A casing device
By designing an automated sleeve-fitting device, the automated sleeve-fitting of heat shrink tubing is achieved using a drive unit and a connecting rod stop structure. This solves the problems of high labor intensity and inaccurate spacing associated with manual sleeve-fitting, thereby improving production efficiency and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-16
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing technology, the process of installing heat shrink tubing in the steel reinforcement cage of high-speed railway track slabs relies on manual operation, which is labor-intensive, inefficient, and the spacing of the heat shrink tubing is inaccurate, making it difficult to meet the requirements of the binding points.
A sleeve device was designed, including a rebar conveying device, a lifting clamp, a mounting plate, and a mechanical claw. The device achieves automated sleeve connection of heat shrink tubing through a drive device, and utilizes a connecting rod and stop block structure to achieve synchronous feeding and cutting of multiple sections of heat shrink tubing. The device works in conjunction with the conveying device to complete the automated sleeve connection of rebar.
The automated splicing of heat-shrinkable steel tubing has been achieved, which has improved production efficiency, reduced labor costs, ensured the accuracy of the spacing of the heat-shrinkable tubing, and met the requirements of the binding points.
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Figure CN117445386B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automation equipment technology, and more specifically to a sleeve device. Background Technology
[0002] In industrial production, many similar bar-shaped components require sleeves. For example, the transverse bars and vertical bars in the steel reinforcement cage of high-speed railway track slabs need to be sleeved with multiple heat shrink tubes spaced at specific intervals.
[0003] The reason for using heat-shrink tubing on the transverse and vertical reinforcing bars of high-speed railway track slabs is primarily because the longitudinal and planar closed loops of the reinforcing bars within the ballastless track slab generate a magnetic field, which affects the transmission performance of the resonant, uninsulated track circuit. Therefore, it is necessary to insulate the track slab reinforcing cage to eliminate the formation of closed loops within the reinforcing bars. In actual production, insulation of the reinforcing cage is achieved by wrapping several sections of heat-shrink tubing around the reinforcing bars. Current technology typically involves manually wrapping many sections of heat-shrink tubing around the reinforcing bars one by one. This method has the following problems in actual production:
[0004] 1. Manual operation is labor-intensive, has a low degree of automation, and low production efficiency.
[0005] 2. The spacing between several sections of heat shrink tubing on the reinforcing bars is mainly achieved by the operators. If the spacing of the heat shrink tubing is inaccurate, it will not meet the requirements of the reinforcing bar binding points.
[0006] In view of the problems existing in the prior art, the present invention combines years of design and use experience in related fields with strong professional knowledge to design and manufacture a sleeve device to overcome the above-mentioned defects. Summary of the Invention
[0007] To address the problems existing in the prior art, the present invention provides a sleeve device that enables heat shrink tubing to be automatically sleeved onto steel bars, thereby improving production efficiency and reducing labor intensity.
[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a sleeve device, including a base, wherein a steel bar conveying device is provided on the base, and the steel bars can be conveyed sequentially on the steel bar conveying device;
[0009] The base is provided with several lifting clamps along the conveying direction of the steel bar conveying device. The lifting clamps can lift and clamp the steel bars on the steel bar conveying device.
[0010] The base is provided with a support frame, which includes a support beam that spans the rebar conveying device. Several mounting plates slide on the support beam, and each mounting plate is equipped with several sets of mechanical claws and several lifting clamps.
[0011] The support frame is equipped with a driving device that can move the mounting plate on the support beam;
[0012] The steel bar conveying device is equipped with a feeding and cutting device on one side. Several mounting plates can be moved simultaneously to the side close to the feeding and cutting device. The feeding and cutting device can transport heat shrink tubing into the mechanical claws of the several mounting plates, and the feeding and cutting device can cut the heat shrink tubing between the mechanical claws at the bottom of adjacent mounting plates.
[0013] Preferably, the rebar conveying device consists of two parallel conveyor chains, each with several positioning slots, in which the rebar is placed and conveyed along with the conveyor chains.
[0014] Preferably, the base is provided with a leveling device, which is located on one side of the rebar conveying device or on both sides of the rebar conveying device, and the leveling device can level the rebar conveyed on the rebar conveying device.
[0015] The leveling device includes a leveling drive mechanism and a leveling plate. The leveling drive mechanism drives the leveling plate to abut against the end of the reinforcing bar to level it.
[0016] Preferably, the feeding and cutting device includes a feeding device and a cutting device. When several mounting plates move simultaneously to the side close to the feeding and cutting device, the feeding device can transport the heat shrink tubing into the mechanical grippers of the several mounting plates.
[0017] The cutting device includes a tool feed drive and a cutting blade. The tool feed drive can drive the cutting blade to shuttle between the mechanical claws at the bottom of adjacent mounting plates.
[0018] Preferably, the mounting plate is configured as three plates, namely a first mounting plate, a second mounting plate and a third mounting plate, wherein the second mounting plate is disposed between the first mounting plate and the third mounting plate, and the first mounting plate is disposed on the side away from the feeding and cutting device.
[0019] The first mounting plate is provided with a first driving device at its bottom. The first driving device is mounted on the support frame and can drive the first mounting plate to slide on the support beam.
[0020] The bottom of the second mounting plate is provided with a second driving device, which is mounted on the support frame. The second driving device can drive the second mounting plate and the third mounting plate to slide on the support beam.
[0021] Preferably, a connecting rod is fixed on the third mounting plate, and the direction of the connecting rod is consistent with the direction of movement of the mounting plate;
[0022] The connecting rod has a first stop near the end of the second mounting plate. The second mounting plate has a second limiting hole. The second mounting plate is sleeved on the connecting rod through the second limiting hole. The diameter of the second limiting hole is larger than the diameter of the connecting rod and smaller than the size of the first stop.
[0023] Preferably, the support frame is provided with a limiting structure, which can limit the movement position of the third mounting plate.
[0024] Preferably, the limiting structure includes a limiting rod, the direction of which is consistent with the direction of the connecting rod, one end of which is fixed to a support frame on one side of the two conveyor chains, and the other end of which extends above the conveyor chains.
[0025] A second stop is provided at the end of the limiting rod located above the conveyor chain, and a third limiting hole is provided on the third mounting plate. The third mounting plate is sleeved on the limiting rod through the third limiting hole. The diameter of the third limiting hole is larger than the diameter of the limiting rod and smaller than the size of the second stop.
[0026] Preferably, the second mounting plate is provided with a second connecting hole, through which the limiting rod can pass through the second mounting plate;
[0027] The diameter of the second connecting hole is larger than the size of the second stop.
[0028] Preferably, the first mounting plate is provided with a first connecting hole and a third connecting hole, the limiting rod can pass through the first mounting plate through the first connecting hole, and the connecting rod can pass through the first mounting plate through the third connecting hole;
[0029] The diameter of the first connecting hole is larger than the size of the second stop, and the diameter of the third connecting hole is larger than the size of the first stop.
[0030] The advantages of this invention are:
[0031] 1. This invention moves several mounting plates to one side simultaneously, and then uses a feeding and cutting device to simultaneously feed heat shrink tubing onto the mechanical claws at the bottom of all mounting plates and cut the heat shrink tubing between the mechanical claws. Then, a driving device moves the mounting plates to complete the fitting action of the heat shrink tubing on the mechanical claws. This completes the fitting of multiple heat shrink tubing on the rebar in one go. With the help of a conveying device, it replaces the traditional manual fitting of heat shrink tubing, realizes the automation and continuous fitting of heat shrink tubing on rebar, and reduces labor costs.
[0032] 2. This invention utilizes the connecting rod and the first stop to cooperate with the second limiting hole on the second mounting plate, thereby achieving the purpose of moving the third mounting plate driven by the second mounting plate. Only one second driving device is needed to drive the second mounting plate to realize the movement of the second and third mounting plates. Moreover, the size design of the connecting rod, the first stop and the second limiting hole does not affect the closeness of the second and third mounting plates.
[0033] 3. The present invention provides a limiting rod and a second stop that cooperate with the third limiting hole on the third mounting plate to limit the position of the third mounting plate. Moreover, the size design of the limiting rod, the second stop, and the second connecting hole does not affect the closeness of the second and third mounting plates. Similarly, the size design of the second stop, the first stop, and the first connecting hole and the third connecting hole on the first mounting plate does not affect the closeness of the second and first mounting plates. Attached Figure Description
[0034] Figure 1 This is a schematic diagram of the structure of a sleeve device;
[0035] Figure 2 This is a schematic diagram of the structure on the support frame of the present invention;
[0036] Figure 3 This is a schematic diagram of the cutting device of the present invention;
[0037] Figure 4 This is a schematic diagram of the lifting clamp of the present invention;
[0038] Figure 5 This is a partial schematic diagram of the transmission chain of the present invention.
[0039] In the diagram: 1-base, 2-conveyor chain, 3-aligning device, 4-feeding device, 5-cutting device, 6-lifting clamp, 7-support frame, 8-support beam, 9-third mounting plate, 10-second mounting plate, 11-first mounting plate, 12-mechanical claw, 13-first drive device, 14-first connecting hole, 15-third connecting hole, 16-second connecting hole, 17-connecting rod, 18-limiting rod, 19-tool feed drive device, 20-cutting blade, 21-positioning block, 22-positioning groove, 23-sprocket. Detailed Implementation
[0040] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0041] like Figures 1 to 5As shown, a sleeve device includes a base 1, on which a rebar conveying device is provided. The rebar can be conveyed sequentially on the rebar conveying device. The rebar conveying device of the present invention is preferably configured as two parallel conveying chains 2. The two ends of the conveying chains 2 are engaged with sprockets 23. A drive motor is provided on the base 1. The drive motor drives the conveying chains 2 to operate through the sprockets 23. A positioning block 21 is fixed on a segment of the conveying chain 2. The positioning block 21 has a positioning groove 22. The rebar is placed in the positioning groove 22 and conveyed with the conveying chain 2. It should be noted that the number of conveying chains 3 is not specifically limited. As long as it does not interfere with the sleeve operation and ensures the stability of rebar conveying, the number of conveying chains 3 can be reasonably set as needed.
[0042] To ensure that all ends of the reinforcing bars are aligned during the conveying process and to improve the accuracy of the reinforcing bar sleeves, it is preferable to install an alignment device 3 on the base 1. The alignment device 3 can be installed on one side or both sides of the reinforcing bar conveying device. The alignment device 3 can align the reinforcing bars conveyed on the reinforcing bar conveying device. The alignment device 3 specifically includes an alignment drive mechanism and an alignment plate. The alignment drive mechanism can be an alignment cylinder. The alignment drive mechanism drives the alignment plate to abut against the end of the reinforcing bar, thereby aligning the ends of the reinforcing bars on the reinforcing bar conveying device, which facilitates precise processing in subsequent processes.
[0043] Specifically, a plurality of lifting clamps 6 are provided on the base 1 between the two conveyor chains 2 along the conveying direction of the conveyor chains 2. The lifting clamps 6 can lift and clamp the steel bars in the positioning groove 22. In this embodiment, four lifting clamps 6 are preferably used and are arranged at equal intervals. The lifting clamps 6 are preferably located downstream of the leveling device 3 along the conveying direction of the steel bars to ensure that the steel bars are leveled before sleeve installation and to improve the sleeve installation accuracy.
[0044] The base 1 is provided with a support frame 7, which includes a support beam 8 spanning two conveyor chains 2. Several mounting plates slide on the support beam 8. Each mounting plate has several sets of mechanical claws 12 installed at its bottom, corresponding to several lifting clamps 6. The mechanical claws 12 can grasp heat shrink tubing. In this embodiment, each mounting plate has four sets of mechanical claws 12 installed at its bottom, each set including three mechanical claws. The four sets of mechanical claws 12 at the bottom of the mounting plate are equally spaced.
[0045] The support frame 7 is equipped with a drive device that can drive the mounting plate to move on the support beam 8. By driving the mounting plate to move, the heat shrink tubing on the mechanical claw 12 can be moved, thereby fitting the heat shrink tubing onto the steel bar.
[0046] Furthermore, the present invention provides a feeding and cutting device on one side of the two conveyor chains 2, and several mounting plates can move simultaneously to the side close to the feeding and cutting device. The feeding and cutting device can transport the heat shrink tubing to the mechanical claws 12 of the several mounting plates, and the feeding and cutting device can cut the heat shrink tubing between the mechanical claws 12 at the bottom of adjacent mounting plates.
[0047] Specifically, the feeding and cutting device includes a feeding device 4 and a cutting device 5. When several mounting plates move to the side close to the feeding and cutting device at the same time, the feeding device 4 can transport the heat shrink tubing into the mechanical claws 12 of the several mounting plates. The cutting device 5 includes a tool feed drive device 19 and a cutting blade 20. The tool feed drive device 19 can drive the cutting blade 20 to shuttle between the mechanical claws 12 at the bottom of adjacent mounting plates to complete the cutting of the heat shrink tubing.
[0048] The mounting plates are preferably provided in two sets, including one free mounting plate and several limited mounting plates. The mounting plate at the foremost position is the free mounting plate, and the rest are limited mounting plates. The free mounting plate can move from one side of the base 1 to the other side of the base 1 under the drive of the drive device, and sleeve the reinforcing bar from the other side of the base 1. The limited mounting plates can move directly to the other side of the base a preset distance under the drive of the drive device, and sleeve the reinforcing bar directly from that side. This solves the problem of sleeved reinforcing bars on both sides of the lifting clamp 6, and also avoids the need to set mounting plates and feeding and cutting devices on both sides of the base 1.
[0049] In this embodiment, three mounting plates are used as an example. By moving the three mounting plates to one side at the same time, the feeding and cutting device simultaneously completes the feeding of heat shrink tubing onto the mechanical claws 12 at the bottom of the three mounting plates and the cutting of heat shrink tubing between the mechanical claws 12. Then, the driving device drives the three mounting plates to move to complete the sleeve action of heat shrink tubing on the mechanical claws 12. The sleeve action of heat shrink tubing on the three parts of the rebar is completed in one go, replacing the traditional manual sleeve action of heat shrink tubing, realizing the automation of heat shrink tubing sleeve action on rebar and reducing labor costs.
[0050] The three mounting plates are specifically designated as a first mounting plate 11, a second mounting plate 10, and a third mounting plate 9. The second mounting plate 10 is positioned between the first mounting plate 11 and the third mounting plate 9, and the first mounting plate 11 is positioned on the side away from the feeding and cutting device. A first driving device 13 is provided at the bottom of the first mounting plate 11 and is mounted on the support frame 7. The first driving device 13 can drive the first mounting plate 11 to slide on the support beam 8. A second driving device is provided at the bottom of the second mounting plate 10 and is mounted on the support frame 7. The second driving device can drive the second mounting plate 10 and the third mounting plate 9 to slide on the support beam 8. Both the first driving device 13 and the second driving device are preferably cylinders.
[0051] To achieve the above actions and simultaneously move all three mounting plates to the side closer to the feeding and cutting device, the present invention is implemented through the following structure:
[0052] A connecting rod 17 is fixed on the third mounting plate 9. The direction of the connecting rod 17 is consistent with the direction of movement of the mounting plate. The connecting rod 17 extends towards the second mounting plate 10. A first stop is provided on the end of the connecting rod 17 near the second mounting plate 10. A second limiting hole is provided on the second mounting plate 10. The second mounting plate 10 is sleeved on the connecting rod 17 through the second limiting hole. The diameter of the second limiting hole is larger than the diameter of the connecting rod 17 and smaller than the size of the first stop. When the second driving device of the present invention drives the second mounting plate 10 to move, the heat shrink tubing on the mechanical claw 12 at the bottom of the second mounting plate 10 will be sleeved on the reinforcing bar as the second mounting plate 10 moves. When the second mounting plate 10 touches the first stop, the second mounting plate 10 will pull the third mounting plate 9 to move through the first stop and the connecting rod 17. The heat shrink tubing on the mechanical claw 12 at the bottom of the third mounting plate 9 will also be sleeved on the reinforcing bar. The above structure achieves the purpose of the second mounting plate 10 driving the third mounting plate 9 to move by utilizing the connecting rod 17 and the first stop in cooperation with the second limiting hole on the second mounting plate 10. Only one second driving device is needed to drive the second mounting plate 10 to achieve the movement needs of the second mounting plate 10 and the third mounting plate 9.
[0053] The support frame 7 of this invention is also provided with a limiting structure, which can limit the movement position of the third mounting plate 9. Specifically, the limiting structure includes a limiting rod 18, the direction of which is consistent with the direction of the connecting rod 17. One end of the limiting rod 18 is fixed to the support frame 7 on one side of the two conveyor chains 2, and the other end of the limiting rod 18 extends above the conveyor chains 2. The end of the limiting rod 18 above the conveyor chains 2 is provided with a second stop. The third mounting plate 9 is provided with a third limiting hole. The third mounting plate 9 is sleeved on the limiting rod 18 through the third limiting hole. The diameter of the third limiting hole is larger than the diameter of the limiting rod 18 and smaller than the size of the second stop. When the movement of the third mounting plate 9 touches the second stop, the third mounting plate 9 will stop moving. Similarly, the second mounting plate 10 will also stop moving. At this time, the mechanical claws 12 at the bottom of the second mounting plate 10 and the third mounting plate 9 can release the heat shrink tubing, completing the sleeve connection of the two heat shrink tubing at this position. The first stop is preferably threaded onto the connecting rod 17 to adjust the set distance between the second mounting plate 10 and the third mounting plate 9. The second stop is preferably threaded onto the limiting rod 18 to adjust the set position of the heat shrink tube on the reinforcing bar, thereby improving the applicability of the device.
[0054] To prevent the second mounting plate 10 and the third mounting plate 9 from being affected in their approach, the second mounting plate 10 is provided with a second connecting hole 16. The limiting rod 18 can pass through the second mounting plate 10 through the second connecting hole 16. The diameter of the second connecting hole 16 is larger than the size of the second stop. Similarly, to prevent the second mounting plate 10 and the first mounting plate 11 from being affected in their approach, the first mounting plate 11 is provided with a first connecting hole 14 and a third connecting hole 15. The limiting rod 18 can pass through the first mounting plate 11 through the first connecting hole 14, and the connecting rod 17 can pass through the first mounting plate 11 through the third connecting hole 15. The diameter of the first connecting hole 14 is larger than the size of the second stop, and the diameter of the third connecting hole 15 is larger than the size of the first stop.
[0055] This invention uses a three-plate mounting system as an example to illustrate the specific working process.
[0056] First, the three mounting plates are moved to the side close to the feeding and cutting device. Then, the feeding and cutting device delivers the heat shrink tubing. After the sensor detects that the heat shrink tubing is in place, the mechanical claw 12 closes and clamps the heat shrink tubing. The feeding and cutting device cuts the heat shrink tubing between the mechanical claws 12 at the bottom of the adjacent mounting plates. At this time, each set of mechanical claws 12 at the bottom of each mounting plate holds a section of heat shrink tubing.
[0057] The first drive device 13 moves the first mounting plate 11 to the side away from the feeding and cutting device, the lifting clamp 6 clamps the steel bar and lifts it, and the first drive device 13 moves back to put the heat shrink tube on one end of the steel bar.
[0058] The second drive device moves the second mounting plate 10 and the third mounting plate 9 to the designated position. During this process, the mechanical claws 12 at the bottom of the second mounting plate 10 and the third mounting plate 9 complete the corresponding heat shrink tubing connection work. At this point, all three heat shrink tubing sections are fitted onto the designated positions of the steel bars. Then, all the mechanical claws 12 open, the lifting clamp 6 retracts and releases, and the steel bars fitted with heat shrink tubing return to the conveyor chain 2 and are transported to the next process.
[0059] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention. Furthermore, it should be understood that after reading the technical description of this invention, those skilled in the art can make various alterations, modifications, and / or variations to the invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims.
Claims
1. A sleeve device, characterized in that, Includes a base (1), on which a steel bar conveying device is provided, and the steel bars can be conveyed sequentially on the steel bar conveying device; The base (1) is provided with several lifting clamps (6) along the conveying direction of the steel bar conveying device. The lifting clamps (6) can lift and clamp the steel bars on the steel bar conveying device. The base (1) is provided with a support frame (7), the support frame (7) includes a support beam (8) spanning the steel bar conveying device, and several mounting plates slide on the support beam (8). Each mounting plate is equipped with several sets of mechanical claws (12) and several lifting clamps (6). The support frame (7) is equipped with a driving device that can drive the mounting plate to move on the support beam (8); The steel bar conveying device is provided with a feeding and cutting device on one side. Several mounting plates can move simultaneously to the side close to the feeding and cutting device. The feeding and cutting device can transport the heat shrink tubing to the mechanical claws (12) of several mounting plates. The feeding and cutting device can cut the heat shrink tubing between the mechanical claws (12) at the bottom of adjacent mounting plates. The mounting plate is configured as three plates, namely a first mounting plate (11), a second mounting plate (10) and a third mounting plate (9). The second mounting plate (10) is disposed between the first mounting plate (11) and the third mounting plate (9). The first mounting plate (11) is disposed on the side away from the feeding and cutting device. The first mounting plate (11) is provided with a first driving device (13) at the bottom. The first driving device (13) is mounted on the support frame (7). The first driving device (13) can drive the first mounting plate (11) to slide on the support beam (8). The bottom of the second mounting plate (10) is provided with a second driving device. The second driving device is mounted on the support frame (7). The second driving device can drive the second mounting plate (10) and the third mounting plate (9) to slide on the support beam (8). A connecting rod (17) is fixed on the third mounting plate (9), and the setting direction of the connecting rod (17) is consistent with the moving direction of the mounting plate; The connecting rod (17) has a first stop block at the end near the second mounting plate (10). The second mounting plate (10) has a second limiting hole. The second mounting plate (10) is sleeved on the connecting rod (17) through the second limiting hole. The diameter of the second limiting hole is larger than the diameter of the connecting rod (17), and the diameter of the second limiting hole is smaller than the size of the first stop block.
2. The sleeve device according to claim 1, characterized in that, The steel bar conveying device is configured as two parallel conveying chains (2), and several positioning slots are evenly distributed on the conveying chains (2). The steel bars are placed in the positioning slots and conveyed with the conveying chains (2).
3. The sleeve device according to claim 1, characterized in that, The base (1) is provided with a leveling device (3). The leveling device (3) is set on one side of the steel bar conveying device or on both sides of the steel bar conveying device. The leveling device (3) can level the steel bars conveyed on the steel bar conveying device. The leveling device (3) includes a leveling drive mechanism and a leveling plate. The leveling drive mechanism drives the leveling plate to abut against the end of the steel bar to level the steel bar.
4. The sleeve device according to claim 1, characterized in that, The feeding and cutting device includes a feeding device (4) and a cutting device (5). When several mounting plates move to the side close to the feeding and cutting device at the same time, the feeding device (4) can transport the heat shrink tubing into the mechanical claw (12) of the several mounting plates. The cutting device (5) includes a tool feed drive device (19) and a cutting blade (20). The tool feed drive device (19) can drive the cutting blade (20) to shuttle between the mechanical claws (12) at the bottom of adjacent mounting plates.
5. A sleeve device according to claim 1, characterized in that, The support frame (7) is provided with a limiting structure, which can limit the movement position of the third mounting plate (9).
6. A sleeve device according to claim 5, characterized in that, The limiting structure includes a limiting rod (18), the direction of the limiting rod (18) is consistent with the direction of the connecting rod (17), one end of the limiting rod (18) is fixed on the support frame (7) on one side of the two conveyor chains (2), and the other end of the limiting rod (18) extends to the top of the conveyor chain (2). A second stop is provided at the end of the limiting rod (18) located above the conveyor chain (2), and a third limiting hole is provided on the third mounting plate (9). The third mounting plate (9) is sleeved on the limiting rod (18) through the third limiting hole. The diameter of the third limiting hole is larger than the diameter of the limiting rod (18), and the diameter of the third limiting hole is smaller than the size of the second stop.
7. A sleeve device according to claim 6, characterized in that, The second mounting plate (10) is provided with a second connecting hole (16), and the limiting rod (18) can pass through the second mounting plate (10) through the second connecting hole (16). The diameter of the second connecting hole (16) is larger than the size of the second stop.
8. A sleeve device according to claim 6, characterized in that, The first mounting plate (11) is provided with a first connecting hole (14) and a third connecting hole (15). The limiting rod (18) can pass through the first mounting plate (11) through the first connecting hole (14), and the connecting rod (17) can pass through the first mounting plate (11) through the third connecting hole (15). The diameter of the first connecting hole (14) is larger than the size of the second stop, and the diameter of the third connecting hole (15) is larger than the size of the first stop.
Citation Information
Patent Citations
Steel bar sleeve device
CN213006566U
Novel steel bar plastic pipe penetrating device
CN213672738U