CN111997102B - Screw pile composite foundation bearing capacity detection device - Google Patents

Abstract

The invention relates to a device for detecting the bearing capacity of a screw pile composite foundation, which is applied to the field of detection of the bearing capacity of the foundation, and the technical scheme has the key points that: contain the link, be equipped with the flat board on the link, the connecting hole has been seted up on the flat board, wear to be equipped with the guide bar in the connecting hole, be equipped with hammer seat and smooth hammer on the guide bar respectively, be equipped with the locating plate on the outer fringe of hammer seat, the one end that the hammer seat was kept away from to the locating plate is equipped with the laser pointer ware, the ring channel has been seted up on the hammer seat, the ring channel distributes in the outer fringe and the width of smooth hammer and the light beam phase-match of laser pointer ware along the horizontal direction, the light beam that the laser pointer ware jetted out shines in the ring channel. The invention has the technical effects that: the possibility of inconsistent drop distances of the sliding hammer during multiple times of hammering is reduced, and the accuracy of the measuring result is improved.

Description

Screw pile composite foundation bearing capacity detection device

Technical Field

The invention relates to the technical field of detection devices, in particular to a device for detecting the bearing capacity of a screw pile composite foundation.

Background

The bearing capacity of the foundation is the capacity of bearing the load of the foundation, and the bearing capacity of the foundation is a practical term which is provided for foundation design and is convenient for evaluating the strength and stability of the foundation. Insufficient foundation bearing capacity will result in the structure sinking, which in turn causes larger scale structural damage. Therefore, detection of the foundation bearing capacity is important in construction of a structure.

Notice No. CN207331782U discloses a building foundation bearing capacity detection device, including the link, first hollow sleeve pipe, the hollow sleeve pipe of second, first telescopic link, the second telescopic link, guide bar and probe rod, the both ends of link avris all through the screw respectively with one side on first hollow sleeve pipe top and one side threaded connection on second hollow sleeve pipe top, the bottom of first hollow sleeve pipe avris and the bottom of second hollow sleeve pipe avris all through adjusting screw respectively with the top of first telescopic link and the top threaded connection of second telescopic link.

The above prior art solutions have the following drawbacks: in the process of measuring the bearing capacity of the foundation, the sliding hammer needs to be lifted to a fixed height above the hammer seat for many times so as to ensure that the drop distances of the sliding hammer during each hammering are consistent; above-mentioned detection device relies on the manual work to carry out the lifting to the sliding hammer in the testing process, appears easily that the condition that the sliding hammer is hammered many times and is fallen to apart from inconsistent, and measuring result's precision is relatively poor.

Disclosure of Invention

The invention aims to provide a device for detecting the bearing capacity of a screw pile composite foundation, which has the advantages that: the possibility of inconsistent drop distances of the sliding hammer during multiple times of hammering is reduced, and the accuracy of the measuring result is improved.

The technical purpose of the invention is realized by the following technical scheme: contain the link, be equipped with the flat board on the link, the connecting hole has been seted up on the flat board, wear to be equipped with the guide bar in the connecting hole, be equipped with hammer seat and smooth hammer on the guide bar respectively, be equipped with the locating plate on the outer fringe of smooth hammer, the one end that the hammer seat was kept away from to the locating plate is equipped with the laser pointer ware, upward slide the hammer and seted up the ring channel, the ring channel distributes in the outer fringe and the width of smooth hammer and the light beam phase-match of laser pointer ware along the horizontal direction, the light beam that the laser pointer ware jetted out shines in the ring channel.

Through the technical scheme, when the hammer seat moves downwards under the impact of the sliding hammer, the positioning plate on the hammer seat and the laser indicator can synchronously move downwards along with the hammer seat, so that the distance between the laser indicator and the hammer seat is always a fixed value; when the sliding hammer needs to be lifted for multiple times in the detection process, the falling distance of the sliding hammer can be fixed in a mode that a worker can lift the sliding hammer until the light beam of the laser indicator correspondingly irradiates in the annular groove, so that the possibility that the falling distances are inconsistent when the sliding hammer is hammered for multiple times is reduced, and the accuracy of the measurement result is improved.

The invention is further configured to: the connecting frame is also provided with a driving piece used for automatically and repeatedly lifting the sliding hammer to a fixed drop height, the driving piece comprises a control system, a supporting frame and a photosensitive sensor, the photosensitive sensor is embedded in the annular groove and is matched with a light beam emitted by the laser indicator, the supporting frame is fixedly arranged on the connecting frame, a vertical plate is arranged on the end surface of the supporting frame facing the sliding hammer along the vertical direction, a sliding groove is formed in the vertical direction on the vertical plate, a sliding block is connected in the sliding groove in a sliding manner, a fixed pulley is further rotatably connected on the vertical plate, a wire reel is rotatably connected on the supporting frame, a first motor used for driving the wire reel to rotate is further arranged on the supporting frame, a cable is wound on the wire reel, one end of the cable, far away from the wire reel, is wound on the fixed pulley and is fixedly connected on the sliding block, and a rotating rod is rotatably connected on the sliding block along the vertical direction, be equipped with the extension board that the part extends to the slide hammer under on the dwang, still be equipped with on the slider and be used for driving dwang pivoted second motor, photosensitive sensor is used for receiving the light signal and the transmission signal of laser designator and gives control system, control system is used for receiving photosensitive sensor's the signal of telecommunication and sends control signal respectively and gives first motor and second motor.

Through the technical scheme, when the driving part is started, the first motor is controlled to rotate forwards through the control system, when the first motor rotates forwards, the wire spool is driven to rotate to take up wires, the sliding block can drive the extension plate to move upwards along the sliding groove under the drive of the cable, the extension plate can drive the sliding hammer and the photosensitive sensor to move upwards when moving to the sliding hammer, when the photosensitive sensor on the sliding hammer moves to the same height as a light beam emitted by the laser indicator, the laser irradiated on the photosensitive sensor can trigger the photosensitive sensor and send a power signal to the control system, the control system can respectively send a control signal to the first motor and the second motor after receiving an electric signal of the photosensitive sensor, so that the first motor stops rotating, the second motor can start the forward rotation driving rotating rod to drive the extension plate to rotate clockwise by 90 degrees so that the extension plate and the sliding hammer are separated from each other, the sliding hammer without support can drop on the hammer seat under the influence of the gravity of the sliding hammer; then the first motor starts reverse rotation again to lower the sliding block to the initial position, and the second motor starts reverse rotation to restore the extension plate to the initial position; under control system's control, first motor and second motor can periodically start and carry out the lifting operation to the slide hammer to reached and repeated with the automatic lifting of slider to the effect of fixed drop height, need not the manual work and carry out relapse lifting to the slide hammer, use manpower sparingly.

The invention is further configured to: the periphery of the guide rod is provided with a positioning strip along the vertical direction, the inner wall of the sliding hammer is provided with a positioning groove matched with the positioning strip, and the part of the positioning strip is connected in the positioning groove in a sliding manner.

Through above-mentioned technical scheme, the setting that the location strip slided each other with the constant head tank has carries out spacing effect to the slide hammer for the slide hammer is difficult for rotating for the hammer seat along the in-process that the guide bar goes up and down, thereby has reduced the slide hammer and has rotated the in-process that leads to photosensitive sensor to be difficult to receive the possibility that laser designator jetted out the light beam that goes up and down, so that the driving piece can carry out stable lifting to the slide hammer.

The invention is further configured to: the slider rotates respectively on the both sides wall along the horizontal direction and is connected with the gyro wheel, two the gyro wheel is located the spout and contacts with the inner wall of spout respectively.

Through above-mentioned technical scheme, when the slider goes up and down along the spout, two gyro wheels can support tightly at the spout internal rotation under the drive of slider to reduce the frictional force between slider and the spout, reduced slider and spout and blocked each other under the effect of external force and died, lead to the slider to be difficult to continue the possibility of going up and down along the spout.

The invention is further configured to: the locating plate is equipped with the connecting block towards the one end of hammer seat, the connecting block towards set up on the terminal surface of hammer seat with hammer seat assorted arc wall, still wear to establish and threaded connection has two connecting bolt on the connecting block, correspond on the hammer seat and set up two and connecting bolt assorted thread grooves, the hammer seat supports tightly in the arc wall and two connecting bolt difference threaded connection are in two thread grooves.

Through above-mentioned technical scheme, the mode that staff's accessible bolt was dismantled unloads two connecting bolt respectively, then unloads connecting block and locating plate from the hammer seat to the staff can require to change length and its assorted locating plate according to the different fall distances of slide hammer, thereby has promoted the suitability of locating plate to different fall distances requirement slide hammer.

The invention is further configured to: the end face, facing the sliding hammer, of the positioning plate is provided with a clamping groove, the bottom of the clamping groove is provided with a first rubber pad, the laser indicator is erected on the first rubber pad, the end face, far away from the hammer seat, of the positioning plate is provided with a tight supporting bolt in a penetrating mode, a part of the tight supporting bolt extends into the clamping groove, the end portion of the tight supporting bolt is rotatably connected with a tight supporting plate, the end face, away from the tight supporting bolt, of the tight supporting plate is provided with a second rubber pad, and the laser indicator is tightly supported between the first rubber pad and the second rubber pad.

Through the technical scheme, the first rubber pad and the second rubber pad have the functions of shock absorption and energy absorption, so that the possibility of damage to the laser indicator caused by mutual shaking and collision of the positioning plate and the laser indicator under the driving of the hammer seat when the slide hammer impacts the hammer seat is reduced; meanwhile, the worker can rotate the abutting bolt to drive the second rubber pad to be separated from the laser indicator, and then the laser indicator is detached in a mode of taking out the laser indicator from the clamping groove, so that the worker can replace the laser indicator.

The invention is further configured to: the inner wall of the connecting hole is rotatably connected with a plurality of rotating rollers, the outer edges of the rotating rollers are respectively coated with a silica gel pad, the guide rod is located between the rotating rollers, and the periphery of the guide rod is respectively contacted with the silica gel pads.

Through the technical scheme, when the guide rod is tightly propped against the silica gel pad to move downwards, the rotating roller can roll under the driving of the guide rod; the arrangement of the plurality of rotating rollers reduces the friction force between the guide rod and the wall of the connecting hole, and reduces the influence of the friction resistance between the guide rod and the wall of the connecting hole on the impact force of the sliding hammer when the sliding hammer falls, so that the accuracy of the detection device is further improved; meanwhile, the silica gel pad has the effects of shock absorption and energy absorption, so that the situation that the position of the connecting frame deviates due to the fact that the guide rod collides with the rotating roller in the downward moving process is reduced, the guide rod deviates from the vertical direction, and the accuracy of the final detection result is influenced.

The invention is further configured to: the bottom of the connecting frame is provided with a plurality of fixing plates, the end faces, deviating from the connecting frame, of the fixing plates are provided with fixing rods, and the fixing rods are inserted in the foundation.

Through the technical scheme, the fixing rod is inserted into the foundation to play a role in positioning the connecting frame, so that the connecting frame is not prone to shifting under the action of external force, and the stability of the connecting frame in the measuring process is enhanced.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the sliding hammer can be lifted to a fixed drop distance by a worker through the indication of the laser indicator, so that the possibility of inconsistent drop distances of the sliding hammer during multiple hammering is reduced, and the accuracy of a measuring result is improved;

2. the driving piece can repeatedly and automatically lift the sliding hammer to a fixed drop distance height, so that workers do not need to manually lift the sliding hammer repeatedly, and labor is saved;

3. the setting that the change can be dismantled to the locating plate makes this locating plate can match with the slide hammer that different fall apart from requirements, has promoted this detection device's suitability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural diagram for embodying the rotating roller in the present embodiment.

Fig. 3 is a schematic structural diagram of the present embodiment for embodying the photosensor.

Fig. 4 is a schematic diagram of a framework for embodying the operating logic of the driving member in the present embodiment.

FIG. 5 is a schematic structural diagram of the driving member of the present embodiment

Fig. 6 is a schematic cross-sectional view of the roller according to the present embodiment.

Fig. 7 is a schematic structural diagram of a positioning groove in the present embodiment.

Fig. 8 is an exploded view of the present embodiment for embodying the thread groove.

Fig. 9 is a schematic structural diagram of the present embodiment for embodying the abutting plate.

Reference numerals: 1. a connecting frame; 2. a flat plate; 3. connecting holes; 4. a guide bar; 5. a hammer base; 6. a slide hammer; 7. positioning a plate; 8. a laser pointer; 9. an annular groove; 10. a drive member; 11. a control system; 12. a support frame; 13. a photosensitive sensor; 14. a vertical plate; 15. a chute; 16. a slider; 17. a fixed pulley; 18. a wire spool; 19. a first motor; 20. a cable; 21. rotating the rod; 22. an extension plate; 23. a second motor; 24. a positioning bar; 25. positioning a groove; 26. a roller; 27. connecting blocks; 28. an arc-shaped slot; 29. a connecting bolt; 30. a thread groove; 31. a card slot; 32. a first rubber pad; 33. tightly abutting against the bolt; 34. a propping plate; 35. a second rubber pad; 36. a rotating roller; 37. a silica gel pad; 38. a fixing plate; 39. fixing the rod; 40. a driven gear; 41. a driving gear; 42. a first switch; 43. a second switch.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): the utility model provides a screw pile composite foundation bearing capacity detection device, as shown in fig. 1 and fig. 2, contain and erect link 1 on the ground, link 1 upper end is equipped with dull and stereotyped 2, dull and stereotyped 2 sets up along the horizontal direction, connecting hole 3 has been seted up along vertical direction in dull and stereotyped 2 center department, evenly rotate on the pore wall of connecting hole 3 and be connected with three live-rollers 36, it has annular silica gel pad 37 to bond the cladding respectively on the outer peripheral edges of three live-rollers 36, still wear to be equipped with guide bar 4 along vertical direction in the connecting hole 3, the outer peripheral edges of guide bar 4 simultaneously with the silica gel pad 37 on three live-rollers 36 mutual contact, still be equipped with cylinder type hammer carrier 5 on the guide bar 4, the cover is equipped with cylinder type smooth hammer 6 on the guide bar 4 between hammer carrier 5 and dull and stereotyped 2, the diameter of smooth hammer 6 is greater than the diameter of hammer carrier 5. Therefore, the guide rod 4 deviating from the vertical direction in the measuring process can be tightly abutted to the rotating roller 36 deviating from the side, and in the process that the guide rod 4 moves downwards, the rotating roller 36 tightly abutted to the guide rod 4 can be driven by the guide rod 4 to rotate, so that the interference of the friction resistance between the guide rod 4 and the connecting hole 3 on the measuring result is reduced, and the accuracy of the measuring result is improved.

As shown in fig. 1, the bottom of the connecting frame 1 is hinged with four fixing plates 38, the four fixing plates 38 are horizontally arranged, and a fixing rod 39 is vertically and fixedly arranged on an end surface of the four fixing plates 38 away from the connecting frame 1, and one end of the fixing rod 39 away from the fixing plates 38 is conical. Therefore, the staff accessible is fixed link 1 with the mode that four dead levers 39 inserted in the ground respectively, and the setting of dead lever 39 has reduced link 1 and has leaded to guide bar 4 to follow vertical direction skew under link 1's drive at the skew in-process of measuring, influences the possibility of final testing result precision.

As shown in fig. 1 and 3, an L-shaped positioning plate 7 is connected to the outer edge of the hammer base 5, one end of the positioning plate 7, which is far away from the hammer base 5, extends to the upper side of the slide hammer 6 and is connected with a laser pointer 8 along the horizontal direction, a first switch 42 for controlling the working state of the laser pointer 8 is arranged on the laser pointer 8, when the first switch 42 is turned on, a light beam is emitted by the laser pointer 8 and points to the central axis of the guide rod 4, and the first switch 42 is in an on state during the measurement process; an annular groove 9 is further formed in the upper edge of the sliding hammer 6 along the periphery, the annular groove 9 is integrally arranged in the horizontal direction, and the width of the annular groove 9 is the same as the diameter of a light beam emitted by the laser indicator 8; when the laser pointer 8 emits a light beam in the annular groove 9 along the horizontal direction, the distance between the slide hammer 6 and the hammer seat 5 is consistent with the requirement of the drop distance of the slide hammer 6.

As shown in fig. 1 and 4, a driving member 10 for automatically and repeatedly lifting the sliding weight 6 to a fixed drop height and a second switch 43 for controlling the start and stop of the driving member 10 are further respectively arranged on the connecting frame 1, the driving member 10 is configured to include a control system 11, a supporting frame 12 fixedly connected to the connecting frame 1 along a horizontal direction, and a photosensitive sensor 13 embedded in the annular groove 9, the photosensitive sensor 13 is configured to: when the light beam emitted by the laser pointer 8 correspondingly irradiates the photosensitive sensor 13, the photosensitive sensor 13 is triggered and sends an electric signal to the control system 11.

As shown in fig. 5 and 6, a vertical plate 14 is fixedly connected to an end surface of the support frame 12 facing the sliding hammer 6 (see fig. 1) along a vertical direction, a T-shaped sliding groove 15 is formed in the end surface of the vertical plate 14 facing away from the support frame 12 along the vertical direction, an i-shaped sliding block 16 is connected to the sliding groove 15 in a sliding manner, the sliding block 16 and the sliding groove 15 are matched with each other and partially extend out of the sliding groove 15, two side walls of one end, located in the sliding groove 15, of the sliding block 16 along a horizontal direction are respectively and rotatably connected with a roller 26, and the rollers 26 are arranged so that the sliding block 16 is not easily mutually locked with the sliding groove 15 under the action of external force, thereby improving the smoothness of the sliding block 16 sliding along the sliding groove 15; the supporting frame 12 is further rotatably connected with a wire spool 18, a cable 20 is wound on the wire spool 18, the upper end face of the vertical plate 14 is rotatably connected with a fixed pulley 17, the cable 20 is tightly wound on the fixed pulley 17 and is fixedly connected to the upper end face of the sliding block 16, one end, far away from the wire spool 18, of the cable 20 is tightly wound on the fixed pulley 17, the supporting frame 12 is further provided with a first motor 19 used for driving the wire spool 18 to rotate, and the running state of the first motor 19 is controlled by the control system 11 (refer to fig. 4). Therefore, the first motor 19 drives the wire spool 18 to rotate for taking up or paying off, so that the slider 16 is driven by the cable 20 to lift.

As shown in fig. 1 and 5, the slider 16 is provided with a rotating rod 21 penetrating and rotatably connected along the vertical direction, one end of the rotating rod 21 below the slider 16 is fixedly provided with an extending plate 22 partially extending out of the slider 16 along the horizontal direction, and the length of the extending plate 22 is set as: when the extension plate 22 is driven by the rotating rod 21 to rotate until the extension line is intersected with the central axis of the guide rod 4, the extension plate 22 partially extends to the position right below the sliding hammer 6, and the horizontal distance between the end face, away from the rotating rod 21, of the extension plate 22 and the outer edge of the guide rod 4 is larger than the horizontal distance between the outer edge of the hammer seat 5 and the outer edge of the guide rod 4; a driven gear 40 is fixedly sleeved at one end of the rotating rod 21 above the sliding block 16, a second motor 23 is also fixedly connected to the sliding block 16, the operating state of the second motor 23 is also controlled by the control system 11 (refer to fig. 4), and a driving gear 41 which is meshed with the driven gear 40 is fixedly sleeved at the output end of the second motor 23. Therefore, when the second motor 23 is started, the driving gear 41 and the driven gear 40 engaged with the driving gear 41 are driven to rotate, and the rotating rod 21 is driven by the driven gear 40 to rotate, so that the extending plate 22 is driven to rotate around the rotating rod 21.

As shown in fig. 1 and 5, the positions of the extension plate 22 in the initial state are set as: the extension plate 22 is positioned below the hammer seat 5, the extension line of the extension plate 22 is intersected with the central axis of the guide rod 4, and the vertical distance between the extension plate and the hammer seat 5 is 50 cm; when the second switch 43 is turned on to activate the driving member 10, under the control of the control system 11 (see fig. 4), the first motor 19 activates the driving slider 16 to drive the extension plate 22 to ascend along the sliding slot 15, and the extension plate 22 drives the sliding weight 6 to ascend along the guiding rod 4 when moving to the sliding weight 6.

As shown in fig. 1 and 4, when the slide hammer 6 is driven by the extension plate 22 to rise to a fixed drop height, the light sensor 13 on the slide hammer 6 and the light beam emitted by the laser pointer 8 are aligned with each other, so that the light sensor 13 triggers and sends an electrical signal to the control system 11, and the control system 11 sends control signals to the first motor 19 and the second motor 23 respectively while receiving the electrical signal of the light sensor 13.

As shown in fig. 1 and 5, the first motor 19 stops after receiving the control signal, the second motor 23 starts to drive the extension plate 22 to rotate clockwise by 90 degrees after receiving the control signal, so that the extension plate 22 and the slide hammer 6 are separated from each other, the slide hammer 6 without support falls to the hammer seat 5 from the fixed drop height, and then the first motor 19 and the second motor 23 restore the extension plate 22 to the initial position under the control of the control system 11 (refer to fig. 4), and the driving member 10 starts automatically again; thereby achieving the effect of automatically and repeatedly lifting the sliding hammer 6 to the fixed drop height.

As shown in fig. 1 and 4, under the indication of the laser indicator 8, the driving member 10 can automatically and repeatedly lift the slide hammer 6 to the fixed drop distance height without manually and repeatedly lifting the slide hammer 6, so that the possibility of inconsistent drop distances of the slide hammer 6 during multiple hammering operations is reduced while manpower is saved, and the accuracy of the measurement result is improved.

As shown in fig. 3 and 7, the length has set firmly the location strip 24 that is 50cm along vertical direction on the periphery of guide bar 4, and the lower extreme of location strip 24 extends to the up end of hammer block 5, has seted up width and location strip 24 assorted constant head tank 25 along vertical direction on the inner wall of slide hammer 6, and slide hammer 6 is extended respectively to the both ends of constant head tank 25 along vertical direction, and the connection of location strip 24 part slides in constant head tank 25, and the position of constant head tank 25 is set up to: when the slide hammer 6 slides to a fixed falling distance height along the positioning groove 25, the photosensitive sensor 13 on the slide hammer 6 corresponds to the light beam emitted by the laser pointer 8; the positioning strip 24 and the positioning groove 25 reduce the possibility of rotation of the slide hammer 6 during lifting, so that the photosensitive sensor 13 can stably receive the light beam emitted by the laser pointer 8 and be triggered when the slide hammer 6 is lifted to a fixed landing height.

As shown in fig. 7 and 8, locating plate 7 has set firmly connecting block 27 towards the one end of hammer carrier 5, connecting block 27 deviates from on the terminal surface of locating plate 7 offer with hammer carrier 5 outer fringe assorted arc wall 28, two thread grooves 30 have been seted up on the outer fringe of hammer carrier 5, correspond on connecting block 27 wear to establish and threaded connection have two with thread groove 30 assorted connecting bolt 29, the mode and the 5 interconnect bolted connection of hammer carrier of bolted connection in two thread grooves 30 respectively through two connecting bolt 29, connecting block 27's width is set up to: when the connecting block 27 is bolted to the hammer base 5, the upper end face of the connecting block 27 is flush with the upper end face of the hammer base 5. Therefore, when the drop distance of the sliding hammer 6 needs to be adjusted, a worker can detach the positioning plate 7 and the connecting block 27 from the hammer seat 5 in a bolt detaching mode, and then replace the positioning plate 7 with the corresponding length according to different drop distances of the sliding hammer 6, so that the applicability of the positioning plate 7 to the sliding hammer 6 with different drop distances is improved.

As shown in fig. 9, a clamping groove 31 is further formed in an end surface of the positioning plate 7 facing the hammer seat 5, a first rubber pad 32 is bonded on a bottom surface of the clamping groove 31, a tightening bolt 33 is further vertically penetrated and connected with the upper end surface of the positioning plate 7 in a threaded manner, an end portion of the tightening bolt 33 extends into the clamping groove 31, a tightening plate 34 matched with the width of the clamping groove 31 is rotatably connected to an end portion of the tightening bolt 33 located in the clamping groove 31, a second rubber pad 35 is bonded on an end surface of the tightening plate 34 facing away from the tightening bolt 33, the laser pointer 8 is detachably connected with the positioning plate 7 in a manner that the laser pointer is tightly pressed between the first rubber pad 32 and the second rubber pad 35 and partially extends out of the clamping groove 31, and at this time, the first switch 42 is located outside the clamping groove 31 so that a worker can perform switching operation on the laser pointer 8; meanwhile, the positioning plate 7 and the laser indicator 8 are detachably connected, so that a worker can regularly detach and replace the laser indicator 8, and the possibility that the laser indicator 8 is difficult to continue to work normally after being powered off after being used for a long time is reduced.

The implementation principle of the embodiment is as follows: when the slide hammer 6 needs to be repeatedly lifted in the measurement process, a worker can firstly replace the positioning plate 7 matched with the slide hammer 6 according to the requirement of the drop distance of the slide hammer 6, then the laser indicator 8 is turned on through the first switch 42 to emit a light beam, the driving piece 10 is started through the second switch 43 to enable the control system 11 to drive the first motor 19 to rotate, the slide block 16 is lifted upwards under the driving of the cable 20, when the slide block 16 is lifted to the slide hammer 6, the extension plate 22 on the slide block 16 can drive the slide hammer 6 to move upwards together, when the slide hammer 6 is lifted to a fixed drop height by the extension plate 22, the photosensitive sensor 13 can be triggered by the light beam emitted by the laser indicator 8 and feed back an electric signal to the control system 11, the control system 11 can control the first motor 19 to stop and enable the second motor 23 to start and drive the second motor 23 to rotate clockwise by 90 degrees so that the rotating rod 21 can freely fall down, thereby completing one lifting operation; then the first motor 19 will drive the sliding block 16 to slide to the initial position under the control of the control system 11, the second motor 23 will drive the extension plate 22 to rotate to the initial position under the control of the control system 11, and the driving member 10 will automatically start again after the extension plate 22 recovers; thereby reached the automatic effect of repeatedly promoting slide hammer 6 to fixed drop height department, still reduced the inconsistent possibility of drop when 6 multiple hammering of slide hammer when using manpower sparingly, improved measuring result's precision.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (7)

1. The utility model provides a screw pile composite foundation bearing capacity detection device, contains link (1), be equipped with dull and stereotyped (2) on link (1), connecting hole (3) have been seted up on dull and stereotyped (2), wear to be equipped with guide bar (4) in connecting hole (3), be equipped with hammer holder (5) and smooth hammer (6) on guide bar (4) respectively, its characterized in that: a positioning plate (7) is arranged on the outer edge of the hammer seat (5), a laser indicator (8) is arranged at one end, far away from the hammer seat (5), of the positioning plate (7), an annular groove (9) is formed in the sliding hammer (6), the annular groove (9) is distributed on the outer edge of the sliding hammer (6) in the horizontal direction, the width of the annular groove is matched with that of a light beam of the laser indicator (8), and the light beam emitted by the laser indicator (8) irradiates in the annular groove (9);

the automatic lifting device is characterized in that a driving piece (10) used for automatically and repeatedly lifting the sliding hammer (6) to a fixed drop distance height is further arranged on the connecting frame (1), the driving piece (10) comprises a control system (11), a supporting frame (12) and a photosensitive sensor (13), the photosensitive sensor (13) is embedded in the annular groove (9) and is matched with a light beam emitted by the laser indicator (8), the supporting frame (12) is fixedly arranged on the connecting frame (1), a vertical plate (14) is arranged on the end face, facing the sliding hammer (6), of the supporting frame (12) in the vertical direction, a sliding groove (15) is formed in the vertical plate (14) in the vertical direction, a sliding block (16) matched with the sliding groove (15) is connected in the sliding groove (15) in a sliding mode, a fixed pulley (17) is further rotatably connected on the vertical plate (14), and a wire winding disc (18) is rotatably connected on the supporting frame (12), the supporting frame (12) is also provided with a first motor (19) for driving the wire spool (18) to rotate, a cable (20) is wound on the wire spool (18), one end of the cable (20) far away from the wire spool (18) is wound on a fixed pulley (17) and is fixedly connected to the sliding block (16), a rotating rod (21) is rotatably connected on the sliding block (16) along the vertical direction, an extension plate (22) partially extending to the position right below the sliding hammer (6) is arranged on the rotating rod (21), the slide block (16) is also provided with a second motor (23) for driving the rotating rod (21) to rotate, the photosensitive sensor (13) is used for receiving the light signal of the laser indicator (8) and sending an electric signal to the control system (11), the control system (11) is used for receiving the electric signals of the photosensitive sensor (13) and respectively sending control signals to the first motor (19) and the second motor (23).

2. The screw pile composite foundation bearing capacity detection device according to claim 1, characterized in that: be equipped with location strip (24) along vertical direction on the periphery of guide bar (4), seted up on the inner wall of slide hammer (6) with location strip (24) assorted constant head tank (25), location strip (24) part is slided and is connected in constant head tank (25).

3. The screw pile composite foundation bearing capacity detection device according to claim 1, characterized in that: the slider (16) is connected with gyro wheel (26) along the both sides wall of horizontal direction on rotating respectively, two gyro wheel (26) are located spout (15) and contact each other with the inner wall of spout (15).

4. The screw pile composite foundation bearing capacity detection device according to claim 1, characterized in that: locating plate (7) are equipped with connecting block (27) towards the one end of hammer block (5), connecting block (27) are seted up on the terminal surface of hammer block (5) with hammer block (5) assorted arc wall (28), still wear to establish and threaded connection has two connecting bolt (29) on connecting block (27), correspond on hammer block (5) and seted up two and connecting bolt (29) assorted thread groove (30), hammer block (5) support tightly in arc wall (28) and two connecting bolt (29) respectively threaded connection in two thread groove (30).

5. The screw pile composite foundation bearing capacity detection device according to claim 1, characterized in that: the end face, facing the sliding hammer (6), of the positioning plate (7) is provided with a clamping groove (31), the bottom of the clamping groove (31) is provided with a first rubber pad (32), the laser indicator (8) is erected on the first rubber pad (32), the end face, far away from the hammer seat (5), of the positioning plate (7) is provided with a tightening bolt (33) in the clamping groove (31) in a penetrating mode and in threaded connection with a part, the end portion of the tightening bolt (33) is rotatably connected with a tightening plate (34), the end face, far away from the tightening bolt (33), of the tightening plate (34) is provided with a second rubber pad (35), and the laser indicator (8) is tightly tightened between the first rubber pad (32) and the second rubber pad (35).

6. The screw pile composite foundation bearing capacity detection device according to claim 1, characterized in that: the inner wall of the connecting hole (3) is rotatably connected with a plurality of rotating rollers (36), the outer edges of the rotating rollers (36) are respectively coated with silica gel pads (37), and the guide rod (4) is located between the rotating rollers (36) and the periphery of the guide rod is respectively contacted with the silica gel pads (37).

7. The screw pile composite foundation bearing capacity detection device according to claim 1, characterized in that: the bottom of the connecting frame (1) is provided with a plurality of fixing plates (38), the end faces, deviating from the connecting frame (1), of the fixing plates (38) are provided with fixing rods (39), and the fixing rods (39) are inserted into the foundation.

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