Traction beam marking device
By designing a traction beam scribing device including positioning discs and scribing rulers, the problems of complex process preparation and difficult to identify the center line in the prior art are solved, and the rapid and accurate scribing of the traction beam before pressing is achieved, and assembly efficiency and safety are improved.
Patent Information
- Application Number
- CN202421325838.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-12
AI Technical Summary
In the process of traction beam assembly, the process of large process preparation workload, difficult to locate the center line, and cannot be effectively utilized, resulting in unqualified press-fitting of the center pin bushing.
A traction beam scribing device is designed, including a positioning disc and a scribing ruler. By cooperating with the central hole of the traction beam, the positioning block of the scribing ruler is fitted with the end face of the traction beam, and using a scribing needle to mark the line along the side of the scribing ruler to achieve accurate demarcation of the center line of the traction beam.
This device makes the marking of the traction beam before pressing and installing more convenient and faster, greatly improves the work efficiency and accuracy of marking, simple and safe operation, and reduces process time and human resources requirements.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of auxiliary tooling for assembling a traction beam of a rail transit vehicle, in particular to a traction beam marking device. Background Art
[0002] At present, during the assembly process of the traction beam of the urban railway vehicle, the center pin bushing needs to be pressed into the center hole of the traction beam first, see Figure 1 As shown, the center hole of the traction beam is used as the reference hole, and the external cross-sectional shape of the center pin bushing is adapted to the cross-sectional shape of the center hole. When the bushing is press-fitted, the center pin bushing has a directional requirement. The center line of the traction beam along the longitudinal direction of the bogie and the opening position of the center pin bushing must be 90 degrees. In order to ensure this requirement, the traction beam and the center pin bushing must be marked before press-fitting. If the marking is not done or is inaccurate, the center pin bushing may be unqualified after press-fitting.
[0003] In the traditional traction beam marking process, the traction beam is first placed on two square boxes with a sling, a jack is placed under the traction beam cylinder, the height of the jack is adjusted, and a square is used to check whether the end face of the traction beam is perpendicular to the marking platform. Then, a height gauge is used to mark the center line near the upper end face of the traction beam. This marking method has the problems of large process preparation workload, difficulty in finding the center line, and ineffective use of manufacturing resources.
[0004] Therefore, based on the above problems, after a long period of practice and exploration, it is urgent to develop a traction beam marking device. Utility Model Content
[0005] The utility model aims to overcome the defects of the prior art and provide a traction beam marking device which can make the marking of the traction beam before press-fitting more convenient and quick.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] The utility model discloses a traction beam marking device, comprising:
[0008] A positioning disc, which cooperates with the center hole of the traction beam;
[0009] A marking ruler, which is mounted on the upper part of the positioning disc, and comprises a main body and ruler parts formed on both sides of the main body;
[0010] The positioning hole provided in the main body is connected to the core shaft of the positioning disc, and positioning blocks are fixedly connected to both ends of the main body, and the side of the positioning block has a positioning surface for fitting with the end surface of the traction beam;
[0011] Among them, a side for marking is formed on one side of the ruler part, the side edges of the two ruler parts are collinear and the extended lines coincide with the center of the positioning hole, and the side edges and the positioning surface are both arranged perpendicular to the axis of the length direction of the main body.
[0012] Furthermore, the two ruler parts and the main body are formed in the same half virtual circle, and the projection area of the half virtual circle on the horizontal plane is larger than half the area of the positioning disk.
[0013] Furthermore, the width of the main body of the marking ruler is smaller than the diameter of the positioning disc.
[0014] Furthermore, positioning grooves are provided on the lower surfaces of both ends of the main body of the marking ruler, and the positioning blocks are installed in the positioning grooves.
[0015] Furthermore, the positioning disc is processed with a chamfer at the end away from the core shaft portion, and the chamfer is a rounded corner.
[0016] Furthermore, it also includes a first bolt. The main body is located above the positioning disc and has a first mounting hole. The first bolt is threadedly connected to the threaded hole on the positioning disc through the first mounting hole.
[0017] Furthermore, it also includes a second bolt. The positioning block is provided with a second mounting hole. The second bolt is threadedly connected to the threaded hole provided on the main body through the second mounting hole.
[0018] In the above technical solution, the utility model provides a traction beam marking device, which has the following beneficial effects:
[0019] The utility model discloses a traction beam marking device, which comprises a positioning disc and a marking ruler. When in use, the positioning disc cooperates with the center hole of the traction beam, and two positioning blocks of the marking ruler fit with the A and B end faces of the traction beam respectively through the positioning surface. A marking needle is used to mark the edge of the center hole of the traction beam along the side formed by the ruler part of the marking ruler, so that the center line of the traction beam can be obtained, thereby making the marking work before the traction beam is pressed more convenient and quick, greatly improving the work efficiency and the accuracy of marking, and being convenient and simple to operate, saving time, labor and safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0021] Figure 1It is a top view of a traction beam in the prior art;
[0022] Figure 2 It is an axonometric diagram of a traction beam marking device disclosed in the utility model;
[0023] Figure 3 It is an axonometric diagram of another viewing angle of a traction beam marking device disclosed in the utility model;
[0024] Figure 4 The utility model discloses a top view of a traction beam marking device.
[0025] Description of reference numerals:
[0026] Positioning disc 1; spindle portion 11; marking ruler 2; positioning hole 21; ruler portion 22; side 23; positioning groove 24; positioning block 3; positioning surface 31; first bolt 4; second bolt 5. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0028] See also Figure 2 , 3 As shown;
[0029] The utility model discloses a traction beam marking device, comprising: a positioning disc 1 and a marking ruler 2 installed on the upper part of the positioning disc 1;
[0030] The positioning disc 1 cooperates with the center hole of the traction beam;
[0031] The marking ruler 2 comprises a main body and ruler parts 22 formed on both sides of the main body. The positioning hole 21 provided in the main body is connected to the core shaft part 11 of the positioning disc 1, and positioning blocks 3 are fixedly connected to both ends of the main body. The side of the positioning block 3 has a positioning surface 31 for fitting with the end surface of the traction beam.
[0032] A side edge 23 for marking is formed on one side of the ruler portion 22. The side edges 23 of the two ruler portions 22 are collinear and their extended lines coincide with the center of the positioning hole 21. The side edges 23 and the positioning surface 31 are both perpendicular to the axis of the length direction of the main body.
[0033] Specifically, the upper part of the positioning disc 1 of the marking device is provided with a core shaft portion 11 which is concentric with the positioning disc 1. The diameter of the core shaft portion 11 is smaller than the diameter of the positioning disc 1. During assembly, the positioning disc 1 is inserted into the positioning hole 21 of the marking ruler 2 through the core shaft portion 11. The marking ruler 2 includes a main body portion and a ruler portion 22. The ruler portion 22 protrudes from both sides of the main body portion. Positioning blocks 3 protruding from the lower surface of the main body portion are fixedly connected at both ends of the main body portion. The side edges 23 and the positioning surface 31 are perpendicular to the axis of the length direction of the main body portion.
[0034] When in use, the positioning disc 1 is placed in the center hole of the traction beam, and the positioning blocks 3 at both ends of the main body of the marking ruler 2 are respectively fitted with the end surface A and the end surface B of the traction beam, and the surface of the traction beam is marked along the side 23 of the ruler part 22 to obtain the following Figure 1 The horizontal axis shown is perpendicular to the vertical axis of the traction beam, which is achieved by the device, making the marking of the traction beam before press-fitting more convenient and quick;
[0035] See also Figure 4 As shown:
[0036] Preferably, the two ruler portions 22 and the main body are formed in the same half virtual circle, and the projection area of the half virtual circle on the horizontal plane is larger than the half area of the positioning disk 1, that is, the diameter of the virtual circle formed by the main body of the marking ruler 2 and the two ruler portions 22 is larger than the diameter of the positioning disk 1, so that the ruler portion 22 is formed outside the center hole of the traction beam, which is convenient for marking on the upper surface of the traction beam, and the width of the main body of the marking ruler 2 is smaller than the diameter of the positioning disk 1.
[0037] In order to ensure the position stability of the positioning block 3, preferably, positioning grooves 24 are provided on the lower surfaces of both ends of the main body of the marking ruler 2, and the positioning block 3 is installed through the positioning grooves 24, and the positioning grooves 24 ensure that the position of the positioning block 3 is accurate and stable;
[0038] Preferably, the end of the positioning disc 1 away from the core shaft portion 11 is chamfered, and the chamfer is a rounded corner, which facilitates the positioning disc 1 to be quickly placed in the center hole of the traction beam.
[0039] See also Figure 1 As shown:
[0040] The marking device also includes a first bolt 4. The main body is located above the positioning disc 1 and has a first mounting hole. The first bolt 4 is threadedly connected to a threaded hole on the positioning disc 1 through the first mounting hole, so that the marking ruler 2 and the positioning disc 1 can be fixedly connected in a detachable manner.
[0041] See also Figure 2 As shown:
[0042] The marking device further comprises a second bolt 5, a second mounting hole is provided on the positioning block 3, and the second bolt 5 is threadedly connected with the threaded hole provided on the body through the second mounting hole, so that the marking ruler 2 and the positioning block 3 are fixedly connected in a detachable manner.
[0043] In the above technical solution, the utility model provides a traction beam marking device, and the method of use is:
[0044] When marking, place the positioning disc 1 of the device into the center hole of the traction beam, keep the positioning disc 1 and the end of the center hole of the traction beam in close contact, place the positioning blocks 3 at both ends of the marking ruler 2 close to the end faces A and B of the traction beam respectively, locate the center hole of the traction beam by the positioning disc 1 and the two positioning blocks 3, use the marking needle to mark along the side 23 formed by the ruler part 22 of the marking ruler 2 to the edge of the center hole of the traction beam, and the center line of the traction beam can be obtained;
[0045] Beneficial effect: By using the traction beam marking device, the work efficiency is greatly improved, and the traction beam press-fitting process is shortened from more than 15 minutes in the past to less than 5 minutes. At the same time, the marking error is reduced, the marking accuracy is improved, and the operation is convenient and simple. The original two operators can be reduced to one operator alone, which saves time, labor and safety, and greatly improves production efficiency.
[0046] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A traction beam marking device, characterized in that: include: A positioning disc (1) which cooperates with the center hole of the traction beam; A marking ruler (2) is mounted on the upper part of the positioning disc (1), and the marking ruler (2) comprises a main body and ruler parts (22) formed on both sides of the main body; The positioning hole (21) provided in the main body is connected to the core shaft (11) of the positioning disc (1), and positioning blocks (3) are fixedly connected to both ends of the main body, and the side of the positioning block (3) has a positioning surface (31) for fitting with the end surface of the traction beam; A side edge (23) for marking is formed on one side of the ruler portion (22); the side edges (23) of the two ruler portions (22) are collinear and their extended lines coincide with the center of the positioning hole (21); and the side edges (23) and the positioning surface (31) are both arranged perpendicular to the axis of the length direction of the main body portion.
2. A traction beam marking device according to claim 1, characterized in that ； The two ruler parts (22) and the main body are formed in the same half virtual circle, and the projection area of the half virtual circle on the horizontal plane is larger than half the area of the positioning disc (1).
3. A traction beam marking device according to claim 2, characterized in that; The width of the main body of the marking ruler (2) is smaller than the diameter of the positioning disc (1).
4. A traction beam marking device according to claim 1, characterized in that; Positioning grooves (24) are provided on the lower surfaces of both ends of the main body of the marking ruler (2), and the positioning blocks (3) are installed in the positioning grooves (24).
5. A traction beam marking device according to claim 1, characterized in that ； The end of the positioning disc (1) away from the core shaft portion (11) is processed with a chamfer, and the chamfer is a rounded corner.
6. A traction beam marking device according to any one of claims 1 to 5, characterized in that ； It also comprises a first bolt (4); the main body is located above the positioning disc (1) and is provided with a first mounting hole; the first bolt (4) is threadedly connected to a threaded hole provided on the positioning disc (1) through the first mounting hole.
7. A traction beam marking device according to any one of claims 1 to 5, characterized in that ； It also includes a second bolt (5), a second mounting hole is provided on the positioning block (3), and the second bolt (5) is threadedly connected to the threaded hole provided on the main body through the second mounting hole.