Telescopic portable underground pipeline detection clamp

Abstract

The utility model relates to the technical field of pipeline detection, and discloses a telescopic portable underground pipeline detection clamp which comprises a clamp body, a handle assembly, a telescopic rod and a pay-off assembly. The clamp comprises a first clamp arm and a second clamp arm, and an emission line is arranged at the rear end of the second clamp arm; the handle assembly adjusts the included angle or distance between the handle and the telescopic rod. The two ends of the telescopic rod are fixedly connected with the fixed end of the handle assembly and the rear end of the first clamp arm respectively, and a mounting groove is formed in the telescopic rod. The pay-off assembly comprises a control line, a pay-off wheel, a transmission part and a grab handle, the pay-off assembly unrolls or rolls the control line connected with the second clamp arm through the pay-off wheel arranged in the mounting groove, and the grab handle controls the pay-off wheel to rotate through the transmission part; according to the detection clamp, after the length of the telescopic rod is changed, the grab handle is rotated to enable the clamp arms to complete the clamping action, and therefore the problem that in the prior art, after the length of the clamp body of the detection clamp is changed, detection work cannot be directly carried out is solved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline detection technology, and in particular to a retractable portable underground pipeline detection clamp. Background Technology

[0002] The investigation of concealed metal pipelines mainly involves finding the location and depth of underground pipelines without excavation. Currently, pipeline detectors are generally used for this purpose. The working methods of pipeline detectors include: direct connection method, induction method, and clamp method. The clamp method is suitable for detecting power lines and communication lines. Workers use special clamps to clamp the exposed cable, apply electromagnetic signals, and use a receiver to track and detect it.

[0003] Since exposed cables are usually located in underground shafts, when the cables are buried at a great depth, it is necessary for inspection personnel to crawl into the shaft to apply signals to the cables using conventional short-handled clamps. Because the shafts are closed year-round, toxic gases can easily be generated. Therefore, the process of climbing down into the shaft and the harmful gases inside the shaft pose a serious threat to the life safety of the inspection personnel.

[0004] Patent application CN202021922262.0 discloses a detachable extension rod underground pipeline detection clamp. It uses a movable handle and an extension rod hinged together to achieve the extension and retraction of the detection clamp. However, the detection clamp in this patent uses the lever principle to operate the control cable. The narrow internal space of the clamp body limits the adjustment range of the control cable. When the length of the extension rod needs to be changed, it is often necessary to manually replace the control cable with a different specification to keep the control cable in a taut state. Therefore, the detection clamp in this patent has limited adaptability and can easily affect the work efficiency of the inspection personnel. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a telescopic portable underground pipeline detection clamp, which solves the problem that the detection clamp cannot be directly used for detection work after the length of the clamp body is changed.

[0006] To address the aforementioned technical problems, this utility model provides a retractable portable underground pipeline detection clamp, the detection clamp comprising:

[0007] Clamp: The clamp includes a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm are rotatably connected at the middle, and the rear end of the second clamp arm is provided with a transmission line for transmitting a detection signal;

[0008] Telescopic rod; the front end of the telescopic rod is connected to the rear end of the first clamp arm, and the telescopic rod has an installation groove that penetrates the front end face of the telescopic rod;

[0009] A wire feeding assembly; the wire feeding assembly includes a control line, a wire feeding reel, and a handle. The wire feeding reel is disposed in the mounting groove and is located at the rear end of the telescopic rod. The wire feeding reel is rotatably connected to the telescopic rod. One end of the control line is wound onto the wire feeding reel. The length of the control line is greater than the maximum extension length of the telescopic rod. The other end of the control line extends from the front end face of the mounting groove and is connected to the rear end of the second clamp arm. One end of the handle is rotatably inserted through the side wall of the telescopic rod. One end of the handle is located on the outside of the telescopic rod, and the other end is located in the mounting groove and connected to the wire feeding reel.

[0010] A handle assembly, the front end of which is connected to the rear end of the telescopic rod;

[0011] Rotating the handle can drive the feed wheel to rotate, thereby unwinding or rewinding the control line, causing the second clamp arm to open and close relative to the first clamp arm.

[0012] As an optional solution, the handle assembly includes: a handle and a rotating subassembly;

[0013] The rear end of the rotating sub-assembly is rotatably connected to the handle, and the rear end of the telescopic rod is connected to the front end of the rotating sub-assembly.

[0014] As an optional solution, the handle includes a handle body and a first screw;

[0015] One end of the handle is fitted with a handle sleeve, and the other end face of the handle has a first threaded connection groove. The handle and the first threaded connection groove are coaxial, and the handle and the first screw are threadedly connected through the first threaded connection groove.

[0016] As an optional solution, a limiting head is also provided at the end of the first screw away from the shank, and the thread diameter of the first screw is smaller than the diameter of the limiting head at its maximum position.

[0017] As an optional solution, the rotating sub-assembly includes a rotating rod and a fixed rod;

[0018] The rotating rod has a screw hole, and the rotating rod is fixedly connected to the handle body through the screw hole. The rotating rod is rotatably disposed at the rear end of the fixed rod. The rotation axis of the rotating rod is the same straight line as the axis of the rotating rod, and the rotation axis of the rotating rod is perpendicular to the axis of the fixed rod.

[0019] The front end of the fixed rod is fixedly connected to the rear end of the telescopic rod.

[0020] As an optional solution, the rear end of the first clamp arm is detachably connected to the front end of the telescopic rod, and the second clamp arm is detachably connected to the control line.

[0021] As an optional solution, the rear end of the first clamp arm is threadedly connected to the front end of the telescopic rod;

[0022] A hook is provided at one end of the control line extending from the mounting groove, and a hanging ring is provided at the rear end of the second clamp arm, with the hook hooked into the hanging ring.

[0023] As an optional solution, a second screw is provided at the front end of the telescopic rod;

[0024] The rear end face of the second clamp arm has a through-hole second threaded connection groove, and the second clamp arm and the telescopic rod are fixedly connected through the second threaded connection groove and the second screw.

[0025] As an optional solution, the telescopic rod includes multiple rods that slide sequentially from back to front, with adjacent rods being snapped together by elastic buckles.

[0026] Compared with the prior art, the retractable portable underground pipeline detection clamp of this utility model has the following advantages: the control line for controlling the opening and closing of the second clamp arm is unwound by a wire feeding wheel, and the wire feeding timing of the wire feeding wheel is controlled by a handle driven by a transmission wheel. When the telescopic rod fixedly connected to the first clamp arm is extended or retracted, the length of the control line can be changed by rotating the handle in conjunction with the length of the telescopic rod, eliminating the need for manual replacement of control lines of different specifications. This solves the problem in the prior art that detection clamps cannot directly carry out detection work after changing the length of the clamp body. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of the retractable portable underground pipeline detection clamp of this utility model;

[0028] Figure 2 This is a partial schematic diagram of the retractable portable underground pipeline detection clamp of this utility model;

[0029] Figure 3 This utility model is in Figure 2 A magnified view of a section at point A;

[0030] Figure 4 This is a cross-sectional view of the retractable portable underground pipeline detection clamp of this utility model;

[0031] Figure 5 This utility model is in Figure 4 A magnified view of section B;

[0032] Figure 6 This is a schematic diagram of the retractable portable underground pipeline detection clamp of this utility model.

[0033] In the diagram, 1. Clamp; 101. First clamp arm; 1011. Second threaded connection groove; 102. Second clamp arm; 1021. Hanging ring; 1022. Transmitting wire; 2. Telescopic rod; 201. Rod body; 202. Mounting groove; 203. Second screw; 3. Wire feeding assembly; 301. Wire feeding reel; 302. Control line; 3021. Hook; 303. Handle; 3031. Handle sleeve; 304. Ball bearing; 4. Handle assembly; 401. Handle body; 4011. Handle sleeve; 4012. First threaded connection groove; 4013. First screw; 4014. Limit head; 402. Rotary sub-assembly; 4021. Rotating rod; 4022. Fixing rod. Detailed Implementation

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0035] like Figures 1 to 6 As shown, this utility model provides a retractable portable underground pipeline detection clamp, which includes: clamp 1, handle assembly 4, telescopic rod 2, cable laying assembly 3 and telescopic rod 2.

[0036] The clamp 1 includes a first clamp arm 101 and a second clamp arm 102. The first clamp arm 101 and the second clamp arm 102 are rotatably connected at their middle parts. The first clamp arm 101 and the second clamp arm 102 are rotatably connected by a rotating shaft. The rotation axis of the first clamp arm 101 and the second clamp arm 102 is the axis of the rotating shaft. The rear end of the second clamp arm 102 is provided with a transmission line 1022 for transmitting detection signals.

[0037] The front end of the telescopic rod 2 is fixedly connected to the first clamp arm 101. The telescopic rod 2 has an installation groove 202 inside. The rear end of the installation groove 202 is located at the position of the telescopic rod 2 for the operator to operate. The installation groove 202 is coaxial with the telescopic rod 2.

[0038] The wire feeding assembly 3 includes a control line 302, a wire feeding reel 301, a transmission component, and a handle 303. The wire feeding reel 301 and the transmission component are disposed within the mounting groove 202, and the wire feeding reel 301 is located at the rear end of the telescopic rod 2. The wire feeding reel 301 is rotatably connected to the telescopic rod 2, and the rotation axis of the wire feeding reel 301 is perpendicular to the axis of the telescopic rod 2. One end of the control line 302 is wound onto the wire feeding reel 301, and the length of the control line 302 is greater than the maximum extension length of the telescopic rod 2. The other end of the control line 302 extends from the front end face of the mounting groove 202 and connects to the rear end of the second clamp arm 102. One end of the handle 303 is rotatably inserted through the side wall of the telescopic rod 2. One end of the handle 303 is located on the outside of the telescopic rod 2 and is fitted with a handle sleeve 3031. A ball bearing 304 is also installed inside the reel 301. The rotation axis of the ball bearing is the same as the rotation axis of the reel 301. The other end of the handle 303 is fixedly connected to the ball bearing 304. The rotation axis of the handle 303 is the same as the rotation axis of the reel 301. The handle 303 drives the ball bearing 304 to rotate, thereby driving the reel 301 to rotate. The ball bearing 304 increases the service life of the reel 301.

[0039] The handle assembly 4, the front end of which is connected to the rear end of the telescopic rod 2.

[0040] Rotating the handle 303 can drive the unwinding reel 301 to rotate, thereby unwinding or rewinding the control line 302. The unwinding or rewinding direction of the control line 302 is parallel to the axis of the telescopic rod 2. The control line 302 can be in a taut state when the handle 303 is unwinding or rewinding. At this time, further rewinding the control line 302 can pull the second clamp arm 102, thereby causing the second clamp arm 102 to open and close relative to the first clamp arm 101.

[0041] Based on this, after the telescopic rod 2 connected to the first clamp arm 101 of the clamp 1 extends and retracts, it extends the clamp 1 into the detection position. The control line 302, which controls the opening and closing of the second clamp arm 102, is wound onto the feed reel 301. The feed reel 301 rotates under the drive of the handle 303 and winds up and down the control line 302 to make the control line 302 taut. At this time, the feed reel 301 is further controlled to wind up so that the control line 302 pulls the second clamp arm 102 to realize the clamping action of the clamp 1. Therefore, the control line 302 can be matched with the length of the telescopic rod 2 by the unwinding of the feed reel 301 without manual replacement, thus solving the problem in the prior art that the detection clamp cannot directly carry out detection work after changing the length of the clamp body.

[0042] Furthermore, such as Figure 2 and Figure 3 As shown, the handle and rotating subassembly 402.

[0043] The rear end of the rotating sub-assembly 402 is rotatably connected to the handle, and the rotation axis of the rear end of the rotating sub-assembly 402 is perpendicular to the handle. The rear end of the telescopic rod 2 is connected to the front end of the rotating sub-assembly 402. The rotating sub-assembly 402 can adjust the angle between the handle and the telescopic rod 2 to facilitate use by the operator.

[0044] Furthermore, such as Figure 1 and Figure 5 As shown, the handle includes a handle body 401 and a first screw 4013.

[0045] One end of the handle 401 is fitted with a handle sleeve 4011, and the other end face of the handle 401 has a first threaded connection groove 4012. The handle 401 and the first threaded connection groove 4012 are coaxial. The handle 401 and the first screw 4013 are threadedly connected through the first threaded connection groove 4012. The first threaded connection groove 4012 makes the distance between the handle 401 and the telescopic rod 2 adjustable, so that the operator can adjust the position of the probe clamp according to personal usage habits.

[0046] Furthermore, such as Figure 2 and Figure 3 As shown, a limiting head 4014 is also provided at the end of the first screw 4013 away from the shank 401. The first screw 4013 is fixedly connected to the limiting head 4014. The thread diameter of the first screw 4013 is smaller than the diameter of the limiting head 4014 at its maximum position. That is, the thread diameter of the first threaded connecting groove 4012, which is threadedly connected to the first screw 4013, is also smaller than the diameter of the limiting head 4014 at its maximum position. Therefore, before the first screw 4013 is fully inserted into the first threaded groove, the limiting head 4014 will abut against the end face of the first threaded connecting groove 4012, so that the first screw 4013 cannot be screwed in further, thus avoiding the difficulty in removing the first screw 4013 after it is fully inserted into the first threaded connecting groove 4012.

[0047] Furthermore, such as Figure 2 and Figure 3 As shown, the rotating sub-assembly 402 includes a rotating rod 4021 and a fixed rod 4022;

[0048] The rotating rod 4021 has a screw hole that penetrates the body of the rotating rod 4021. The screw hole allows the first screw 4013 to pass through the middle. The rotating rod 4021 and the handle 401 are fixedly connected through the screw hole. The rotating rod 4021 is rotatably disposed at the rear end of the fixed rod 4022. The rotation axis of the rotating rod 4021 is the same as the axis of the rotating rod 4022. The rotation axis of the rotating rod 4021 is perpendicular to the axis of the fixed rod 4022. When the rotating rod 4021 rotates, it drives the first screw 4013 and the handle 401 to rotate. At this time, the rotation axis of the rotating rod 4021 is the rotation axis of the rotating sub-assembly 402.

[0049] The front end of the fixed rod 4022 is fixedly connected to the rear end of the telescopic rod 2. The front end of the fixed rod 4022 is the front end of the rotating sub-assembly 402. The rotating rod 4021 and the fixed rod 4022 can adjust the angle between the handle 401 for workers to pick up and the telescopic rod 2, so as to facilitate workers' use.

[0050] Furthermore, such as Figure 1 and Figure 6 As shown, the rear end of the first clamp arm 101 is threadedly connected to the front end of the telescopic rod 2.

[0051] The control line 302 has a hook 3021 at one end extending out of the mounting groove 202, and the rear end of the second clamp arm 102 has a hanging ring 1021, with the hook 3021 hooked into the hanging ring 1021.

[0052] The shape of the hook 3021 is not further limited here. The hook 3021 can be a common J-type hook 3021, S-type hook 3021, and U-type hanging ring 1021, etc. The hook 3021 and the hanging ring 1021 cooperate to make the control line 302 and the second clamp arm 102 detachably connected together.

[0053] When the probe clamp is working in an environment where the telescopic rod 2 does not need to be extended, the staff can directly remove the hook 3021 on site and operate the clamp 1 by hand, thus enabling the probe clamp to adapt to more working conditions.

[0054] Furthermore, such as Figure 1 and Figure 6 As shown, a second screw 203 is provided at the front end of the telescopic rod 2. The axis of the second screw 203 is parallel to the axis of the telescopic rod 2, and the end of the second screw 203 that is not fixed to the telescopic rod 2 faces the second clamp arm 102.

[0055] The rear end face of the second clamp arm 102 has a through-hole second threaded connection groove 1011, and the second screw 203 can be screwed into the second threaded connection groove 1011. The second clamp arm 102 and the telescopic rod 2 are fixedly connected through the second threaded connection groove 1011 and the second screw 203. The second screw 203 and the second threaded connection groove 1011 make the telescopic rod 2 and the clamp 1 more secure. The threaded connection fixation method allows the clamp 1 to be removed in time when it needs to be replaced, reducing the difficulty of replacing the clamp 1.

[0056] Furthermore, such as Figure 1 and Figure 3 As shown, the telescopic rod 2 includes a plurality of rods 201 that are slidably connected from back to front, and adjacent rods 201 are connected by elastic buckles.

[0057] Each of the aforementioned rods 201 includes a plurality of telescopic holes, which penetrate the inner and outer walls of the rod 201. The axes of the telescopic holes are all perpendicular to the axis of the rod 201. Some telescopic holes are located at the front end of the rod 201, and others are located at the rear end of the rod 201. The telescopic holes located at the rear end of the preceding rod 201 correspond to the telescopic holes located at the front end of the following rod 201, and the corresponding telescopic holes are connected by elastic snap-fit. The overall length of the rod 201 can be changed by increasing or decreasing the number of rods 201, so that the operator can use the probe clamp to inspect the pipeline from a safe position.

[0058] Furthermore, this embodiment is not shown in the accompanying drawings. Each of the rods 201 includes at least two sliding tracks, and each sliding track includes a sliding block, a sliding groove, and a fixing bolt. The sliding groove penetrates the inner and outer walls of the rod 201, and the length direction of the sliding groove is parallel to the length direction of the rod 201. The front end and rear end of the sliding groove do not penetrate the front end face and rear end face of the rod 201. The sliding block located in the preceding rod 201 is fixedly disposed on the side wall of the rod 201. The sliding block is slidably connected to the sliding groove of the following rod 201, and one end of the sliding block away from the side wall of the following rod 201 extends out from the corresponding sliding groove. The sliding block drives the rod 201 fixedly connected to it to slide. The fixing bolt is disposed at the end of the sliding block that extends out of the sliding groove. The diameter of the fixing bolt is larger than the distance between the two groove walls of the sliding groove. The fixing bolt can fasten the sliding block to the side wall of the following rod 201.

[0059] The working process of this utility model is as follows: First, the angle between the handle and the telescopic rod 2 is adjusted using the rotating rod 4021. Then, the distance between the handle and the telescopic rod 2 is adjusted using the first screw 4013. After the operator has adjusted the handle, the clamp 1 is first inserted into the pipeline position using the telescopic rod 2. Then, the control line 302 is unwound or wound up using the handle 303. When the control line 302 is taut, the control line 302 is pulled further to open the second clamp arm 102, clamp the pipeline to be tested, and perform the test.

[0060] In summary, this utility model provides a telescopic portable underground pipeline detection clamp. The clamp utilizes a telescopic rod 2 to extend the depth that the clamp 1 can reach. The control line 302 is unwound or wound up by a wire reel 301 controlled by a handle 303. The length of the control line 302 is greater than the maximum strength of the telescopic rod 2. Therefore, the control line 302 can pull the second clamp arm 102 when the telescopic rod 2 is extended to different lengths, thereby solving the problem in the prior art that the detection clamp cannot directly carry out detection work after changing the length of the clamp body.

[0061] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A retractable, portable underground pipeline detection clamp, characterized in that, The probe clamp includes: Clamp: The clamp includes a first clamp arm and a second clamp arm, the first clamp arm and the second clamp arm are rotatably connected at the middle, and the rear end of the second clamp arm is provided with a transmission line for transmitting a detection signal; Telescopic rod; the front end of the telescopic rod is connected to the rear end of the first clamp arm, and the telescopic rod has an installation groove that penetrates the front end face of the telescopic rod; A wire feeding assembly; the wire feeding assembly includes a control line, a wire feeding reel, and a handle. The wire feeding reel is disposed in the mounting groove and is located at the rear end of the telescopic rod. The wire feeding reel is rotatably connected to the telescopic rod. One end of the control line is wound onto the wire feeding reel. The length of the control line is greater than the maximum extension length of the telescopic rod. The other end of the control line extends from the front end face of the mounting groove and is connected to the rear end of the second clamp arm. One end of the handle is rotatably inserted through the side wall of the telescopic rod. One end of the handle is located on the outside of the telescopic rod, and the other end is located in the mounting groove and connected to the wire feeding reel. A handle assembly, the front end of which is connected to the rear end of the telescopic rod; Rotating the handle can drive the feed wheel to rotate, thereby unwinding or rewinding the control line, causing the second clamp arm to open and close relative to the first clamp arm.

2. The retractable portable underground pipeline detection clamp according to claim 1, characterized in that, The handle assembly includes: a handle and a rotating sub-assembly; The rear end of the rotating sub-assembly is rotatably connected to the handle, and the rear end of the telescopic rod is connected to the front end of the rotating sub-assembly.

3. The retractable portable underground pipeline detection clamp according to claim 2, characterized in that, The handle includes a handle body and a first screw; One end of the handle is fitted with a handle sleeve, and the other end face of the handle has a first threaded connection groove. The handle and the first threaded connection groove are coaxial, and the handle and the first screw are threadedly connected through the first threaded connection groove.

4. The retractable portable underground pipeline detection clamp according to claim 3, characterized in that, The end of the first screw away from the shank is also provided with a limiting head, and the thread diameter of the first screw is smaller than the diameter of the limiting head at its maximum position.

5. The retractable portable underground pipeline detection clamp according to claim 3, characterized in that, The rotating sub-assembly includes a rotating rod and a fixed rod; The rotating rod has a screw hole, and the rotating rod is fixedly connected to the handle body through the screw hole. The rotating rod is rotatably disposed at the rear end of the fixed rod. The rotation axis of the rotating rod is the same straight line as the axis of the rotating rod, and the rotation axis of the rotating rod is perpendicular to the axis of the fixed rod. The front end of the fixed rod is fixedly connected to the rear end of the telescopic rod.

6. The retractable portable underground pipeline detection clamp according to claim 1, characterized in that, The rear end of the first clamp arm is detachably connected to the front end of the telescopic rod, and the second clamp arm is detachably connected to the control line.

7. The retractable portable underground pipeline detection clamp according to claim 6, characterized in that, The rear end of the first clamp arm is threadedly connected to the front end of the telescopic rod; A hook is provided at one end of the control line extending from the mounting groove, and a hanging ring is provided at the rear end of the second clamp arm, with the hook hooked into the hanging ring.

8. The retractable portable underground pipeline detection clamp according to claim 7, characterized in that, The front end of the telescopic rod is provided with a second screw; The rear end face of the second clamp arm has a through-hole second threaded connection groove, and the second clamp arm and the telescopic rod are fixedly connected through the second threaded connection groove and the second screw.

9. The retractable portable underground pipeline detection clamp according to any one of claims 1-8, characterized in that, The telescopic rod includes multiple rods that slide sequentially from back to front, and adjacent rods are connected by elastic buckles.

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