Guide locking structure of three-way displacement meter

Abstract

The utility model discloses a guide locking structure of a three-way displacement meter, the three-way displacement meter comprises a hard tube, a joint and a flexible tube which are connected in sequence, the guide locking structure comprises a guide block arranged on the outer periphery of the joint and a guide groove arranged at the end part of the hard tube, and the guide block is matched and clamped with the guide groove. And the hard pipe is connected with the connector to limit the circumferential position between the hard pipe and the connector, and a fastener is further arranged between the hard pipe and the connector in a matched mode. During installation, only the hose needs to be leveled, then the hard pipe is inserted into the connector on the end portion of the hose, and the guide block is connected with the guide groove in a clamped mode. And through the guiding of the guiding block and the guiding groove, the hard pipe can be automatically leveled. And finally, the hard pipe and the joint can be fixed through the fastener. Compared with the prior art, automatic leveling of the hard pipe is achieved through matching of the guide block and the guide groove, so that errors generated when the hard pipe and the flexible pipe are independently leveled are reduced, and the hard pipe can be detached in the mode of detaching the fastener.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way displacement meter technical field, in particular, relate to a three -way displacement meter guiding locking structure. BACKGROUND

[0002] Serial joint array displacement meter (three -way displacement meter) is a flexible, standard 3D measuring system. It mainly uses a set of dense array MEMS micro electro mechanical system and the verified model calculation program to measure 2D, 3D deformation value. Serial joint array displacement meter can be freely bent without priority axis, and can be installed vertically, horizontally or in a ring shape. Serial joint array displacement meter measures the acceleration change of accelerometer in different axial directions to reflect the angle change of corresponding axial direction and gravity direction, and calculates the displacement change of corresponding node through the angle change.

[0003] A typical serial joint array displacement meter includes a hard tube and a soft tube connected in sequence, and the hard tube and the soft tube are connected by a joint. During installation, the entire rod needs to be fixed on a caliper, and the joint and the hard tube are welded after the hard tube and the soft tube are separately leveled. This installation method has the following problems:

[0004] 1. Separate leveling of the hard tube and the soft tube is prone to errors, reducing installation accuracy.

[0005] 2. After welding installation, it is difficult to disassemble and adjust, and the welded part is not aesthetically pleasing.

[0006] Therefore, there is an urgent need for a locking structure for the assembly and connection of the soft tube and the hard tube of the three -way displacement meter to solve the above technical problems. INVENTION CONTENTS

[0007] The utility model aims at overcoming the defects of prior art, and provides a three -way displacement meter guiding locking structure.

[0008] The utility model aims at overcoming the defects of prior art, and provides a three -way displacement meter guiding locking structure.

[0009] A three -way displacement meter guiding locking structure, wherein the three -way displacement meter includes a hard tube, a joint and a soft tube connected in sequence, the guiding locking structure includes a guide block provided on the outer periphery of the joint, and a guide groove provided at the end of the hard tube, the guide block and the guide groove are matched and clamped to define the circumferential position between the hard tube and the joint, and a fastener is further adapted between the hard tube and the joint.

[0010] Preferably, the guide groove penetrates the side wall of the hard tube.

[0011] Preferably, at least one side wall of the guide block is provided with a guide inclined surface.

[0012] Preferably, the guide block is provided with a guide slope on each of the two side walls, and the two guide slopes are arranged to be inclined away from each other, so that the cross-sectional area of the guide block is reduced to one side of the hard pipe.

[0013] Preferably, the side wall of the joint is provided with a fastening hole, and the side wall of the hard pipe is provided with a connecting hole, and the fastener passes through the connecting hole and is matched in the fastening hole.

[0014] Preferably, when the guide block is initially clamped in the guide groove, the axis of the connecting hole and the axis of the fastening hole have an eccentric distance.

[0015] Preferably, the fastener comprises a screw.

[0016] Preferably, the eccentric distance is 0.2-0.3mm.

[0017] Preferably, the side wall of the joint is further provided with a ring groove for placing a sealing ring.

[0018] Preferably, the connecting hole is a tapered hole.

[0019] The beneficial effects of the utility model are: during installation, only the soft pipe needs to be leveled, then the hard pipe is inserted into the joint on the end of the soft pipe, and the guide block is clamped with the guide groove. Through the guide of the guide block and the guide groove, the hard pipe is automatically leveled. Finally, the fastener is used to fix the hard pipe and the joint. Compared with the prior art, the utility model realizes automatic leveling of the hard pipe through the cooperation of the guide block and the guide groove, thereby reducing the error during separate leveling of the hard pipe and the soft pipe, and the hard pipe can be disassembled through the disassembly of the fastener. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structural schematic view of an embodiment;

[0021] Fig. 2 It is a structural schematic view of a positioning block;

[0022] Fig. 3 It is a structural schematic view of a fastening hole.

[0023] Reference signs: 1, guide block; 2, guide groove; 3, fastener; 4, guide slope; 5, fastening hole; 6, connecting hole; 7, eccentric distance; 8, ring groove; 9, hard pipe; 10, joint; 11, soft pipe; 12, array MEMS micro-electromechanical chip. DETAILED DESCRIPTION

[0024] The technical solutions of the utility model will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are only some of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0025] A typical three-way displacement meter generally comprises a hard pipe 9, a joint 10 and a soft pipe 11 connected in sequence, and the detection length of the displacement meter is adjusted through the sequential circulation connection of the three. Among them, the array MEMS micro-electromechanical chip 12 is usually installed on the joint 10. The displacement meter can be freely bent through the soft pipe 11, so that its installation mode is more diverse, for example, it can be installed vertically, horizontally or in a ring shape.

[0026] During installation, the soft pipe 11 and the hard pipe 9 will be offset and twisted at the position of the joint 10. In the traditional method, the whole rod of the displacement meter is fixed on a caliper, and each component is individually leveled and then welded. The individual leveling of each component will cause the accumulation of errors, thereby reducing the assembly accuracy of the displacement meter, and in addition, the welding method is not easy to disassemble and adjust the displacement meter later.

[0027] In view of the above technical problems, as shown in Figs. 1-3 The utility model provides a three-way displacement meter guiding and locking structure, which comprises a guide block 1 arranged on the outer periphery of the joint 10 and a guide groove 2 arranged at the end of the hard pipe 9, and the guide block 1 and the guide groove 2 have a matching shape. During installation, the soft pipe 11 can be leveled, and then the hard pipe 9 is connected to the joint 10, especially the guide block 1 is inserted into the guide groove 2, and the clamping cooperation of the guide block 1 and the guide groove 2 can limit the circumferential position between the hard pipe 9 and the soft pipe 11, thereby avoiding the individual leveling of the hard pipe 9.

[0028] The hard pipe 9 and the joint 10 are fixed by the fastener 3, which facilitates the disassembly of the hard pipe 9.

[0029] In some embodiments, at least one side wall of the guide block 1 is adapted to be a guide slope 4. Fig. 2 In some embodiments, at least one side wall of the guide block 1 is adapted to be a guide slope 4.

[0030] When the hard tube 9 and the joint 10 are butted, the small-head guide block 1 is inserted into the large-opening guide slot 2, so that the two are more conveniently clamped without manual observation of whether they are aligned.

[0031] For example, the guide slot 2 is adapted as a three-way opening slot, that is, the guide slot 2 is through the side wall of the hard tube 9. This reduces the manufacturing difficulty of the guide slot 2, for example, it can be quickly cut by wire cutting.

[0032] In the preferred example, the side wall of the joint 10 is provided with a fastening hole 5, and the side wall of the hard tube 9 is provided with a connecting hole 6. After the hard tube 9 and the joint 10 are butted, the fastening hole 5 is substantially aligned with the connecting hole 6, and a fastener 3 such as a screw can pass through the connecting hole 6 and be screwed into the fastening hole 5, thereby achieving compression and fixation between the hard tube 9 and the joint 10.

[0033] Unlike the conventional fastening method, after the hard tube 9 and the joint 10 are butted, the guide block 1 is initially clamped in the guide slot 2, and at this time, the axis of the connecting hole 6 and the axis of the fastening hole 5 have an eccentric distance 7. For example, the eccentric distance 7 can be 0.2-0.3mm. It can be imagined that based on the existence of the eccentric distance 7, the screwing of the screw in the fastening hole 5 will drive the hard tube 9 and the joint 10 to be axially tensioned with each other, thereby eliminating the gap between the hard tube 9 and the joint 10, and the side wall of the guide block 1 will be in close contact with the side wall of the guide slot 2, thereby further improving the assembly accuracy of the three-way displacement meter.

[0034] For example, the connecting hole 6 can be preferably a tapered hole. The tapered connecting hole 6 is more easily inserted by the screw to one side of the fastening hole 5, and is not easy to cause interference and resistance between the screw and the hard tube 9. The hard tube 9 can smoothly move axially to achieve the purpose of eliminating the assembly gap.

[0035] In addition, the side wall of the joint 10 is also provided with a ring groove 8 for placing a sealing ring. The sealing ring fills the gap between the outer wall of the joint 10 and the inner wall of the hard tube 9, so that the sealing performance of the three-way displacement meter is higher.

[0036] The above is only the preferred embodiment of the present application, and it should be understood that the present application is not limited to the form disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein by the above teaching or related technical or knowledge. Any modification and change made by the person skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims attached hereto.

Claims

1. A triaxial displacement gauge guide locking structure, wherein the triaxial displacement gauge comprises a rigid tube (9), a connector (10), and a flexible tube (11) connected in sequence, characterized in that: The guide locking structure includes a guide block (1) disposed on the outer periphery of the connector (10) and a guide groove (2) disposed at the end of the rigid tube (9). The guide block (1) and the guide groove (2) engage to limit the circumferential position between the rigid tube (9) and the connector (10). Fasteners (3) are also adapted between the rigid tube (9) and the connector (10).

2. The triaxial displacement gauge guide locking structure according to claim 1, characterized in that: The guide groove (2) extends through the side wall of the rigid tube (9).

3. The triaxial displacement gauge guide locking structure according to claim 1, characterized in that: At least one sidewall of the guide block (1) is provided with a guide ramp (4).

4. The triaxial displacement gauge guide locking structure according to claim 3, characterized in that: The guide block (1) has guide ramps (4) on both sides, and the two guide ramps (4) are inclined away from each other so that the cross-sectional area of ​​the guide block (1) is reduced towards the rigid tube (9).

5. The triaxial displacement gauge guide locking structure according to any one of claims 1-4, characterized in that: The connector (10) has a fastening hole (5) on its side wall, and the rigid tube (9) has a connecting hole (6) through its side wall. The fastener (3) passes through the connecting hole (6) and fits into the fastening hole (5).

6. The triaxial displacement gauge guide locking structure according to claim 5, characterized in that: When the guide block (1) is initially engaged in the guide groove (2), there is an eccentric distance (7) between the axis of the connecting hole (6) and the axis of the fastening hole (5).

7. The triaxial displacement gauge guide locking structure according to claim 5, characterized in that: The fastener (3) includes screws.

8. The triaxial displacement gauge guide locking structure according to claim 6, characterized in that: The eccentricity distance (7) is 0.2-0.3 mm.

9. The triaxial displacement gauge guide locking structure according to claim 1, characterized in that: The side wall of the connector (10) is also provided with an annular groove (8) for placing a sealing ring.

10. The triaxial displacement gauge guide locking structure according to claim 5, characterized in that: The connecting hole (6) is a tapered hole.

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