Joint connecting rod measuring tool

Abstract

The utility model discloses a joint connecting rod measuring tool, and relates to the technical field of tools, the joint connecting rod measuring tool comprises a main body and a positioning piece, the positioning piece is installed on the main body, when the positioning piece is inserted into a connecting hole of a joint connecting rod, the joint end of the joint connecting rod is positioned by the tool, and during measurement, the plane of the main body is used as a side plane, and the positioning piece is arranged on the main body. The rubber joint metal mounting surface at one end of the connecting rod serves as the plane at the other side, the vernier caliper is used for size detection, the pre-assembly size can be rapidly measured, and the measurement error is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, and more specifically, to a joint connecting rod measuring tooling. Background Art

[0002] During the connecting rod maintenance work of EMUs and intercity EMUs, the connecting rods and rod end bearings that have passed the maintenance need to be pre-assembled according to the length requirements to facilitate the subsequent assembly work.

[0003] When measuring length, the connecting rod end is positioned using the metal surface of the rubber joint as the measuring ruler's contact surface; the bearing side of the rod end has a circular contour and the bearing center is a hollow structure, making it difficult to locate the center of the circle, making it difficult to place the measuring ruler against it, and the measurement results have large errors, which greatly affects the subsequent assembly and tightening processes.

[0004] In summary, how to provide a tool for conveniently measuring joint connecting rods is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a joint connecting rod measuring tool to facilitate the measurement of the length of the joint connecting rod and improve the measurement accuracy.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A joint connecting rod measuring tool is used for positioning and cooperating with the joint connecting rod, and the joint connecting rod measuring tool comprises:

[0008] The main body has a first reference surface, which is perpendicular to the horizontal surface when in use;

[0009] A positioning piece is used for plugging and positioning with the connecting hole of the joint connecting rod. The positioning piece is installed on the main body. When the positioning piece is inserted into the connecting hole of the joint connecting rod, the tooling can position the joint end of the joint connecting rod. The axis of the positioning piece is parallel to the first reference plane.

[0010] The utility model further comprises:

[0011] Two support parts;

[0012] a connecting portion, the connecting portion being used to connect the two supporting portions;

[0013] The two supporting parts and the connecting part are arranged at right angles, and the first reference plane is formed by the same side surface of the two supporting parts and the connecting part.

[0014] Furthermore, the utility model discloses that the connecting portion and the two supporting portions are made of aluminum alloy material and are manufactured in an integrally formed manner.

[0015] Furthermore, in the present invention, the outer surface of the main body has a processing flatness of less than .mm.

[0016] Furthermore, in the present invention, the positioning member is a cylindrical structure and has the same connection hole diameter as the joint connecting rod.

[0017] Furthermore, the present invention provides that the positioning member is detachably mounted on the connecting portion.

[0018] Furthermore, the utility model has a screw fixed at one end of the positioning member, and a through hole is provided on the connecting portion. When the screw passes through the through hole and is locked by a nut, the positioning member is fixed to the connecting portion.

[0019] Furthermore, in the present invention, the positioning member is a conical structure.

[0020] Furthermore, the utility model provides a tightening mechanism on the main body, and the tightening mechanism is used to ensure that the connecting hole of the joint connecting rod is in close contact with the positioning member.

[0021] The joint connecting rod measuring tool provided by the utility model has the following advantages: when in use, the positioning piece is installed on the main body; when the positioning piece is inserted into the connecting hole of the joint connecting rod, the tool is used to position the joint end of the joint connecting rod; the joint end of the connecting rod is fixed by the positioning piece, and the positioning piece can preliminarily position the connecting hole of the joint; that is, when measuring, the first reference plane of the main body is used as one side plane, and the metal mounting surface of the rubber joint at one end of the connecting rod is used as the other side plane; a vernier caliper is used for size detection, which can quickly measure the pre-assembled size and significantly reduce the measurement error. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the overall structure of the tooling provided by the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the tooling provided by the utility model when used in conjunction with the connecting rod;

[0025] Figure 1-Figure 2 , the reference numerals include:

[0026] 1, body; 101, support part; 102, connecting part; 2, positioning member; 3, through hole; 4, screw; 5, nut. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] The core of the utility model provides a joint connecting rod measuring tool, it is convenient to measure the length of joint connecting rod, improves the measurement accuracy.

[0029] Please refer to Figure 1-Figure 2 A joint connecting rod measuring tool, including body 1 and positioning member 2, positioning member 2 is installed on body 1, when positioning member 2 is inserted into the connecting hole of joint connecting rod, the positioning of the joint end of the tool to joint connecting rod is realized.

[0030] It should be noted that the positioning member 2 in the embodiments of the utility model can adopt the same shape as the joint connecting hole, and the maximum outer diameter of the positioning member 2 is the same as the inner diameter of the joint connecting hole.

[0031] In addition, in the embodiments of the utility model, the tool and the joint connecting rod are placed on the plane workbench during measurement, and the plane workbench needs to meet the required flatness requirement.

[0032] When using, positioning member 2 is installed on body 1, when positioning member 2 is inserted into the connecting hole of joint connecting rod, the positioning of the joint end of the tool to joint connecting rod is realized, the joint end of the connecting rod is fixed through positioning member 2, and positioning member 2 can preliminarily position the joint, that is, during measurement, the first reference surface of body 1 is used as one side plane, and the rubber joint metal mounting surface of one end of the connecting rod is used as the other side plane, and the size is detected by using a vernier caliper, so that the pre-assembly size can be quickly measured, and the measurement error is significantly reduced.

[0033] Please refer to Figure 1-Figure 2In some embodiments, the main body 1 includes two supporting parts 101 and a connecting part 102. The connecting part 102 is used to connect the two supporting parts 101. The two supporting parts 101 and the connecting part 102 are arranged at 90 degrees. That is, the main body 1 is composed of the two supporting parts 101 and the connecting part 102, and the two supporting parts 101 and the connecting part 102 are arranged at 90 degrees, so that the main body 1 has a U-shaped structure. The positioning member 2 is installed at the center of the connecting part 102. Therefore, when measuring, when the positioning member 2 is inserted into the joint connection hole, the support part 101 can be avoided. 1 causes interference to the connecting rod, and the support part 101 can support the entire tooling, and at the same time can ensure a fixed gap between the positioning part 2 and the measuring platform, so that the connecting rod as a whole remains parallel to the measuring platform, which is conducive to further improving the accuracy of measuring the length of the connecting rod. At the same time, the first reference plane is formed by the same side of the two supporting parts and the connecting part, that is, one side of the main body is the first reference plane, and the first reference plane is parallel to the positioning part. When measuring, the first reference plane is parallel to the plane of the connecting rod end, thereby improving the accuracy of the measurement.

[0034] Optionally, in some embodiments, the thickness of the support portion 101 may be customized according to the size of the connecting rod to be measured. Specifically, the size of the support portion 101 may be customized according to the size of the end of the connecting rod away from the joint.

[0035] In other embodiments, the support portion 101 adopts a structure with adjustable thickness. Specifically, a top plate is provided at the bottom of one of the support portions 101, and an adjusting screw 4 is rotatably installed on the top plate. The adjusting screw 4 is threadedly engaged with the support portion 101. That is to say, when the support height needs to be adjusted, it is only necessary to rotate the top plate. By adjusting the threaded engagement between the screw 4 and the support portion 101, the distance between the top plate and the support portion 101 is adjusted, thereby realizing the adjustment of the support height, so that the tooling can adapt to the measurement of connecting rods of more sizes.

[0036] Optionally, in some embodiments, the connecting portion 102 and the two supporting portions 101 are made of aluminum alloy material and are manufactured in an integrated molding manner. The integrated molding manner can enhance the stability of the main body 1 and facilitate processing and molding. The tooling main body 1 is made of aluminum alloy material, and the overall mass of the tooling is less than 7.5KG. It is lighter and can be picked up and used by one person, which is more convenient.

[0037] Optionally, in some embodiments, a handle is installed on the main body 1 to facilitate workers to pick up and carry the tooling.

[0038] Optionally, in some embodiments, the outer surface processing flatness of the main body 1 is less than 0.1 mm, that is, the flatness of the bottom of the support part 101 is less than 0.1 mm. During measurement, it is tightly attached to the work platform, which is conducive to further improving the accuracy of measuring the length of the connecting rod.

[0039] Please refer to Figure 1-Figure 2 In some embodiments, the positioning member 2 is a cylindrical structure and has the same diameter as the connection hole of the joint connecting rod. That is to say, a cylindrical positioning member 2 is used and inserted into the joint connection hole. At the same time, the diameter of the positioning member 2 is the same as the inner diameter of the joint connection hole, so as to ensure the centering of the connection hole, avoid the situation where the center position of the connection hole cannot be determined, and further improve the accuracy of the measurement data.

[0040] Optionally, in the above embodiment, the end of the positioning member 2 away from the connecting portion 102 adopts a chamfered structure to facilitate the insertion of the positioning member 2 into the connecting hole.

[0041] Optionally, in some embodiments, before inserting the positioning member 2 into the connecting hole, lithium-based grease is applied to the surface of the positioning member 2 to increase the smoothness of the surface of the positioning member 2 and facilitate quick insertion into the connecting hole.

[0042] In the above embodiment, optionally, the positioning member 2 is detachably mounted on the connecting portion 102 , and different positioning members 2 can be quickly replaced by the disassembly structure to meet the detection requirements of connecting rods of different sizes.

[0043] Optionally, in some embodiments, a screw 4 is fixed to one end of the positioning member 2, and a through hole 3 is provided on the connecting portion 102. When the screw 4 passes through the through hole 3 and is tightened by the nut 5, the positioning member 2 is fixed to the connecting portion 102. That is, by installing the screw 4 on the positioning member 2 and using the nut 5, the positioning member 2 is detachably fixed to the main body 1.

[0044] In other embodiments, a polished rod is fixed on the positioning member 2, a damping sleeve is sleeved on the polished rod, and a through hole 3 is provided on the connecting portion 102. By cooperating with the damping sleeve and the polished rod, the fixing effect is ensured when the polished rod is inserted into the through hole 3.

[0045] In other embodiments, the positioning member 2 is a conical structure. Through the conical structure, it can not only adapt to connecting holes of different sizes, but also center connecting holes of different sizes, thereby improving the versatility of the tooling when used, avoiding the need to replace the tooling when measuring connecting rods of different sizes, and improving the efficiency of measurement.

[0046] Optionally, in some embodiments, a tightening mechanism is provided on the main body 1, which is used to ensure that the connecting hole of the joint connecting rod is in close contact with the positioning member 2, and the tightening mechanism is used to tighten the connecting rod toward the conical positioning member 2 to ensure effective centering of the connecting hole.

[0047] In the above embodiment, optionally, the tightening structure is a push rod rotatably mounted on the support portion 101, the push rod is an L-shaped structure, and a torsion spring is provided at the rotating connection between the push rod and the support portion 101 to drive the push rod to rotate toward the positioning member 2, thereby tightening the connecting rod through the push rod.

[0048] In other embodiments, the tightening mechanism is a magnet fixed on the connecting part 102. The magnet is annular and is arranged coaxially with the positioning member 2. Through the magnetism of the magnet, the connecting rod is pulled toward the connecting part 102, thereby achieving close contact between the connecting hole and the positioning member 2.

[0049] In the above embodiment, optionally, a spring is provided between the magnet and the connecting portion 102. When the magnet is attracted to the connecting rod, the spring pulls the rod toward the connecting portion 102 and provides a pre-tightening force to achieve close contact between the connecting hole and the positioning member 2.

[0050] That is to say, the focus of the embodiment of the present invention is that when the positioning member 2 is inserted into the connecting hole of the joint connecting rod, the tooling is used to position the joint end of the joint connecting rod, and the joint end of the connecting rod is fixed through the positioning member 2, and the positioning member 2 can perform preliminary centering of the joint. That is to say, when measuring, the plane of the main body 1 is used as one side plane, and the metal mounting surface of the rubber joint at one end of the connecting rod is used as the other side plane. A vernier caliper is used for size detection, which can quickly measure the pre-assembled size and significantly reduce the measurement error.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] The above is a detailed introduction to a joint connecting rod measuring tool provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A joint connecting rod measuring tool, characterized in that: Used for positioning and cooperating with the joint connecting rod, the joint connecting rod measuring tool includes: The main body (1) has a first reference surface, which is perpendicular to the horizontal surface when in use; A positioning member (2) is used for inserting and positioning with the connection hole of the joint connecting rod. The positioning member (2) is installed on the main body (1). When the positioning member (2) is inserted into the connection hole of the joint connecting rod, the tooling can position the joint end of the joint connecting rod. The axis of the positioning member (2) is parallel to the first reference plane.

2. The joint connecting rod measuring tool according to claim 1, characterized in that: The main body (1) includes: two supporting parts (101); a connecting portion (102), the connecting portion (102) being used to connect the two supporting portions (101); The two support portions (101) and the connecting portion (102) are arranged at 90 degrees, and the first reference plane is formed by the same side surface of the two support portions (101) and the connecting portion (102).

3. The joint connecting rod measuring tool according to claim 2, characterized in that: The connecting portion (102) and the two supporting portions (101) are made of aluminum alloy material and are manufactured in an integrally formed manner.

4. The joint connecting rod measuring tool according to claim 1, characterized in that: The outer surface of the main body (1) has a processing flatness of less than 0.1 mm.

5. The joint connecting rod measuring tool according to claim 3, characterized in that: The positioning member (2) is a cylindrical structure and has the same connection hole diameter as the joint connecting rod.

6. The joint connecting rod measuring tool according to claim 5, characterized in that: The positioning member (2) is detachably mounted on the connecting portion (102).

7. The joint connecting rod measuring tool according to claim 6, characterized in that: A screw rod (4) is fixed to one end of the positioning member (2), and a through hole (3) is provided on the connecting portion (102). When the screw rod (4) passes through the through hole (3) and is tightened by a nut (5), the positioning member (2) is fixed to the connecting portion (102).

8. The joint connecting rod measuring tool according to claim 3, characterized in that: The positioning member (2) is a conical structure.

9. The joint connecting rod measuring tool according to any one of claims 1 to 8, characterized in that: The main body (1) is provided with a tightening mechanism, which is used to ensure that the connection hole of the joint connecting rod is in close contact with the positioning member (2).

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