Pipe clamping device for pipe displacement and optical cable strain verification

Abstract

The utility model discloses a pipeline clamping device for pipeline displacement and optical cable strain verification relates to optical cable performance verification technical field, the utility model discloses a ground rail trolley, conical top pipe mechanism, slip frame and multi -claw clamping mechanism, and conical top pipe mechanism includes the frame, and the frame front side annular fixed has a plurality of top pipe edges, and the top pipe edge is composed of straight edge section and bevel section with the arc cross section, and straight edge section is connected on the frame, and the bevel section of a plurality of top pipe edges forms the conical pipe portion, the utility model discloses the design through the conical top pipe structure of back and forth removal, and the conical pipe end formed through the bevel section can carry out the concentric positioning and the pre -fixing of position to pipeline, guarantee the subsequent clamping point clamping force supply evenness problem, avoid the pipeline damage position problem that the clamping point uneven stress appears, ensure the stability of subsequent verification, and again through multi -claw clamping mechanism can steady clamping, avoid the problem that the conical pipe end and pipeline contact surface are too small and cause the poor stability.

Description

Technical Field

[0001] This utility model belongs to the field of optical cable performance verification technology, and in particular relates to a pipe clamping device for verifying pipe displacement and optical cable strain. Background Technology

[0002] To verify whether the optical cable can detect the normal displacement of the pipeline and to determine the accuracy of its detection values, a verification system is required. The verification system uses two clamping devices to clamp both ends of the pipeline and sets up a jacking device on the circumference of the pipeline. The actual expansion and contraction values ​​of the pipeline are compared with the detection data of the optical cable through the jacking device, thereby verifying the accuracy of the data.

[0003] Most existing pipe clamping devices are multi-jaw chuck structures or V-roller clamping structures. During clamping, they may cause displacement or damage to the pipe, resulting in deviations in the verification of optical cables. At the same time, they cannot be aligned during clamping, and uneven force may occur at the clamping points. If the force at a certain point is too large, the pipe strain may be too large or deformed. For example, clamping points that need to bear the weight of the pipe may be too large compared to other clamping points. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe clamping device for verifying pipe displacement and optical cable strain. Through the design of a tapered jacking pipe structure that can move back and forth, the tapered pipe end composed of inclined sections can concentrically position and pre-fix the position of the pipe, ensuring uniform clamping force supply at the subsequent clamping points and avoiding pipe damage caused by uneven force at the clamping points, thus ensuring the stability of subsequent verification. Furthermore, the multi-claw clamping mechanism can stably clamp the pipe, avoiding the problem of poor stability caused by an insufficient contact area between the tapered pipe end and the pipe.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a pipe clamping device for verifying pipe displacement and optical cable strain, including a ground rail trolley, a conical pipe jacking mechanism, a sliding frame and a multi-jaw clamping mechanism; The conical jacking mechanism includes a frame, with several jacking pipe sides fixed in a ring on the front side of the frame. Each jacking pipe side is composed of a straight side segment and a sloping side segment with an arc-shaped cross section. The straight side segment is connected to the frame, and the sloping side segments of the several jacking pipe sides form a conical pipe section. The frame is fixed to the top of the ground rail trolley, and several through holes are provided at the edge of the frame. A hydraulic cylinder is fixed to the back of the frame. The sliding frame includes a ring-shaped sliding sleeve, and a number of guide posts that slide in cooperation with the through opening are fixed on the back of the sliding sleeve. An inner spindle is provided at the center of the sliding frame, and the tail end of the inner spindle is fixed to the end of the telescopic rod of the oil cylinder. The multi-jaw clamping mechanism is composed of several sub-clamping bodies, which are arranged between the sliding sleeve and the inner mandrel, and the several sub-clamping bodies are staggered with several top pipe edges. The assembly clamp includes a screw, a guide rod, and a clamping edge. The screw and guide rod are fixed between the sliding sleeve and the inner mandrel. The middle part of the clamping edge is sleeved outside the screw and threadedly connected to the screw. The tail end of the clamping edge is fixed with a guide sleeve sleeved outside the guide rod. The front end of the clamping edge extends beyond the sliding sleeve and is provided with a clamping section. A drive mechanism is fixed to the circumferential side of the inner core shaft, and the screws of several of the sub-assembly clamps are connected to the drive mechanism through a transmission mechanism.

[0006] Furthermore, the transmission mechanism includes an external gear ring, which is rotatably mounted on the circumferential side of the inner core shaft via a slewing bearing. A conical gear ring is provided on one side of the external gear ring, and a conical gear that meshes with the conical gear ring is provided at one end of the screw near the inner core shaft.

[0007] Furthermore, the drive mechanism is a motor reducer, and the output end of the drive mechanism is fixed with an output gear that meshes with the external gear ring.

[0008] Furthermore, a thin-film pressure sensor is integrated within the clamping section.

[0009] Furthermore, the ground rail trolley is equipped with overload protection, which is a mechanical shear pin or an electromagnetic clutch.

[0010] Furthermore, a connecting ring is fixed between the tail ends of several of the guide posts.

[0011] This utility model has the following beneficial effects: 1. This utility model, through the design of a tapered jacking pipe structure that can move back and forth, can concentrically position and pre-fix the pipe by using the tapered pipe end composed of inclined sections, ensuring uniform clamping force supply at subsequent clamping points and avoiding pipe damage caused by uneven force at clamping points, thus ensuring the stability of subsequent verification. Furthermore, the multi-claw clamping mechanism can stably clamp the pipe, avoiding the problem of poor stability caused by an insufficient contact area between the tapered pipe end and the pipe.

[0012] 2. This utility model, through the design of a multi-jaw clamping mechanism, has a larger clearance space compared to a multi-jaw chuck structure, and can be used in conjunction with the jacking pipe edge that makes up the conical jacking pipe mechanism. At the same time, it has a larger adjustment distance, making it suitable for use with a wider range of different specifications of pipes and improving its applicability.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a pipe clamping device for verifying pipe displacement and optical cable strain according to the present invention. Figure 2 This is a schematic diagram of a tapered pipe jacking mechanism; Figure 3 This is a schematic diagram of the sliding frame and the multi-jaw clamping mechanism. Figure 4 This is a schematic diagram of the multi-jaw clamping mechanism; The attached diagram lists the components represented by each number as follows: 1-Ground rail trolley, 2-Conical pipe jacking mechanism, 3-Sliding frame, 4-Separate assembly clamp, 201-Frame, 202-Pipe jacking side, 203-Straight side section, 204-Beveled side section, 205-Through opening, 206-Hydraulic cylinder, 301-Sliding sleeve, 302-Guide post, 303-Inner spindle, 304-Drive mechanism, 305-Connecting ring, 401-Screw, 402-Guide rod, 403-Clamping side, 404-Guide sleeve, 405-Clamping section, 406-External gear ring, 407-Conical gear ring, 408-Conical gear, 409-Output gear. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 As shown, this utility model is a pipe clamping device for verifying pipe displacement and optical cable strain, including a ground rail trolley 1, a conical pipe jacking mechanism 2, a sliding frame 3, and a multi-claw clamping mechanism. The tapered pipe jacking mechanism 2 includes a frame 201. Several pipe jacking edges 202 are fixed in a ring shape on the front side of the frame 201. Each pipe jacking edge 202 is composed of a straight edge section 203 and a sloping edge section 204 with an arc-shaped cross section. The straight edge section 203 is connected to the frame 201, and the sloping edge sections 204 of the several pipe jacking edges 202 form a tapered pipe section. The frame 201 is fixed to the top of the ground rail trolley 1. Several through holes 205 are provided at the edge of the frame 201. A hydraulic cylinder 206 is fixed to the back of the frame 201. The sliding frame 3 includes a ring-shaped sliding sleeve 301. Several guide posts 302 that slide in cooperation with the through opening 205 are fixed on the back of the sliding sleeve 301. An inner core shaft 303 is provided at the axis of the sliding frame 3. The tail end of the inner core shaft 303 is fixed to the end of the telescopic rod of the oil cylinder 206. The multi-jaw clamping mechanism is composed of several sub-clamping bodies 4, which are arranged between the sliding sleeve 301 and the inner spindle 303. The several sub-clamping bodies 4 are staggered with several top pipe edges 202. The assembly clamp 4 includes a screw 401, a guide rod 402, and a clamping edge 403. The screw 401 and the guide rod 402 are fixed between the sliding sleeve 301 and the inner spindle 303. The middle part of the clamping edge 403 is sleeved outside the screw 401 and threadedly connected to the screw 401. The tail end of the clamping edge 403 is fixed with a guide sleeve 404 sleeved outside the guide rod 402. The front end of the clamping edge 403 extends beyond the sliding sleeve 301 and is provided with a clamping section 405. A drive mechanism 304 is fixed to the circumferential side of the inner mandrel 303, and a number of screws 401 of the sub-assembly clamps 4 are connected to the drive mechanism 304 through a transmission mechanism.

[0018] Among them, such as Figure 3-4 As shown, the transmission mechanism includes an external gear ring 406, which is rotatably mounted on the circumferential side of the inner spindle 303 via a slewing bearing. A conical gear ring 407 is provided on one side of the external gear ring 406, and a bevel gear 408 that meshes with the conical gear ring 407 is provided at one end of the screw 401 near the inner spindle 303.

[0019] Among them, such as Figure 3-4 As shown, the drive mechanism 304 is a motor reducer, and the output end of the drive mechanism 304 is fixed with an output gear 409 that meshes with the external gear ring 406.

[0020] The clamping section 405 integrates a thin-film pressure sensor.

[0021] The ground rail trolley 1 is equipped with overload protection, which is either a mechanical shear pin or an electromagnetic clutch.

[0022] Among them, such as Figure 1 and Figure 3 As shown, a connecting ring 305 is fixed between the tail ends of several guide posts 302.

[0023] The working principle of this utility model is as follows: The conical jacking mechanism 2 is driven by the ground rail trolley 1 to move towards the end of the pipe. The inclined side section 204 can guide the pipe. When all the inclined side sections 204 in the jacking pipe side 202 are inserted into the end of the pipe, they can play a concentric positioning role. Subsequently, the sub-assembly clamp 4 is driven by the hydraulic cylinder 206 to move towards the pipe. During the movement, the sub-assembly clamp 4 passes through the gap between the two jacking pipe sides 202. When the sliding sleeve 301 approaches the end of the pipe, the hydraulic cylinder 206 stops driving. The drive mechanism 304 drives the external gear ring 406, the conical gear ring 407 and the bevel gear 408 to drive all the screws 401 to rotate synchronously, thereby driving the clamping side 403 to move towards the inner wall of the pipe. The pressure provided by the clamping side 403 can clamp and reinforce the pipe.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pipe clamping device for verifying pipe displacement and optical cable strain, characterized in that: It includes a ground rail trolley (1), a conical pipe jacking mechanism (2), a sliding frame (3), and a multi-jaw clamping mechanism; The conical jacking mechanism (2) includes a frame (201). The front side of the frame (201) is fixed with several jacking pipe edges (202) in a ring shape. The jacking pipe edge (202) is composed of a straight edge segment (203) with an arc cross section and a sloping edge segment (204). The straight edge segment (203) is connected to the frame (201). The sloping edge segments (204) of the several jacking pipe edges (202) form a conical pipe section. The frame (201) is fixed on the top of the ground rail trolley (1), and several through holes (205) are provided at the edge of the frame (201). A hydraulic cylinder (206) is fixed on the back of the frame (201). The sliding frame (3) includes a ring-shaped sliding sleeve (301), and a number of guide posts (302) that slide in cooperation with the through opening (205) are fixed on the back of the sliding sleeve (301). An inner spindle (303) is provided at the axis of the sliding frame (3), and the tail end of the inner spindle (303) is fixed to the end of the telescopic rod of the oil cylinder (206). The multi-jaw clamping mechanism is composed of several sub-clamping bodies (4), which are arranged between the sliding sleeve (301) and the inner mandrel (303). The several sub-clamping bodies (4) are staggered with several top pipe edges (202). The assembly clamp (4) includes a screw (401), a guide rod (402), and a clamping edge (403). The screw (401) and the guide rod (402) are fixed between the sliding sleeve (301) and the inner mandrel (303). The middle part of the clamping edge (403) is sleeved outside the screw (401) and threadedly connected to the screw (401). The tail end of the clamping edge (403) is fixed with a guide sleeve (404) sleeved outside the guide rod (402). The front end of the clamping edge (403) extends beyond the sliding sleeve (301) and is provided with a clamping section (405). The inner spindle (303) is fixed with a drive mechanism (304) on its circumferential side, and the screws (401) of the several sub-assembly clamps (4) are connected to the drive mechanism (304) through a transmission mechanism.

2. The pipe clamping device for verifying pipe displacement and optical cable strain according to claim 1, characterized in that, The transmission mechanism includes an external gear ring (406), which is rotatably mounted on the circumferential side of the inner spindle (303) via a slewing bearing. A conical gear ring (407) is provided on one side of the external gear ring (406), and a conical gear (408) that meshes with the conical gear ring (407) is provided at one end of the screw (401) near the inner spindle (303).

3. The pipe clamping device for verifying pipe displacement and optical cable strain according to claim 2, characterized in that, The drive mechanism (304) is a motor reducer, and the output end of the drive mechanism (304) is fixed with an output gear (409) that meshes with the external gear ring (406).

4. The pipe clamping device for verifying pipe displacement and optical cable strain according to claim 1, characterized in that, The clamping section (405) integrates a thin-film pressure sensor.

5. A pipe clamping device for verifying pipe displacement and optical cable strain according to claim 1, characterized in that, The ground rail trolley (1) is equipped with overload protection, which is a mechanical shear pin or an electromagnetic clutch.

6. A pipe clamping device for verifying pipe displacement and optical cable strain according to claim 1, characterized in that, A connecting ring (305) is fixed between the tail ends of several of the guide posts (302).

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