Fabricated C-shaped pliers

Abstract

The invention discloses an assembly type C-shaped clamp and relates to the technical field of riveting, the assembly type C-shaped clamp comprises a main clamp body and a clamp head, the clamp head is detachably arranged at the end of the main clamp body, a positioning piece is arranged at the end of the main clamp body, the positioning piece is inserted into the clamp head and limits the clamp head, a fixing piece is arranged in the clamp head, and the fixing piece is fixedly connected with the clamp head. The fixing piece is fixedly connected with the main plier body and the plier head. According to the C-shaped pliers, the plier head is made of a thick raw material plate, the main plier body is made of a thin raw material plate, the material utilization rate can be remarkably increased, the manufacturing cost is reduced, meanwhile, the plier head is installed on different main plier bodies, and the C-shaped pliers of multiple specifications can be flexibly configured.

Description

TECHNICAL FIELD

[0001] The present application relates to the riveting technical field, especially to an assembled C-shaped clamp. BACKGROUND

[0002] The C-shaped clamp is a key supporting component in the riveting equipment, which is usually machined from a whole steel plate. The structure of the C-shaped clamp is generally C-shaped, one end of which is used for installing a riveting gun head, and the other end is used for installing a supporting die. During the riveting operation, the supporting die provides a stable supporting reaction force for the riveted workpiece to ensure the effective transmission of the riveting force and the stability and reliability of the riveting process. Since the end of the C-shaped clamp where the riveting gun head is installed bears the main force during the operation, this part usually needs to have a large thickness to meet the strength requirement, for example, the thickness reaches 80 mm. The rest of the C-shaped clamp is relatively small in stress, and the thickness is usually designed to be 40 mm to meet the use requirement.

[0003] In the traditional manufacturing process, the whole C-shaped clamp is machined from a raw material plate (such as a 80 mm thick steel plate) with the same thickness as the thickest part. This means that in order to form the thinner body part, a large amount of cutting machining needs to be performed on the raw material plate to remove up to 40 mm of excess material, resulting in low utilization of raw materials, high processing cost, and a large amount of waste, causing resource waste. In addition, for different product requirements, the specific shape and size of the C-shaped clamp often need to be adjusted accordingly. The traditional integrated structure makes each specification of the C-shaped clamp need to be separately machined from a whole thick plate, further increasing the consumption of raw materials and production cost. SUMMARY

[0004] In order to reduce the production cost of the C-shaped clamp, the present application provides an assembled C-shaped clamp.

[0005] The assembled C-shaped clamp provided by the present application adopts the following technical scheme: An assembled C-shaped clamp, comprising a main clamp body and a clamp head, the clamp head is detachably arranged at the end of the main clamp body, the end of the main clamp body is provided with a positioning piece, the positioning piece is inserted into the clamp head and limits the clamp head, a fixing piece is arranged in the clamp head, and the fixing piece is fixedly connected with the main clamp body and the clamp head.

[0006] By adopting the above technical scheme, when the C-shaped clamp is produced, the integrated C-shaped clamp is divided into an assembled main clamp body and a clamp head, the main clamp body and the clamp head are connected by using the fixing piece, and the clamp head is limited by using the positioning piece, so that the clamp head is more stable when installed on the main clamp body. By such arrangement, the clamp head is produced by using a thicker raw material plate, and the main clamp body is produced by using a thinner raw material plate, which can significantly improve the material utilization and reduce the manufacturing cost, and by installing the clamp head on different main clamp bodies, the C-shaped clamp can be flexibly configured in multiple specifications.

[0007] Preferably, the positioning member comprises a first positioning block and a second positioning block, the first positioning block is arranged at the end of the main pliers body, the first positioning slot is arranged on the side of the pliers head close to the main pliers body, the first positioning block is inserted into the first positioning slot, and the two side walls of the first positioning block in the height direction of the main pliers body abut against the opposite two inner walls of the first positioning slot respectively, the second positioning block is arranged on the first positioning block, the second positioning slot is arranged on the inner wall of the first positioning slot, the second positioning block is inserted into the second positioning slot, and the two side walls of the second positioning block in the thickness direction of the main pliers body abut against the opposite two inner walls of the second positioning slot respectively.

[0008] By adopting the above technical scheme, when the pliers head is connected with the main pliers body, the first positioning block and the second positioning block on the main pliers body are inserted into the first positioning slot and the second positioning slot of the pliers head, the first positioning block cooperates with the first positioning slot to limit the pliers head in the height direction of the main pliers body, the second positioning block cooperates with the second positioning slot to limit the pliers head in the thickness direction of the main pliers body, so that the connection between the pliers head and the main pliers body is more stable.

[0009] Preferably, a groove is arranged on the first positioning block, and the second positioning block is detachably arranged in the groove, and the two side walls of the second positioning block in the thickness direction of the main pliers body abut against the opposite two inner walls of the groove respectively.

[0010] By adopting the above technical scheme, the second positioning block is detachably arranged in the groove and abuts against the opposite two inner walls of the groove, so that the second positioning block is convenient to disassemble and replace, and the stability of the second positioning block is improved.

[0011] Preferably, a weight-reducing hole is arranged in the pliers head, the fixing member is a bolt, the fixing member passes through the pliers head through the weight-reducing hole and is fixed in the main pliers body in the width direction of the main pliers body, and two fixing members are arranged.

[0012] By adopting the above technical scheme, the weight-reducing hole reduces the weight of the pliers head, and the two fixing members pass through the pliers head through the weight-reducing hole and are threadedly fixed in the main pliers body, so that the pliers head can be fixed on the main pliers body and limited in the width direction of the main pliers body.

[0013] Preferably, the first inclined wall and the second inclined wall are arranged on the upper side and the lower side of the pliers head respectively, and the inclination of the second inclined wall is greater than that of the first inclined wall.

[0014] By adopting the above technical scheme, when the pliers head is installed, the first inclined wall or the second inclined wall is arranged above the pliers head by installing or reversing the pliers head, so that the height of the riveting gun head installed on the pliers head can be adjusted.

[0015] Preferably, the fixing component includes a first fixing rod and a first fixing head. The first fixing head is rotatably disposed at the top end of the first fixing rod. Fixing holes are formed in the pliers head and the first positioning block along the height direction of the main pliers body. The first fixing rod is adapted to slide and insert into the fixing holes. The first fixing head is threaded onto the pliers head.

[0016] By adopting the above technical solution, when fixing the pliers head and the main pliers body, the first fixing rod is first inserted into the fixing hole, and then the first fixing head is rotated to fix the first fixing rod, thus fixing the pliers head to the main pliers body. This design eliminates the need for installation through the weight-reduction hole when using fasteners to fix the pliers head, improving the convenience of fastener assembly and disassembly.

[0017] Preferably, a groove is formed inside the first fixing rod along its own length direction, and a second fixing rod is slidably arranged inside the groove. A second fixing head is rotatably arranged at the top end of the second fixing rod, and the second fixing head is threaded inside the first fixing head. Multiple fixing blocks are slidably arranged on opposite sides of the first fixing rod and the second fixing rod. Multiple push blocks are arranged on opposite sides of the second fixing rod, and the push blocks push the fixing blocks to move and press against the inner wall of the fixing hole.

[0018] By adopting the above technical solution, the second fixing head is rotated, and the second fixing head drives the second fixing rod to move in the slide groove. The second fixing rod drives multiple push blocks to move synchronously. The multiple push blocks move and contact multiple fixing blocks. The push blocks push the fixing blocks to move and press against the pliers head and the first positioning block located on the inner side of the positioning hole, thereby strengthening the connection between the pliers head and the main pliers body.

[0019] Preferably, two anti-reverse blocks are symmetrically slidably arranged on both sides of the bottom of the slide groove inside the first fixing rod, and an anti-reverse groove is opened at the bottom end of the second fixing rod. A first elastic element is provided inside the first fixing rod for pushing the anti-reverse blocks to slide into the anti-reverse groove. An unlocking rod is slidably arranged inside the second fixing head and the second fixing rod. An unlocking block is fixedly arranged at the bottom end of the unlocking rod. The unlocking block is located in the anti-reverse groove and is used to push the two anti-reverse blocks to move out of the anti-reverse groove. A second elastic element is provided inside the second fixing rod for driving the unlocking rod to move upward.

[0020] By adopting the above technical solution, when the second fixing rod drives the push block to push the fixing block against the inner wall of the fixing hole, the first elastic element pushes the anti-reverse block to move and insert it into the anti-reverse groove. The anti-reverse block limits the second fixing rod through the anti-reverse groove, so that the position of the second fixing rod will not move, thereby improving the fixing effect of the fixing block. When it is necessary to disassemble the fixing component, the unlocking rod drives the unlocking block to move, and the unlocking block pushes the anti-reverse block out of the anti-reverse groove, so that the second fixing rod and the first fixing rod can be disassembled and removed in sequence.

[0021] Preferably, a third inclined wall is formed on the side of the fixing block near the second fixing rod. The third inclined wall is inclined from top to bottom towards the second fixing rod. The push block abuts against the third inclined wall of the fixing block. Both ends of the anti-reverse groove are stepped, and the depth of the stepped anti-reverse groove gradually increases towards the two anti-reverse blocks.

[0022] By adopting the above technical solution, the second fixing rod drives the push block to move and abut against the third inclined wall of the fixing block. The push block pushes the fixing block to move through the third inclined wall. The anti-reverse block is inserted into the anti-reverse groove at a greater depth to prevent backflow. When the fixing block wears out due to long-term use, the second fixing head continues to rotate. The second fixing head drives the second fixing rod to continue moving. The second fixing rod drives the push block to move, thereby tightening the fixing block. At the same time, when the second fixing rod continues to move, the anti-reverse block is inserted into the anti-reverse groove at a shallower depth, so that the anti-reverse block maintains its anti-reverse effect.

[0023] Preferably, a plurality of push rods are symmetrically rotatably arranged inside the second fixed rod, and a stop block is provided on the side wall of the fixed block near the second fixed rod. The push rods are inclined and move to abut against the stop block.

[0024] By adopting the above technical solution, when the second fixing rod pushes the fixing block against the inner wall of the fixing hole, the second fixing rod drives multiple push rods to move synchronously and abut against multiple stops. When the fixing block wears out due to long-term use, the second fixing head continues to rotate, and the second fixing head drives the second fixing rod to continue to move. The second fixing rod drives the push rod to rotate and abut against the stops, thereby fastening the fixing block.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. C-type pliers are assembled by using the main pliers body and pliers head. The pliers head is produced using a thicker raw material plate, while the main pliers body is produced using a thinner raw material plate. This can significantly improve material utilization and reduce manufacturing costs. At the same time, by installing the pliers head on different main pliers bodies, C-type pliers of multiple specifications can be flexibly configured. 2. With the help of the first positioning block and the second positioning block, when the pliers head is connected to the main pliers body, the first positioning block and the second positioning block on the main pliers body are inserted into the first positioning groove and the second positioning groove of the pliers head. The first positioning block cooperates with the first positioning groove to limit the pliers head along the height direction of the main pliers body, and the second positioning block cooperates with the second positioning groove to limit the pliers head along the thickness direction of the main pliers body, thereby making the connection between the pliers head and the main pliers body more stable. 3. By using the first and second inclined walls, when installing the pliers head, the first or second inclined wall is positioned above the pliers head by installing the pliers head in either the forward or reverse direction, thereby allowing adjustment of the height of the riveting gun head installed on the pliers head. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the assembled C-type clamp in Embodiment 1 of this application; Figure 2 This is a partially exploded sectional view of the assembled C-type clamp in Embodiment 1 of this application; Figure 3 This is a partial structural cross-sectional view of the assembled C-type clamp in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the overall structure of the assembled C-type clamp in Embodiment 2 of this application; Figure 5 This is a partial structural cross-sectional view of the assembled C-type clamp in Embodiment 2 of this application; Figure 6 For this application Figure 5 Enlarged view of point A in the middle; Figure 7 For this application Figure 5 Enlarged view of point B in the middle; Figure 8 This is a partial structural cross-sectional view of the assembled C-clamp in Embodiment 2 of this application, highlighting the first chamfer, the second chamfer, and the third chamfer; Figure 9 This is a partially exploded sectional view of the assembled C-type clamp in Embodiment 2 of this application; Figure 10 This is a partial structural cross-sectional view of the assembled C-type clamp in Embodiment 3 of this application; Figure 11 This is a partial structural cross-sectional view of the assembled C-type clamp in Embodiment 4 of this application; Figure 12 This is a partial structural cross-sectional view of the assembled C-type clamp in Embodiment 4 of this application, highlighting the stepped check groove.

[0027] Reference numerals: 1. Main clamp body; 2. Clamp head; 3. Positioning component; 31. First positioning block; 32. Second positioning block; 4. Fixing component; 41. First fixing rod; 411. Rod body; 412. Side cover; 42. First fixing head; 5. First positioning groove; 6. Second positioning groove; 7. Groove; 8. Weight reduction hole; 9. First inclined wall; 10. Second inclined wall; 11. Fixing hole; 12. Slide groove; 13. Second fixing rod; 14. Second fixing head; 15. Fixing block; 16. Push block; 17. Anti-reverse block; 18. Anti-reverse groove; 19. First elastic component; 20. Unlocking rod; 21. Unlocking block; 22. Second elastic component; 23. Third inclined wall; 24. Push rod; 25. Stop block; 26. Fixing base; 27. First chamfer; 28. Second chamfer; 29. ​​Third chamfer; 30. Baffle. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-12This application will be described in further detail.

[0029] This application discloses an assembled C-type clamp.

[0030] Example 1: Reference Figure 1 , Figure 2 and Figure 3 A modular C-type pliers includes a detachable main pliers body 1 and a pliers head 2. A positioning element 3 is installed at the top of the main pliers body 1, and the pliers head 2 is installed at the top of the main pliers body 1, with the positioning element 3 inserted into the pliers head 2. A weight-reducing hole 8 is formed inside the pliers head 2, and two fixing elements 4 are installed inside the pliers head 2. The two fixing elements 4 are inserted into the pliers head 2 through the weight-reducing hole 8 and fixed inside the main pliers body 1, and the two fixing elements 4 are located on the upper and lower sides of the positioning element 3 in the vertical direction. In this application, the fixing elements 4 can be bolts.

[0031] When optimizing the structural design and production process of C-type pliers, a split assembly scheme is adopted, which decomposes the traditional integral structure into two modules: the main plier body 1 and the plier head 2. The two are reliably connected by a high-strength fastener 4, and a positioning component 3 is added to precisely constrain and limit the plier head 2, ensuring the assembly stability and anti-eccentric load capacity of the plier head 2 on the main plier body 1.

[0032] The pliers head 2 uses thicker sheet metal to ensure the strength and durability of key components, while the main pliers body 1 uses thinner sheet metal, thereby significantly improving material utilization and reducing overall manufacturing costs. Furthermore, thanks to its modular design, the same pliers head 2 can be adapted to different sizes of main pliers body 1, enabling flexible configuration and rapid combination of multiple specifications of C-type pliers and enhancing the scalability of the product series.

[0033] Specifically, the positioning component 3 includes a first positioning block 31 and a second positioning block 32. The first positioning block 31 is integrally formed on the side wall of the top of the main clamp body 1. A groove 7 is formed vertically in the middle of the side wall of the first positioning block 31 away from the main clamp body 1. The second positioning block 32 is detachably fixed in the groove 7 by two bolts. A first positioning groove 5 is formed on the side wall of the clamp head 2 near the main clamp body 1. A second positioning groove 6 is formed on the inner wall of the clamp head 2 located in the first positioning groove 5.

[0034] During the assembly of the jaw head 2 and the main jaw body 1, a three-way positioning structure is formed by the first positioning block 31 and the second positioning block 32 installed on the main jaw body 1, which are respectively embedded in the first positioning groove 5 and the second positioning groove 6 on the jaw head 2, and two fixing members 4. Specifically, the first positioning block 31 abuts against the two opposite inner walls of the first positioning groove 5 along its two side walls in the height direction of the main jaw body 1, constraining the displacement of the jaw head 2 along the height direction (Z-axis) of the main jaw body 1; the second positioning block 32 abuts against the two opposite inner walls of the second positioning groove 6 along its two side walls in the thickness direction of the main jaw body 1, thus constraining the displacement of the jaw head 2 along the thickness direction (X-axis) of the main jaw body 1; and the fixing members 4 pass through the jaw head 2 along the width direction of the main jaw body 1 and are threaded into the main jaw body 1, thus constraining the displacement of the jaw head 2 along the width direction (Y-axis) of the main jaw body 1. This triple positioning mechanism effectively restricts the movement of the jaw head 2, significantly improving the overall rigidity, centering, and resistance to combined loads of the assembly, thereby ensuring the stability and reliability of the connection structure.

[0035] The clamp head 2 has a first inclined wall 9 and a second inclined wall 10 formed on its upper and lower sides respectively on the weight reduction hole 8. The inclination angle of the second inclined wall 10 is greater than that of the first inclined wall 9. When assembling the clamp head 2, it can be rotated 180° to achieve bidirectional installation (i.e., forward or reverse installation). This operation allows either the first inclined wall 9 or the second inclined wall 10 with different inclination angles on the clamp head 2 to be selected as the upper mounting reference surface. By switching between different mounting surfaces, differentiated support heights can be provided for the riveting gun head mounted on the clamp head 2, thereby effectively adjusting the working height of the riveting gun head to adapt to different working conditions or workpiece sizes.

[0036] The implementation principle of the assembled C-clamp in this application embodiment is as follows: When optimizing the structural design and production process of the C-clamp, a split assembly scheme is adopted. The traditional integral structure is decomposed into two modules: the main clamp body 1 and the clamp head 2. A reliable connection between the two is achieved through a high-strength fastener 4, and a positioning component 3 is added to precisely constrain and limit the clamp head 2, ensuring the assembly stability and anti-eccentric load capacity of the clamp head 2 on the main clamp body 1. The clamp head 2 uses thicker plate to ensure the strength and durability of key parts, while the main clamp body 1 uses thinner plate, thereby significantly improving material utilization and reducing overall manufacturing costs. At the same time, thanks to the modular design, the same clamp head 2 can be adapted to different specifications of the main clamp body 1, realizing flexible configuration and rapid combination of multiple specifications of C-clamps, and enhancing the scalability of the product series.

[0037] Example 2: Reference Figure 4 , Figure 5 and Figure 6The difference between this embodiment and Embodiment 1 is that the fixing component 4 includes a first fixing rod 41 and a first fixing head 42. Fixing holes 11 are formed in the jaw 2 and the first positioning block 31 along the height direction of the main jaw body 1. The first fixing rod 41 is slidably inserted into the fixing hole 11. A fixing seat 26 is fixedly installed on the top of the jaw 2, and the first fixing head 42 is threaded into the fixing seat 26. The top end of the first fixing rod 41 is round, and the first fixing head 42 is rotatably installed on the top end of the first fixing rod 41. By first inserting the first fixing rod 41 into the fixing hole 11 and then threading the first fixing head 42 into the fixing seat 26, the jaw 2 and the main jaw body 1 can be initially fixedly connected.

[0038] Reference Figure 6 and Figure 7 The first fixing rod 41 has a groove 12 along its length, and the second fixing rod 13 is slidably installed in the groove 12 of the first fixing rod 41. The second fixing head 14 is threadedly installed in the first fixing head 42. The top end of the second fixing rod 13 is round, and the top end of the second fixing rod 13 is rotatably connected to the second fixing head 14.

[0039] Multiple push blocks 16 are fixedly installed on the opposite side walls of the second fixing rod 13 along the width direction of the main clamp body 1 and at intervals along its own length direction. The ends of the push blocks 16 away from the second fixing rod 13 are semi-circular. Fixing blocks 15 are slidably installed on the opposite side walls of the first fixing rod 41 along its own width direction. Multiple fixing blocks 15 are installed at intervals along the length direction of the first fixing rod 41, and the multiple fixing blocks 15 correspond one-to-one with the multiple push blocks 16.

[0040] Reference Figure 6 , Figure 7 and Figure 8 The first fixing rod 41 has anti-reverse blocks 17 slidably mounted on both sides of the bottom of the slide groove 12. The top of the two anti-reverse blocks 17 on the side closer to each other is formed with a first chamfer 27. The bottom wall of the second fixing rod 13 has a second chamfer 28 on both sides. The bottom of the second fixing rod 13 has an anti-reverse groove 18. The first fixing rod 41 has a first elastic element 19 mounted on the side of the two anti-reverse blocks 17 that are farther apart from each other. In this application, the first elastic element 19 can be a spring, and the first elastic element 19 pushes the anti-reverse block 17 into the anti-reverse groove 18.

[0041] An unlocking rod 20 is slidably installed inside the second fixing head 14 and the second fixing rod 13 along the length of the second fixing rod 13, with the top end of the unlocking rod 20 extending out of the second fixing head 14. A second elastic element 22 is installed inside the second fixing head 14, and a baffle 30 is fixedly installed on the unlocking rod 20, abutting against the top end of the second elastic element 22. In this application, the second elastic element 22 can be a spring. An unlocking block 21 is slidably installed inside the anti-reverse groove 18 on the second fixing rod 13. A third chamfer 29 is formed on both sides of the bottom wall of the unlocking block 21, and the bottom end of the unlocking rod 20 is fixedly connected to the unlocking block 21.

[0042] Reference Figure 9 The first fixing rod 41 consists of a rod body 411 and a side cover 412. The side cover 412 is detachably and fixedly installed on the side of the rod body 411 by multiple bolts. The second fixing rod 13 is slidably installed inside the rod body 411. The second fixing rod 13 can be removed from the rod body 411 by removing the side cover 412, thus facilitating its replacement.

[0043] The implementation principle of Embodiment 2 of this application is as follows: During the connection and fixing process between the pliers head 2 and the main pliers body 1, a two-stage locking mechanism is adopted to ensure the stability and adjustability of the assembly. First stage: The first fixing rod 41 is inserted into the corresponding fixing hole 11, and initial fixing is achieved by rotating the first fixing head 42 at its end, thereby firmly installing the pliers head 2 on the main pliers body 1. This solution eliminates the step of assembly using the weight-reducing hole 8 required in traditional structures, significantly improving the ease of assembly and disassembly of the locking components and operational efficiency. Second stage: The second fixing head 14 is rotated, causing the second fixing rod 13 to move within the slide groove 12. The second fixing rod 13 simultaneously drives multiple push blocks 16 to move synchronously, causing the push blocks 16 to contact multiple fixing blocks 15. Under the action of the push blocks 16, the fixing blocks 15 move outward, tightly pressing against the inner side of the pliers head 2 and the first positioning block 31, thereby further applying radial clamping force on the basis of the original positioning, greatly enhancing the overall rigidity of the connection.

[0044] During the movement of the second fixed rod 13, the second chamfer 28 and the first chamfer 27 on the anti-reverse block 17 push the anti-reverse block 17 to move and compress the first elastic element 19. When the second fixed rod 13 moves to the target position and the push block 16 fully presses the fixed block 15, the built-in first elastic element 19 pushes the anti-reverse block 17 to move and insert it into the anti-reverse groove 18 of the second fixed rod 13, forming a mechanical self-locking mechanism. This effectively prevents the second fixed rod 13 from accidentally retracting due to vibration or load, ensuring that the pressing state remains stable for a long time. When disassembling the pliers head 2, first insert the tool into the internal hexagonal groove of the second fixed rod 13. The tool drives the unlocking rod 20 to move downwards, and the unlocking rod 20 drives the unlocking block 21 to move downwards. The unlocking block 21 pushes the anti-reverse block 17 out of the anti-reverse groove 18 through its third chamfer 29 and the first chamfer 27 of the anti-reverse block 17, releasing the self-locking mechanism. Then, the second fixed head 14 and the first fixed head 42 can be unscrewed in sequence. After removing the first fixed rod 41 from the fixed hole 11, the disassembly is complete.

[0045] Example 3: Reference Figure 10 The difference between this embodiment and embodiment 2 is that multiple push rods 24 are rotatably installed on the opposite side walls of the second fixing rod 13 along the thickness direction of the main clamp body 1 and at intervals along its own length direction. The fixing block 15 is fixedly installed with a stop block 25 on both sides near one end of the second fixing rod 13 and along the thickness direction of the main clamp body 1, and the multiple push rods 24 correspond one-to-one with the multiple stop blocks 25.

[0046] The implementation principle of Embodiment 3 of this application is as follows: When long-term use causes wear between the fixing block 15 and the contact surface, and the preload decreases, the second fixing head 14 can continue to rotate. The second fixing head 14 drives the second fixing rod 13 to move the push rod 24 downward. At this time, the push rod 24 contacts the stop block 25 while moving downward. As the push rod 24 continues to move downward, the end of the push rod 24 will be converted into a radial pressing force on the stop block 25, thereby applying additional pressing displacement to the fixing block 15 through the stop block 25, compensating for the gap caused by wear, and restoring and maintaining the required locking force.

[0047] Example 4: Reference Figure 11 and Figure 12 The difference between this embodiment and embodiment 3 is that a third inclined wall 23 is formed on the side of the fixing block 15 near the second fixing rod 13. The third inclined wall 23 is inclined from top to bottom towards the second fixing rod 13, and the push block 16 moves to abut against the third inclined wall 23 of the fixing block 15. The bottom walls at both ends of the anti-reverse groove 18 are designed with a stepped, gradually deepening profile. Specifically, this profile has multiple anti-reverse surfaces, so that the depth of the anti-reverse groove 18 gradually increases along the direction close to the two anti-reverse blocks 17.

[0048] The implementation principle of Embodiment 4 of this application is as follows: The axial movement of the second fixed rod 13 drives the push block 16 to move downward, so that the push block 16 contacts the third inclined wall 23 on the fixed block 15. Through inclined plane transmission, the push block 16 converts the axial displacement of the second fixed rod 13 into the radial pressing movement of the fixed block 15, thereby locking the jaw head 2 and the main jaw body 1. At the same time, the anti-reverse block 17, under the action of the spring, engages in the deep area of ​​the anti-reverse groove 18 on the second fixed rod 13, forming an initial mechanical self-locking to prevent loosening.

[0049] When prolonged use causes wear on the fixing block 15 and a decrease in clamping force, the second fixing head 14 can be rotated to drive the second fixing rod 13 to further axially displace. At this time: the push block 16 continues to advance along the wedge-shaped surface of the fixing block 15, pushing the fixing block 15 to generate additional radial displacement, compensating for the wear gap, and restoring the preset locking force; after the second fixing rod 13 moves to the new position, the anti-reverse block 17 is engaged in the shallower section of the anti-reverse groove 18. Although the groove depth becomes shallower, the thrust of the first elastic element 19 makes the bottom surface of the anti-reverse block 17 abut against the anti-reverse surface of the anti-reverse groove 18, so that the anti-reverse block 17 can still be effectively locked, continue to maintain the anti-reverse function, and ensure that the locking state remains stable and reliable after compensation.

[0050] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A prefabricated C-type clamp, characterized in that: It includes a main clamp body (1) and a clamp head (2). The clamp head (2) is detachably disposed at the end of the main clamp body (1). The end of the main clamp body (1) is provided with a positioning member (3). The positioning member (3) is inserted into the clamp head (2) and limits the clamp head (2). A fixing member (4) is provided inside the clamp head (2). The fixing member (4) fixes the main clamp body (1) and the clamp head (2).

2. The assembled C-type clamp according to claim 1, characterized in that: The positioning component (3) includes a first positioning block (31) and a second positioning block (32). The first positioning block (31) is disposed at the end of the main clamp body (1). The clamp head (2) has a first positioning groove (5) on one side near the main clamp body (1). The first positioning block (31) is inserted into the first positioning groove (5). The two side walls of the first positioning block (31) along the height direction of the main clamp body (1) respectively abut against the two opposite inner walls of the first positioning groove (5). The second positioning block (32) is disposed on the first positioning block (31). The clamp head (2) has a second positioning groove (6) on the inner wall of the first positioning groove (5). The second positioning block (32) is inserted into the second positioning groove (6). The two side walls of the second positioning block (32) along the thickness direction of the main clamp body (1) respectively abut against the two opposite inner walls of the second positioning groove (6).

3. The assembled C-type clamp according to claim 2, characterized in that: The first positioning block (31) has a groove (7) and the second positioning block (32) is detachably disposed in the groove (7). The two side walls of the second positioning block (32) along the thickness direction of the main clamp body (1) respectively abut against the two opposite inner walls of the groove (7).

4. The assembled C-type clamp according to claim 1, characterized in that: The pliers head (2) has a weight reduction hole (8) inside. The fixing member (4) is a bolt. The fixing member (4) passes through the weight reduction hole (8) through the pliers head (2) and is fixed in the main pliers body (1) along the width direction. There are two fixing members (4). The two fixing members (4) are located on both sides of the positioning member (3) along the height direction of the main pliers body (1).

5. The assembled C-type pliers according to claim 4, characterized in that: The pliers (2) are located on the upper and lower sides of the weight reduction hole (8) and a first inclined wall (9) and a second inclined wall (10) are formed respectively. The inclination of the second inclined wall (10) is greater than that of the first inclined wall (9).

6. The assembled C-type pliers according to claim 2, characterized in that: The fixing member (4) includes a first fixing rod (41) and a first fixing head (42). The first fixing head (42) is rotatably disposed at the top of the first fixing rod (41). The clamp head (2) and the first positioning block (31) are provided with fixing holes (11) along the height direction of the main clamp body (1). The first fixing rod (41) is adapted to slide and insert into the fixing hole (11). The first fixing head (42) is threaded on the clamp head (2).

7. A prefabricated C-type clamp according to claim 6, characterized in that: The first fixing rod (41) has a groove (12) along its length. The first fixing rod (41) is slidably arranged with a second fixing rod (13) in the groove (12). The top end of the second fixing rod (13) is rotatably arranged with a second fixing head (14). The second fixing head (14) is threaded in the first fixing head (42). The first fixing rod (41) is slidably arranged with multiple fixing blocks (15) on opposite sides of the second fixing rod (13). The second fixing rod (13) is arranged with multiple push blocks (16) on opposite sides. The push blocks (16) push the fixing blocks (15) to move and press against the inner wall of the fixing hole (11).

8. The assembled C-type pliers according to claim 7, characterized in that: Two anti-reverse blocks (17) are symmetrically slidably arranged on both sides of the bottom of the slide groove (12) inside the first fixing rod (41). An anti-reverse groove (18) is opened at the bottom end of the second fixing rod (13). A first elastic element (19) for pushing the anti-reverse block (17) to slide into the anti-reverse groove (18) is provided inside the first fixing rod (41). An unlocking rod (20) is slidably arranged inside the second fixing head (14) and the second fixing rod (13). An unlocking block (21) is fixedly arranged at the bottom end of the unlocking rod (20). The unlocking block (21) is located in the anti-reverse groove (18) and is used to push the two anti-reverse blocks (17) to move out of the anti-reverse groove (18). A second elastic element (22) for driving the unlocking rod (20) to move upward is provided inside the second fixing rod (13).

9. A prefabricated C-type clamp according to claim 8, characterized in that: The fixing block (15) has a third inclined wall (23) on the side near the second fixing rod (13). The third inclined wall (23) is inclined from top to bottom towards the second fixing rod (13). The push block (16) abuts against the third inclined wall (23) of the fixing block (15). Both ends of the anti-reverse groove (18) are stepped, and the depth of the stepped anti-reverse groove (18) gradually increases towards the two anti-reverse blocks (17).

10. A prefabricated C-type clamp according to claim 7, characterized in that: Multiple push rods (24) are symmetrically rotated inside the second fixed rod (13). A stop block (25) is provided on the side wall of the fixed block (15) near the second fixed rod (13). The push rods (24) are inclined and move to abut against the stop block (25).

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