends of the inner walls, the bottom ends of the two racks (27) are respectively fixedly provided with a movable strip (29), and each movable strip (29) is slidably embedded in the corresponding limiting seat (28).

5. The prefabricated bent cap linearity measurement device of claim 1, wherein the support unit comprises a rack (1), a limit column (34) is vertically arranged in the middle of the front side of the rack (1), and a self-locking mechanism connected with the base (2) is arranged at the bottom end of the limit column (34);

The self-locking mechanism comprises a yielding groove (35) formed in the bottom end of the left side wall of the limiting column (34), a limiting plate (36) is arranged above the yielding groove (35) in a lifting and moving mode, the limiting plate (36) is slidably arranged on the limiting column (34), an inclined surface (37) is arranged on the left side of the bottom end of the limiting plate (36), the inclined surface (37) is obliquely arranged from left to right in a descending trend, a spring (38) is arranged below the limiting plate (36), the bottom end of the spring (38) is connected with the surface of the limiting column (34), a telescopic rod (39) is arranged in the spring (38), two ends of the telescopic rod (39) are respectively connected with the limiting plate (36) and the limiting column (34), a positioning block (44) is fixedly arranged in the middle of the front side wall of the base (2), and the positioning block (44) is embedded in the inner cavity of the bottom end of the limiting column (34);

The lifting assembly is arranged on the limiting piece (36), the lifting assembly comprises a connecting pin (40) fixedly arranged on the limiting piece (36), a lifting piece (41) is fixedly arranged at the top end of the connecting pin (40), and a groove (42) is formed in the bottom end of the lifting piece (41).

6. The prefabricated bent cap linearity measurement device of claim 5, wherein the support unit further comprises a plurality of connecting columns (43) vertically arranged at the bottom end of the rack (1), a bottom frame (54) is fixedly arranged at the bottom end of the connecting columns (43), a bottom plate (45) is fixedly arranged at the rear side of the bottom frame (54), a connecting plate (46) is fixedly arranged between the bottom plate (45) and the rack (1), a balancing weight (48) is arranged between the connecting plate (46) and the bottom plate (45), and the balancing weight (48) is arranged on the bottom plate (45);

A cover beam (49) is placed in the rack (1), an intersection edge (50) is arranged at the intersection of the bottom edge and the side edge of the cover beam (49), a lifting hook (51) is arranged at the top end of the intersection edge (50), and a lifting rope (52) is hooked at the top end of the lifting hook (51).

7. A measuring method of a prefabricated bent cap linear measuring device, comprising the prefabricated bent cap linear measuring device according to any one of claims 1 to 6, characterized by comprising the steps of:

s1, placing and positioning a cover beam (49), and ensuring that the cover beam (49) is stably and flatly placed in a rack (1);

s2, positioning a measuring device on the front side of the cover beam (49), and ensuring that the center of the measuring device is collinear with the center of the cover beam (49);

s3, adjusting two tips (20) at the left side and the right side to respectively correspond to two intersection edges (50);

s4, adjusting the measuring device to be in a first state, and measuring the horizontal length of the bottom edge of the bent cap (49);

Adjusting the measuring device to a second state, and measuring the inclination angle of the side plate of the cover beam (49);

the first state and the second state are adjusted according to the requirement, and the sequence is not sequential;

And S5, after the measurement is finished, separating the measuring device from the limiting column (34) to finish the measurement.