CN217878670U

CN217878670U - Anti-drawing force detection device for expansion screw

Info

Publication number: CN217878670U
Application number: CN202221745526.9U
Authority: CN
Inventors: 翁继武; 廖裕抄; 陈健
Original assignee: Dongguan Shenggute Hardware Products Co ltd
Current assignee: Dongguan Shenggute Hardware Products Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-11-22
Anticipated expiration: 2032-07-06

Abstract

The utility model discloses an expansion screw drawing resistance detection device, which consists of an outer shell, a transmission device and a clamping device, wherein the transmission device and the clamping device are arranged in the outer shell; the transmission device includes: the driving rotating shaft is rotatably connected to the inner cavity of the outer shell; the driven rotating shaft is rotatably connected to the inner cavity of the outer shell and is close to the driving rotating shaft; the first gear is sleeved on the driving rotating shaft; the second gear is sleeved on the driven rotating shaft and meshed with the first gear; the clamping device includes: the moving block is connected with the driven rotating shaft in a sliding manner; and the L-shaped frame is fixedly connected to the moving block. When clamping, the driving rotating shaft rotates to drive the driven rotating shaft to rotate; the two clamping devices move towards the opposite direction and abut against the expansion screw to realize clamping, and then the expansion screw is subjected to drawing test through the drawing instrument. The utility model discloses the installation steps are simple, can be more stable, dismouting tensile detection device fast, and then improved the speed of detection device dismouting.

Description

Anti-drawing force detection device for expansion screw

Technical Field

The utility model relates to an anti drawing force of inflation screw detects technical field, especially relates to an anti drawing force detection device of inflation screw.

Background

The expansion screw is generally a metal expansion screw, and the expansion screw is fixed by utilizing the wedge-shaped slope to promote expansion to generate friction bond force so as to achieve the fixing effect. One end of the screw is provided with threads, and the other end of the screw is provided with conicity. The steel pipe is covered with an iron sheet (some steel pipes), a plurality of notches are arranged on one half of an iron sheet cylinder (steel pipe), the iron sheet cylinder (steel pipe) and the steel pipe are plugged into a hole drilled in a wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the iron sheet cylinder, and the iron sheet cylinder is expanded and then is tightly fixed on the wall, so that the steel pipe is generally used for fastening protective guards, awnings, air conditioners and the like on materials such as cement, bricks and the like. The drawing resistance refers to the resultant force of the deformation resistance of the metal and the friction force between the metal and the die wall in the drawing process. In order to enable the pulling resistance bearing capacity of the expansion screw to meet the design requirement and avoid potential safety hazards, the pulling resistance detection of the expansion screw is required on a construction site.

The utility model discloses a current utility model with publication number CN209198216U discloses an anti drawing power detection device of inflation screw, including the rectangle frame, the through-hole is seted up at the top of rectangle frame, fixed mounting nut in the through-hole, nut threaded connection lead screw, the bottom of lead screw is rotated and is connected first rectangular plate and second rectangular plate, the bottom of lead screw is rotated and is connected the cylinder piece, the cylinder piece is rotated and is connected first rectangular plate and second rectangular plate, the first spring of fixed mounting in the first rectangular plate, the other end fixed connection second rectangular plate of first spring, the first arc of the inboard fixed mounting of first rectangular plate, first arc sliding connection second arc, the outside fixed mounting spring beam of first rectangular plate, the tip of spring beam rotates connects the pin, the bottom fixed connection second spring of pin, the other end fixed connection spring beam of second spring. The device can conveniently detect the pulling force of inflation silk.

However, in the above-mentioned anti-drawing force detection device, springs are used in many structures, and the springs belong to a consumable part. In the repeated use process of the anti-pulling force detection device, the spring has the failure problems of fatigue fracture, plastic deformation and the like, and the clamping is loosened. In case above-mentioned circumstances appears, need again to oppose drawing force detection device at the job site and maintain the change spring to can not more stably, dismouting inflation screw fast carry out the tensile and detect, and then reduced the speed of detection device dismouting.

In order to solve the problems, the expansion screw drawing resistance detection device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti drawing force detection device of inflation screw to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an expansion screw drawing resistance detection device comprises an outer shell, a transmission device and a clamping device, wherein the transmission device and the clamping device are arranged in the outer shell; the transmission device includes: the driving rotating shaft is rotatably connected to the inner cavity of the outer shell; the driven rotating shaft is rotatably connected to the inner cavity of the outer shell and is close to the driving rotating shaft; the first gear is sleeved on the driving rotating shaft; the second gear is sleeved on the driven rotating shaft and is meshed with the first gear; the clamping device comprises: the moving block is connected with the driven rotating shaft in a sliding manner; and the L-shaped frame is fixedly connected to the moving block.

Preferably, the bottom end of the outer shell is provided with a groove and two sliding holes, the groove can accommodate expansion screws and nuts, and the groove is located between the two sliding holes.

Preferably, the right end of the driving rotating shaft penetrates through the right side of the outer shell, a handle is arranged at the right end of the driving rotating shaft, and the diameter of the handle is larger than that of the driving rotating shaft.

Preferably, the top of the outer shell is provided with two braking devices which are positioned at two sides of the drawing instrument; the braking device includes: the protective cover is fixedly connected to the top of the outer shell and positioned inside the protective cover; a driving part mounted on the shield; one side of the transverse plate is fixedly connected with the output end of the driving part; one end of the vertical rod is fixedly connected to the other side of the transverse plate, and the other end of the vertical rod is connected to the top of the outer shell in a sliding manner; the toothed plate is fixedly connected to the vertical rod; and the brake gear is sleeved on the driving rotating shaft and can be separately meshed with the toothed plate.

Preferably, the first gear has a larger diameter than the second gear.

Preferably, two sections of threads are arranged on the driven rotating shaft, and the thread directions of the two sections of threads are opposite.

Preferably, the number of the clamping devices is two, and each moving block is in threaded connection with a section of thread.

Preferably, the two L-shaped frames are symmetrically arranged on two sides of the groove respectively, and the two L-shaped frames move towards the opposite direction or the opposite direction and can clamp the expansion screws; the L-shaped frame comprises: one side of the vertical plate is fixedly connected with the moving block, the other side of the vertical plate penetrates through the sliding hole, and the vertical plate is connected with the sliding hole in a sliding mode; horizontal pole, fixed connection is located the shell body bottom outside in riser opposite side.

Preferably, the cross bar is provided with a clamping plate.

Preferably, one side of the clamping plate, which is contacted with the expansion screw, is provided with an arc-shaped bend.

Compared with the prior art, the utility model following advantage and beneficial effect have:

1. adopt the utility model discloses a transmission, when the initiative pivot rotated, the suit rotated under the drive of initiative pivot the epaxial first gear of initiative pivot rotatory together. The first gear and the second gear sleeved on the driven rotating shaft are meshed and connected with each other, so that the driven rotating shaft is driven to rotate; the left-handed external thread and the right-handed external thread are arranged on the driven rotating shaft, the clamping device is provided with the matched thread moving blocks, when the external threads rotate, the two moving blocks respectively drive the two L-shaped frames to move oppositely until the arc-shaped face clamping plate on the L-shaped frames abuts against and is held on the expansion screw body, and the expansion screw body is clamped. Because above-mentioned structure adopts connected mode mostly gear connection, threaded connection, makes its stable, dismouting inflation screw fast and carries out tensile detection.

2. Adopt the utility model discloses a arresting gear, after the expansion screw is gripped, the vertical downstream of drive unit drive pinion rack, pinion rack and suit become the meshing linkage position by original separation position at the epaxial braking gear position relation of initiative pivot, and the rethread draws the appearance and draws the test to the expansion screw, just can further guarantee that the pivot is spacing fixed initiatively, prevents that the arc grip block is not hard up to further realize stable and good dismouting expansion screw and carry out the tensile and detect.

Drawings

Fig. 1 is a schematic front sectional view of an expansion screw pulling resistance detection device according to the present invention;

fig. 2 is an enlarged schematic structural view of a brake unit at a in fig. 1 according to the present invention;

fig. 3 is a sequence diagram of actions of the expansion screw anti-pulling force detection device in the clamping position according to the present invention;

fig. 4 is a sequence diagram of the actions of the expansion screw pulling-resisting force detection device in the open position according to the present invention;

in the figure: the automatic drawing device comprises an outer shell 1, a driving rotating shaft 2, a first gear 3, a second gear 4, a driven rotating shaft 5, a clamping device 6, a moving block 6a, a cross rod 6b, a vertical plate 6c, a reinforcing rod 6d, a clamping plate 6e, a braking gear 7, a handle 8, an expansion screw body 9, a drawing instrument 10, a braking device 11, a driving part 11a, a transverse plate 11b, a vertical rod 11c, a toothed plate 11d and a protective cover 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, the expansion screw drawing resistance detection device comprises an outer shell 1, a transmission device and a clamping device 6, wherein the transmission device and the clamping device are arranged in the outer shell 1, and the clamping device 6 is movably connected to the transmission device. The shell body 1 is equipped with the inner chamber, and the top is equipped with draws appearance 10, wherein, is equipped with initiative pivot 2 among the transmission, and 2 left sides of initiative pivot are connected for rotating with 1 inner chamber of shell body, and 2 right sides of initiative pivot run through the through-hole on the 1 inner chamber of shell body, and 2 right sides of initiative pivot still are equipped with handle 8, and handle 8 is located shell body 1 outsidely, and the diameter of handle is greater than 2 diameters of initiative pivot, makes things convenient for the staff to grip. The middle position of the driving rotating shaft 2 is sleeved with a first gear 3, and two braking gears 7 are symmetrically and fixedly sleeved on the driving rotating shaft 2 by taking the first gear 3 as a central reference. A driven rotating shaft 5 is arranged right below the driving rotating shaft 2, the left end and the right end of the driven rotating shaft 5 are rotatably connected in the inner cavity of the outer shell 1, a second gear 4 is sleeved at the middle position of the driven rotating shaft 5, and the first gear 3 is meshed with the second gear 4. Preferably, the diameter of the first gear 3 can be set to be larger than that of the second gear 4 during application, and when the gears are meshed together to rotate, the rotating speed of the first gear 3 is slower than that of the second gear 4, so that the clamping can be adjusted quickly. The driven rotating shaft 5 is also provided with two sections of opposite external threads. Correspondingly, the clamping devices 6 comprise moving blocks 6a and L-shaped frames, the moving blocks 6a in the two clamping devices 6 are respectively sleeved on the external threads of the driven rotating shaft 5 and are symmetrically arranged at the middle position of the outer shell 1, the moving blocks 6a are provided with matched threaded holes, and the outer parts of the moving blocks are fixedly connected with the upper ends of the vertical plates 6 c. Wherein, 1 bottom of shell body is equipped with two slide openings, and every riser 6c lower extreme all runs through the slide opening and sliding connection is in the slide opening, the equal fixedly connected with horizontal pole 6b of one side that two risers 6c are relative, the equal fixedly connected with grip block 6e of the other end of every horizontal pole 6b, grip block 6e and the native counterbalance of inflation screw are held one side and are equipped with the arc bending. The bottom of the outer shell 1 is also provided with a groove which is positioned between the two sliding holes and can accommodate a nut of the expansion screw body 9.

Referring to fig. 1 again, a device for detecting the pulling resistance of an expansion screw, wherein a reinforcing rod 6d is further arranged at the joint of a cross rod 6b and a vertical plate 6c of a clamping device 6, and the reinforcing rod 6d is fixedly connected with the cross rod and the vertical plate, so that the clamping device 6 can clamp an expansion screw body 9 more stably.

Referring to fig. 1 and 2, the device for detecting the drawing resistance of the expansion screw is provided with two braking devices 11 arranged at the top of an outer shell 1 and positioned at two sides of a drawing instrument 10. The braking device 11 comprises a toothed plate 11d, a transverse plate 11b, a vertical rod 11c, a driving part 11a and a protective cover 12, wherein the toothed plate 11d, the transverse plate 11b, the vertical rod 11c, the driving part 11a and the protective cover 12 limit the driving rotating shaft 2 to rotate in an inner cavity, the protective cover 12 is fixedly connected to the upper end surface of the outer shell 1, and the driving part 11a is fixed with the inner wall of the protective cover 12, wherein the driving part 11a can be an electric telescopic cylinder, a motor with a lead screw and the like; the output end of the driving part 11a is fixedly connected with transverse plates 11b, the lower end face of each transverse plate 11b is fixedly connected with a vertical rod 11c, the lower end of each vertical rod 11c penetrates through the through hole in the upper end of the shell, the lower end of each vertical rod 11c is fixedly connected with a toothed plate 11d, and the toothed plates 11d can be driven by the driving part 11a to reciprocate in the through hole in the vertical direction; when the two toothed plates 11d descend to the right position, the two toothed plates can just contact with the two brake gears 7 respectively to be meshed, and when the two toothed plates 11d ascend to the right position, the two toothed plates can just separate from the two brake gears 7 respectively.

Referring to fig. 3, in the utility model, when in use, the expansion screw body 9 welded with the nut is only required to be fixed, so that the nut abuts against the groove, the handle is rotated, the handle can drive the driving rotating shaft 2 to rotate, the driving rotating shaft 2 can drive the first gear 3 to rotate, the first gear 3 drives the meshing connection second gear 4 to rotate, then the second gear 4 drives the driven rotating shaft 5 to rotate, the driven rotating shaft 5 drives the two moving blocks 6a to move inwards, so that the two clamping devices 6 move towards the expansion screw body 9, the arc surface of the clamping plate 6e finally abuts against the expansion screw body 9, the expansion screw body 9 is clamped, then the brake device 11 button is manually started, the driving part 11a can drive the transverse plate 11b to move downwards, the transverse plate 11b can drive the toothed plate 11d through the vertical rod 11c, the toothed plate 11d moves downwards and abuts against the brake gear 7, the toothed plate 11d is engaged with the brake gear 7, the driving rotating shaft 2 can be limited and fixed, the loosening of the rotating shaft 2 is prevented, and then the clamping plate 6e is prevented, and the expansion screw body 9 is tested by drawing through the instrument 10; referring to fig. 4 again, after the pull-out test is finished, the button of the brake unit 11 is manually started again, so that the toothed plate 11d moves upward to be separated from the brake gear 7, the handle is rotated in the opposite direction again, and the transmission connection sequence is consistent with the principle described in fig. 3, but all the parts rotate or move in the opposite direction in sequence, which is not repeated one by one (according to fig. 4), and finally, the handle drives the active rotating shaft 2, and the clamping device 6 moves in the opposite direction through the multi-stage transmission of the active rotating shaft 2, and the clamping plate 6e is separated from the expansion screw body 9, so that the disassembly step is finished. Because above-mentioned structure adopts connected mode to be mostly gear connection, threaded connection, makes its stable, dismouting inflation screw fast and carries out tensile detection. Furthermore, a brake device 11 is provided to prevent the clamping plate 6e from loosening, so that the assembly and disassembly can be completed more stably and quickly.

The above, only be the preferred embodiment of the present invention, but the utility model discloses a protection scope is not limited to this, and any technical personnel who is familiar with this technical field is in the technical scope of the utility model discloses, according to the utility model discloses a technical scheme and utility model design in addition the replacement of equivalence or change, all should be covered in the protection scope of the utility model.

Claims

1. The utility model provides an anti drawing force detection device of inflation screw, by the shell body, place transmission and clamping device in the shell body in and constitute its characterized in that:

the outer shell is provided with an inner cavity, and the top of the outer shell is provided with a drawing instrument;

the transmission device includes:

the driving rotating shaft is rotatably connected to the inner cavity of the outer shell;

the driven rotating shaft is rotatably connected to the inner cavity of the outer shell and is close to the driving rotating shaft;

the first gear is sleeved on the driving rotating shaft;

the second gear is sleeved on the driven rotating shaft and is meshed with the first gear;

the clamping device comprises:

the moving block is connected with the driven rotating shaft in a sliding manner;

and the L-shaped frame is fixedly connected to the moving block.

2. The expansion screw drawing force resistance detection device according to claim 1, wherein: the bottom of shell body is equipped with recess and two slide opening, the recess can hold inflation screw nut, the recess is located between two slide opening.

3. The expansion screw drawing resistance detection device according to claim 2, wherein: the right end of the driving rotating shaft penetrates through the right side of the outer shell, a handle is arranged at the right end of the driving rotating shaft, and the diameter of the handle is larger than that of the driving rotating shaft.

4. The expansion screw drawing force resistance detection device according to claim 1, wherein: the top of the outer shell is provided with two braking devices which are positioned at two sides of the drawing instrument;

the braking device includes:

the protective cover is fixedly connected to the top of the outer shell;

the driving part is arranged on the protective cover and is positioned in the protective cover;

one side of the transverse plate is fixedly connected with the output end of the driving part;

one end of the vertical rod is fixedly connected to the other side of the transverse plate, and the other end of the vertical rod is connected to the top of the outer shell in a sliding manner;

the toothed plate is fixedly connected to the vertical rod;

and the brake gear is sleeved on the driving rotating shaft and can be separated and meshed with the toothed plate.

5. The expansion screw drawing force resistance detection device according to claim 1, wherein: the first gear diameter is greater than the second gear diameter.

6. The expansion screw drawing resistance detection device according to claim 2, wherein: two sections of threads are arranged on the driven rotating shaft, and the thread directions of the two sections of threads are opposite.

7. The expansion screw drawing force resistance detection device according to claim 6, wherein: the clamping device is two, and each moving block is in threaded connection with one section of thread.

8. The expansion screw drawing resistance force detection device according to claim 7, wherein: the two L-shaped frames are symmetrically arranged on two sides of the groove respectively, and move towards the opposite direction or the opposite direction to clamp the expansion screws;

the L-shaped frame comprises:

one side of the vertical plate is fixedly connected to the moving block, the other side of the vertical plate penetrates through the sliding hole, and the vertical plate is connected to the sliding hole in a sliding mode;

horizontal pole, fixed connection is located the shell body bottom outside in riser opposite side.

9. The expansion screw drawing resistance detection device according to claim 8, wherein: and the cross rod is provided with a clamping plate.

10. The expansion screw drawing resistance detection device according to claim 9, wherein: and one side of the clamping plate, which is in contact with the expansion screw, is provided with an arc-shaped bend.