Adjustable pipe wrench
By adopting hydraulically driven stop plate technology in the adjustable pipe clamp, the first clamp body and the second clamp body are relatively fixed, which solves the problem of insufficient adjustment speed and accuracy in the prior art, and achieves rapid and accurate jaw size adjustment.
Patent Information
- Application Number
- CN202411971358.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-05-02
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The adjustment methods of the existing adjustable pipe clamps are limited in speed and accuracy, especially in the case of frequent adjustments, the friction between the nut and the clamp arm leads to inefficient adjustment.
The pipe clamps composed of the first clamp body and the second clamp body are adopted, and the clamp arm rods are relatively fixed by a hydraulically driven stopping pressure plate, so as to quickly adjust and lock the jaw size.
On the basis of ensuring the strength and accuracy of the pipe clamp, rapid adjustment of the jaw size is achieved, and the adjustment efficiency under working conditions is improved.
Smart Images
Figure CN119910593A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of pipe clamps, and in particular relates to an adjustable pipe clamp. Background Art
[0002] The adjustable pipe clamp is a tool with a sophisticated design. Its characteristics are that the width and clamping force of the jaws can be adjusted as needed to adapt to pipes or pipe fittings of different diameters. It has high flexibility and wide applicability. It is widely used in the installation of oil pipelines and civil pipelines and the fixing and connection of pipelines, equipment and components in different industries. The adjustment mechanism of the adjustable pipe clamp is usually a rotatable nut combined with a threaded movable clamp arm, and the size of the jaws is adjusted by rotating the nut.
[0003] However, the current adjustment method of this type of adjustable pipe clamp limits the adjustment speed and accuracy of the jaws. The adjustment process of the jaws can only rely on the rotation speed of the nut to control the speed of the jaw size adjustment. Since the friction between the nut and the threaded part of the movable clamp arm is relatively large, this adjustment method has limitations under working conditions that require frequent adjustments. Therefore, there is an urgent need for an adjustable pipe clamp that can be adjusted quickly and with guaranteed accuracy. Summary of the invention
[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts an adjustable pipe clamp to at least partially solve the problems raised in the above background technology.
[0005] The technical solution adopted is as follows: An embodiment of the present invention provides an adjustable pipe clamp, comprising: A first caliper body, the first caliper body comprising a first caliper arm rod and a first clamping portion disposed at an end of the first caliper arm rod; A second clamp body, the second clamp body comprising a second clamp arm rod arranged parallel to and in close contact with the first clamp arm rod, an end of the second clamp arm rod being provided with a second clamping portion cooperating with the first clamping portion; Among them, a clamp is fixedly provided with a hoop on the end of the second clamp arm rod away from the second clamping part, and the clamp slides on the outer wall of the first clamp arm rod, and a stop pressure plate is provided on the fitting surface of the first clamp arm rod and the second clamp arm rod, and a driver for driving the stop pressure plate to move is provided inside the first clamp arm rod, and the driver is configured to drive the stop pressure plate to move between a first position and a second position, and when the stop pressure plate is in the first position, the second clamp arm rod and the first clamp arm rod can slide relative to each other, and when the stop pressure plate is in the second position, the stop pressure plate is vertically pressed against the surface of the second clamp arm rod, so that the second clamp arm rod and the first clamp arm rod are relatively fixed.
[0006] Further, the driver includes a first oil pump fixedly arranged inside the first caliper arm rod, the output shaft of the first oil pump is fixedly connected to the stop pressure plate, and can drive the stop pressure plate to move in a direction perpendicular to the sliding path of the second caliper arm rod; A handle is fixedly provided at one end of the first clamp arm rod away from the first clamping part, and a second oil pump is fixedly provided inside the handle. The second oil pump is connected to the first oil pump through a hydraulic oil pipe, and a piston body is provided inside the second oil pump. An adjusting cap for adjusting the position of the piston body is rotatably installed at the tail end of the handle. The position of the piston body in the second oil pump is adjusted by the adjusting cap, and the amount of oil in the first oil pump and the second oil pump is controlled to drive the stop pressure plate to move between the first position and the second position.
[0007] Furthermore, a slot for accommodating the first oil pump is provided on the first caliper arm rod at a position corresponding to the stop pressure plate and away from the second caliper arm rod, and a cylinder cover plate is provided on the first caliper arm rod at a position corresponding to the slot, and the first oil pump is fixedly packaged in the slot through the cylinder cover plate, and an oil pipe groove is opened on a side surface of the first caliper arm rod away from the second caliper arm rod, and the hydraulic oil pipe is placed in the oil pipe groove.
[0008] Furthermore, a screw rod is fixedly provided at the middle position of the side of the adjusting cap facing the second oil pump, the screw rod is perpendicular to the adjusting cap, and a linkage sleeve is fixedly provided on the side of the piston body facing the screw rod. The linkage sleeve is partially ringed on the outside of the screw rod and is transmission-connected to the screw rod, and when the adjusting cap rotates, the position of the piston body in the second oil pump is adjusted through the transmission of the screw rod and the linkage sleeve.
[0009] Furthermore, the second oil pump is coaxially arranged with the screw, and the inner diameter of the second oil pump is smaller than the inner diameter of the first oil pump.
[0010] Furthermore, a first spring groove and a second spring groove are respectively provided on the mating surfaces of the first clamp arm rod and the second clamp arm rod, and when the first clamping portion abuts against the second clamping portion, the first spring groove and the second spring groove are symmetrically distributed along the mating surfaces of the first clamp arm rod and the second clamp arm rod, and springs are installed in the first spring groove and the second spring groove, so that there is elastic potential energy between the first clamp arm rod and the second clamp arm rod to bring the first clamping portion and the second clamping portion closer to each other.
[0011] Furthermore, the inner side of the clamp has a clamp groove for accommodating the first clamp arm rod, the inner wall of the clamp groove is in contact with the outer wall of the first clamp arm rod, and when the stop pressure plate is in the first position, the clamp and the first clamp arm rod can slide relative to each other, and when the stop pressure plate is in the second position, the clamp is tightly pressed against the surface of the first clamp arm rod.
[0012] Furthermore, the first clamping portion is integrally formed at the end of the first clamp arm rod, and the second clamping portion is integrally formed at the end of the second clamp arm rod.
[0013] Furthermore, the first clamping portion is detachably arranged on the end of the first clamp arm rod, the second clamping portion is detachably arranged on the end of the second clamp arm rod, a first clamping shaft is provided on the fitting surface of the first clamping portion and the first clamp arm rod, a first clamping groove which is plug-matched with the first clamping shaft is provided on the end of the first clamp arm rod, a second clamping shaft is provided on the fitting surface of the second clamping portion and the second clamp arm rod, and a second clamping groove which is plug-matched with the second clamping shaft is provided on the end of the second clamp arm rod.
[0014] Furthermore, the end surface of the first clamping portion includes a first toothed clamping surface, a first flexible clamping surface and a first thin clamping surface, and the end surface of the second clamping portion includes a second toothed clamping surface, a second flexible clamping surface and a second thin clamping surface, wherein the width of the first toothed clamping surface is equal to the width of the second toothed clamping surface, the width of the first thin clamping surface is equal to the width of the second thin clamping surface, and the width of the first thin clamping surface is smaller than the width of the first toothed clamping surface.
[0015] The beneficial effects achieved by the present invention using the above structure are as follows: The embodiment of the present invention provides a pipe clamp composed of a first clamp body and a second clamp body. The size of the jaws can be adjusted when the first clamp body and the second clamp body slide against each other. After the adjustment, the first clamp body and the second clamp body are relatively fixed by hydraulic drive to achieve locking of the jaw size. In this way, the size of the jaws can be adjusted more quickly while ensuring the strength and accuracy of the pipe clamp. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The three-dimensional structure of an adjustable pipe clamp proposed in an embodiment of the present invention is shown; Figure 2 A schematic diagram of the internal structure of an adjustable pipe clamp proposed in an embodiment of the present invention; Figure 3 A schematic structural diagram of a first clamp body provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a second clamp body provided in an embodiment of the present invention; Figure 5 A schematic diagram of a second embodiment of the first clamping portion and the second clamping portion provided in an embodiment of the present invention; Figure 6 It is a schematic diagram of a third embodiment of the first clamping portion and the second clamping portion proposed in an embodiment of the present invention.
[0017] Among them, 10, first clamp body; 11, first clamp arm; 110, first spring groove; 111, oil pipe groove; 112, oil cylinder cover plate; 113, first clamping groove; 12, first clamping part; 121, first clamping shaft; 122, first toothed clamping surface; 122.1, first flexible clamping surface; 122.2, first thin clamping surface; 13, handle; 14, adjustment cap; 141, screw rod; 15, stop plate; 20, second Clamp body; 21, second clamp arm; 210, second spring groove; 211, second clamping groove; 22, second clamping portion; 221, second clamping shaft; 222, second toothed clamp interface; 222.1, second flexible clamp interface; 222.2, second thin clamp interface; 23, clamp; 230, clamp groove; 30, spring; 40, first oil pump; 50, second oil pump; 51, piston body; 511, linkage sleeve; 60, hydraulic oil pipe.
[0018] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.
[0020] In the description of the embodiments, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.
[0021] like Figure 1 As shown, in order to improve the adjustment speed of the jaw size of the pipe clamp while ensuring the strength and accuracy of the pipe cavity, an adjustable pipe clamp is provided in an embodiment of the present invention, which mainly includes a first clamp body 10 and a second clamp body 20.
[0022] Among them, the first pliers body 10 includes a first pliers arm rod 11 and a first clamping portion 12 arranged at the end of the first pliers arm rod 11, and the second pliers body 20 includes a second pliers arm rod 21 arranged parallel to and in contact with the first pliers arm rod 11, and the end of the second pliers arm rod 21 is provided with a second clamping portion 22 that cooperates with the first clamping portion 12.
[0023] In some embodiments, the first pliers body 10 and the second pliers body 20 can be processed and manufactured using carbon steel, stainless steel, cast iron or aluminum alloy. Generally, the overall cross-sectional shape of the first pliers body 10 and the second pliers body 20 is rectangular (example in the figure), oval (not shown in the figure) or circular (not shown in the figure), and the corresponding cross-sectional shape of each independent pliers body is symmetrically distributed. It should be understood that the overall shape of the pliers body does not affect the functionality of the pliers body, and the cross-sectional shape is intended to enhance the appearance of the pliers body and the comfort of holding.
[0024] Furthermore, a clamp 23 is fixedly provided on one end of the second clamp arm 21 away from the second clamp portion 22, and the clamp 23 slides on the outer wall of the first clamp arm 11. A stop pressure plate 15 is provided on one end of the fitting surface between the first clamp arm 11 and the second clamp arm 21 close to the first clamp portion 12. A driver for driving the stop pressure plate 15 to move is provided inside the first clamp arm 11, and the driver is configured to drive the stop pressure plate 15 to move between the first position and the second position.
[0025] Since the first clamp arm rod 11 and the second clamp arm rod 21 are arranged parallel to each other and can slide with each other, the size between the first clamp arm rod 11 and the second clamp arm rod 22 (i.e., the size of the jaws) can be adjusted by the relative position of the sliding between the first clamp arm rod 11 and the second clamp arm rod 21. After the size of the jaws is adjusted, the relative position of the first clamp arm rod 11 and the second clamp arm rod 21 is fixed to achieve the fixation of the jaws.
[0026] Since the clamp 23 arranged at the end of the second clamp arm rod 21 slides on the outer wall of the first clamp arm rod 11, when the stop pressure plate 15 on the first clamp arm rod 11 presses the second clamp arm rod 21 outward, with the cooperation of the clamp 23, the second clamp arm rod 21 cannot move away from the first clamp arm rod 11, and the relative fixation of the position between the first clamp arm rod 11 and the second clamp arm rod 21 is achieved by the stop pressure plate 15.
[0027] When the stop pressure plate 15 is in the first position, the second clamp arm rod 21 and the first clamp arm rod 11 can slide relative to each other. At this time, the first clamp arm rod 11 and the second clamp arm rod 21 can slide between each other, and the position and size of the jaws can be adjusted arbitrarily. When the stop pressure plate 15 is in the second position, the stop pressure plate 15 vertically presses against the surface of the second clamp arm rod 21, so that the second clamp arm rod 21 and the first clamp arm rod 11 are relatively fixed. At this time, the relative position between the first clamp arm rod 11 and the second clamp arm rod 21 is locked. In this way, compared with the existing nut adjustment method, there is no transmission mechanism between the second clamp arm rod 21 and the first clamp arm rod 11 to limit the movement speed, so that the clamp arm rod can be fixed after the jaw reaches the set size, and the size of the jaw can be adjusted more quickly.
[0028] like Figure 2 As shown, in order to ensure that the driver can maintain stable pressure after driving the stop pressure plate 15 into place to avoid sliding between the first caliper arm rod 11 and the second caliper arm rod 21, the driver includes a first oil pump 40 fixedly arranged inside the first caliper arm rod 11, a second oil pump 50 fixedly arranged inside the handle 13, and a hydraulic oil pipe 60 for connecting the first oil pump 40 and the second oil pump 50.
[0029] Among them, the output shaft of the first oil pump 40 is fixedly connected to the stop pressure plate 15, and can drive the stop pressure plate 15 to move in a direction perpendicular to the sliding path of the second clamp arm rod 21. A handle 13 is fixedly arranged at one end of the first clamp arm rod 11 away from the first clamping part 12, and a second oil pump 50 is fixedly arranged inside the handle 13.
[0030] In some embodiments, in order to ensure the stability of the installation of the first oil pump 40 and the hydraulic oil pipe 60 to avoid errors during use, a slot for accommodating the first oil pump 40 is provided on the first caliper arm 11 corresponding to the stop pressure plate 15 and on the side away from the second caliper arm 21, and a cylinder cover plate 112 is provided on the first caliper arm 11 corresponding to the slot. The first oil pump 40 is fixedly packaged in the slot through the cylinder cover plate 112, and an oil pipe groove 111 is provided on the side surface of the first caliper arm 11 away from the second caliper arm 21. The hydraulic oil pipe 60 is placed in the oil pipe groove 111, and a cavity for accommodating the second oil pump 50 is provided inside the handle 13. The handle 13 can adopt a split screw structure to fix the second oil pump 50 inside the handle 13. In this way, it can be ensured that the oil pump and the pipeline will not malfunction due to interference from external factors during use.
[0031] Furthermore, a piston body 51 is provided inside the second oil pump 50, and an adjusting cap 14 for adjusting the position of the piston body 51 is rotatably installed at the tail end of the handle 13. The position of the piston body 51 in the second oil pump 50 is adjusted by the adjusting cap 14, so as to control the amount of oil in the first oil pump 40 and the second oil pump 50, and drive the stop pressure plate 15 to move between the first position and the second position.
[0032] In some embodiments, a screw rod 141 is fixedly provided at the middle position of the side of the adjusting cap 14 facing the second oil pump 50, and the second oil pump 50 is coaxially arranged with the screw rod 141, the screw rod 141 is perpendicular to the adjusting cap 14, and a linkage sleeve 511 is fixedly provided on the side of the piston body 51 facing the screw rod 141. The linkage sleeve 511 includes a connecting rod part and a ring part. The ring part is ringed on the outer side of the screw rod 141 and is transmission-connected to the screw rod 141. The connecting rod part is connected to the piston body 51. When the adjusting cap 14 rotates, the position of the piston body 51 in the second oil pump 50 is adjusted through the transmission of the screw rod 141 and the linkage sleeve 511.
[0033] Furthermore, in order to allow the second oil pump 50 to input a relatively small force on one side and the first oil pump 40 to output a relatively large force on the other side, the inner diameter of the second oil pump 50 is smaller than the inner diameter of the first oil pump 40, so that the adjustment cap 14 can be rotated more easily, and the stop pressure plate 15 can apply a greater pressure to the second caliper arm rod 21 to ensure that there is no slippage between the second caliper arm rod 21 and the stop pressure plate 15.
[0034] like Figure 2 As shown, in order to allow the first clamp arm rod 11 and the second clamp arm rod 21 to have a reset capability so as to facilitate accurate clamping on the outside of an object for locking and fixing during use, the first clamp arm rod 11 and the second clamp arm rod 21 are respectively provided with a first spring groove 110 and a second spring groove 210 on the fitting surfaces, and when the first clamping portion 12 abuts against the second clamping portion 22, the first spring groove 110 and the second spring groove 210 are symmetrically distributed along the fitting surface of the first clamp arm rod 11 and the second clamp arm rod 21, and springs 30 are installed in the first spring groove 110 and the second spring groove 210, so that there is elastic potential energy between the first clamp arm rod 11 and the second clamp arm rod 21 to bring the first clamping portion 12 and the second clamping portion 22 closer to each other.
[0035] In some embodiments, when relative displacement occurs between the first clamp arm rod 11 and the second clamp arm rod 21, that is, the second clamp arm rod 21 with the second clamp portion 22 moves upward to open the jaws. When the jaws are engaged on the outside of the object, the jaws are self-tightened under the action of the spring 30. At this time, by turning the adjustment cap 14 at the tail end of the handle 13, the first clamp arm rod 11 and the second clamp arm rod 21 can be locked and fixed, thereby ensuring that the jaws are of moderate size and maintain high precision.
[0036] Furthermore, the inner side of the clamp 23 has a clamp groove 230 for accommodating the first clamp arm rod 11, the inner wall of the clamp groove 230 is in contact with the outer wall of the first clamp arm rod 11, and when the stop pressure plate 15 is in the first position, the clamp 23 and the first clamp arm rod 11 can slide against each other, and when the stop pressure plate 15 is in the second position, the clamp 23 is tightly pressed against the surface of the first clamp arm rod 11.
[0037] By arranging a clamp 23 at the rear end of the second clamp arm rod 21, a certain distance is set between the clamp 23 and the stop pressure plate 15. The longer the distance is, the more stable the braking between the first clamp arm rod 11 and the second clamp arm rod 21 is. When in use, the stop pressure plate 15 pushes the first clamp arm rod 11 and the second clamp arm rod 21 away from each other, while the clamp 23 limits the movement between the first clamp arm rod 11 and the second clamp arm rod 21, thereby achieving a balanced state, which can fix the first clamp arm rod 11 and the second clamp arm rod 21 to each other.
[0038] In combination with the above embodiments, a pipe clamp consisting of a first clamp body 10 and a second clamp body 20 is provided, and the size of the jaws can be adjusted when the first clamp body 10 and the second clamp body 20 slide against each other. After adjustment, the first clamp body 10 and the second clamp body 20 are relatively fixed by hydraulic drive to achieve locking of the jaw size. In this way, the size of the jaws can be adjusted more quickly while ensuring the strength and accuracy of the pipe clamp.
[0039] like Figure 1 and Figure 2 As shown, the first clamping portion 12 is integrally formed at the end of the first clamp arm rod 11, and the second clamping portion 22 is integrally formed at the end of the second clamp arm rod 21. In this embodiment, the structural strength of the clamp body is higher, but it cannot be replaced specifically when the jaws are damaged or not suitable for working conditions.
[0040] like Figure 3 and Figure 4 As shown, the first clamping portion 12 is detachably arranged at the end of the first clamp arm rod 11, and the second clamping portion 22 is detachably arranged at the end of the second clamp arm rod 21. A first clamping shaft 121 is provided on the fitting surface between the first clamping portion 12 and the first clamp arm rod 11, and a first clamping groove 113 which is plugged and matched with the first clamping shaft 121 is provided at the end of the first clamp arm rod 11. A second clamping shaft 221 is provided on the fitting surface between the second clamping portion 22 and the second clamp arm rod 21, and a second clamping groove 211 which is plugged and matched with the second clamping shaft 221 is provided at the end of the second clamp arm rod 21.
[0041] In some embodiments, in order to ensure the stability of the first clamping portion 12 and the first clamp arm rod 11 after being socketed, and the stability of the second clamping portion 22 and the second clamp arm rod 21 after being socketed, a magnet is fixed to the end of the first clamping shaft 121 and the second clamping shaft 221, and a magnet that attracts each other is also fixed in the corresponding first clamping groove 113 and the second clamping groove 211, so as to improve the stability after socketing. It should be understood that the number of clamping shafts can be set to single or multiple, and the cross-sectional shape of the clamping shaft can be set to circular, rectangular or other geometric shapes, in order to ensure the connection strength between the clamping shaft and the clamping groove after being socketed.
[0042] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the end surface of the first clamping portion 12 includes a first toothed clamping surface 122, a first flexible clamping surface 122.1 and a first thin clamping surface 122.2, and the end surface of the second clamping portion 22 includes a second toothed clamping surface 222, a second flexible clamping surface 222.1 and a second thin clamping surface 222.2, wherein the width of the first toothed clamping surface 122 is equal to the width of the second toothed clamping surface 222, the width of the first thin clamping surface 122.2 is equal to the width of the second thin clamping surface 222.2, and the width of the first thin clamping surface 122.2 is smaller than the width of the first toothed clamping surface 122.
[0043] like Figure 1 , Figure 3 and Figure 4 As shown, the first embodiment is a combination of the first toothed clamping surface 122 and the second toothed clamping surface 222. In this embodiment, the first toothed clamping surface 122 and the second toothed clamping surface 222 have sufficient strength and a larger contact surface, which is suitable for disassembly and assembly of wider nuts.
[0044] like Figure 6 As shown, the cooperation of the first flexible clamping surface 122.1 and the second flexible clamping surface 222.1 is a second embodiment. In this embodiment, the clamping surface material can be rubber or plastic material, which is suitable for working conditions with high requirements on the surface of objects and can avoid damaging the pipe.
[0045] like Figure 5 As shown, the cooperation of the first thin clamping surface 122.2 and the second thin clamping surface 222.2 is a third embodiment. This embodiment is suitable for nut disassembly and assembly work in a smaller and narrower space.
[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0047] The above description of the implementation mode is not restrictive, and the drawings show only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.
Claims
1. An adjustable pipe clamp, characterized in that: include: A first pliers body (10), the first pliers body (10) comprising a first pliers arm rod (11) and a first clamping portion (12) arranged at an end of the first pliers arm rod (11); A second clamp body (20), the second clamp body (20) comprising a second clamp arm rod (21) arranged parallel to and in close contact with the first clamp arm rod (11), the end of the second clamp arm rod (21) being provided with a second clamping portion (22) cooperating with the first clamping portion (12); A clamp hoop (23) is fixedly provided on one end of the second clamp arm rod (21) away from the second clamping portion (22), and the clamp hoop (23) is slidably sleeved on the outer wall of the first clamp arm rod (11). A stop pressure plate (15) is provided on one end of the mating surface between the first clamp arm rod (11) and the second clamp arm rod (21) close to the first clamping portion (12). A driver is provided inside the first clamp arm rod (11), and the driver is configured to drive the stop pressure plate (15) to move between a first position and a second position. When the stop pressure plate (15) is in the first position, the second clamp arm rod (21) and the first clamp arm rod (11) can slide relative to each other. When the stop pressure plate (15) is in the second position, the second clamp arm rod (21) and the first clamp arm rod (11) are relatively fixed.
2. The adjustable pipe clamp according to claim 1, characterized in that: The driver comprises a first oil pump (40) fixedly arranged inside the first tong arm rod (11), the output shaft of the first oil pump (40) being fixedly connected to the stop pressure plate (15) and capable of driving the stop pressure plate (15) to move in a direction perpendicular to the sliding path of the second tong arm rod (21); A handle (13) is fixedly provided at one end of the first clamp arm (11) away from the first clamping portion (12), and a second oil pump (50) is fixedly provided inside the handle (13). The second oil pump (50) is connected to the first oil pump (40) via a hydraulic oil pipe (60), and a piston body (51) is provided inside the second oil pump (50). An adjusting cap (14) for adjusting the position of the piston body (51) is rotatably mounted on the rear end of the handle (13). The position of the piston body (51) in the second oil pump (50) is adjusted by the adjusting cap (14), so as to control the amount of oil in the first oil pump (40) and the second oil pump (50), and drive the stop plate (15) to move between the first position and the second position.
3. The adjustable pipe clamp according to claim 2, characterized in that: A slot for accommodating the first oil pump (40) is provided on the first caliper arm (11) at a position corresponding to the stop pressure plate (15) and away from the second caliper arm (21), and a cylinder cover plate (112) is provided on the first caliper arm (11) at a position corresponding to the slot. The first oil pump (40) is fixedly encapsulated in the slot via the cylinder cover plate (112). An oil pipe slot (111) is provided on a side surface of the first caliper arm (11) away from the second caliper arm (21), and the hydraulic oil pipe (60) is arranged in the oil pipe slot (111).
4. The adjustable pipe clamp according to claim 2, characterized in that: A screw rod (141) is fixedly provided at a middle position of a side of the adjusting cap (14) facing the second oil pump (50), the screw rod (141) being perpendicular to the adjusting cap (14), and a linkage sleeve (511) is fixedly provided on a side of the piston body (51) facing the screw rod (141), the linkage sleeve (511) being partially sleeved on the outside of the screw rod (141) and being transmission-connected to the screw rod (141), and when the adjusting cap (14) rotates, the position of the piston body (51) in the second oil pump (50) is adjusted through the transmission of the screw rod (141) and the linkage sleeve (511).
5. The adjustable pipe clamp according to claim 4, characterized in that: The second oil pump (50) is coaxially arranged with the screw rod (141), and the inner diameter of the second oil pump (50) is smaller than the inner diameter of the first oil pump (40).
6. The adjustable pipe clamp according to claim 1, characterized in that: A first spring groove (110) and a second spring groove (210) are respectively provided on the mating surfaces of the first clamp arm rod (11) and the second clamp arm rod (21); and when the first clamping portion (12) and the second clamping portion (22) are in contact, the first spring groove (110) and the second spring groove (210) are symmetrically distributed along the mating surfaces of the first clamp arm rod (11) and the second clamp arm rod (21); and springs (30) are installed in the first spring groove (110) and the second spring groove (210), so that there is elastic potential energy between the first clamp arm rod (11) and the second clamp arm rod (21) to bring the first clamping portion (12) and the second clamping portion (22) closer to each other.
7. The adjustable pipe clamp according to claim 1, characterized in that: The inner side of the clamp (23) has a clamp groove (230) for accommodating the first clamp arm rod (11); the inner wall of the clamp groove (230) is in contact with the outer wall of the first clamp arm rod (11); and when the stop pressure plate (15) is in the first position, the clamp (23) and the first clamp arm rod (11) can slide relative to each other; when the stop pressure plate (15) is in the second position, the clamp (23) is tightly pressed against the surface of the first clamp arm rod (11).
8. The adjustable pipe clamp according to claim 1, characterized in that: The first clamping portion (12) is integrally formed and arranged at the end of the first clamp arm rod (11), and the second clamping portion (22) is integrally formed and arranged at the end of the second clamp arm rod (21).
9. The adjustable pipe clamp according to claim 1, characterized in that: The first clamping portion (12) is detachably arranged on the end of the first clamp arm rod (11), and the second clamping portion (22) is detachably arranged on the end of the second clamp arm rod (21); a first clamping shaft (121) is provided on the mating surface between the first clamping portion (12) and the first clamp arm rod (11); a first clamping groove (113) pluggably matched with the first clamping shaft (121) is provided on the end of the first clamp arm rod (11); a second clamping shaft (221) is provided on the mating surface between the second clamping portion (22) and the second clamp arm rod (21); and a second clamping groove (211) pluggably matched with the second clamping shaft (221) is provided on the end of the second clamp arm rod (21).
10. The adjustable pipe clamp according to any one of claims 8 or 9, characterized in that: The end surface of the first clamping portion (12) comprises a first toothed clamping surface (122), a first flexible clamping surface (122.1) and a first thin clamping surface (122.2); the end surface of the second clamping portion (22) comprises a second toothed clamping surface (222), a second flexible clamping surface (222.1) and a second thin clamping surface (222.2); wherein the width of the first toothed clamping surface (122) is equal to the width of the second toothed clamping surface (222); the width of the first thin clamping surface (122.2) is equal to the width of the second thin clamping surface (222.2); and the width of the first thin clamping surface (122.2) is smaller than the width of the first toothed clamping surface (122).