Car body chassis small part positioning device

Abstract

The utility model discloses a vehicle body chassis small part positioning device, and belongs to the technical field of rail transit vehicle part installation auxiliary tools. The device comprises two cross beams, the pull rod is fixedly connected with the two cross beams in a linear manner; the sliding mechanism and the range finder are fixedly connected to the tail end of the cross beam; a positioning block is installed at the end, away from the sliding mechanism, of the cross beam, a module is slidably connected to the portion, located between the positioning block and the sliding mechanism, of the cross beam, a stamping block capable of stretching out through pressing is installed in the module, and a handle is installed at the top of the module and used for driving the stamping block to stretch out and rubbing a mark matched with the small underframe part in shape. The utility model has the beneficial effects of simple structure, convenience in use and capabilities of improving the working efficiency, reducing the labor intensity of operators and reducing the material loss.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling for rail transit vehicle component installation, in particular to a small-part positioning device for a vehicle body underframe. Background Art

[0002] At present, in the process of rail transit vehicle body production, it is necessary to install small chassis parts on the chassis. The existing operation process is: the installation positioning marking of small chassis parts (rubber blocks) is divided into longitudinal positioning and transverse positioning parts with reference to the stainless steel reference plane at the bottom of the body structure. First, the reference lines, namely the transverse reference line and the longitudinal reference line, are drawn on the stainless steel reference plane at the bottom of the body structure. The transverse position lines of all rubber blocks are drawn in sequence with the transverse reference line as the reference, and then the longitudinal position lines of all rubber blocks are drawn in sequence with the longitudinal reference line as the reference. The intersection of the transverse position line and the longitudinal position line and the folding point are the two core positioning points of each rubber block; since each vehicle has about 1,000 small chassis parts (rubber blocks), it is necessary to draw about 100 transverse position lines and 10 longitudinal position lines, which is a large amount of engineering, time-consuming and labor-intensive, and the transverse position lines and the longitudinal position lines are interwoven into a grid, which is easy to confuse the rubber block positioning line, and there is an error in the installation position of the rubber block, resulting in the risk of dismantling the vehicle in the later process, causing great material loss. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a vehicle body underframe small parts positioning device that can synchronously and in phase position multiple rubber blocks, solve the problem of rubber blocks repeatedly drawing horizontal and vertical position lines, eliminate errors caused by human factors, and ensure the accuracy, visualization, and batch production of the positioning process.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model discloses a vehicle body underframe small parts positioning device, comprising:

[0006] two cross beams;

[0007] A tie rod that is in a straight line shape and fixedly connects the two beams; and

[0008] A sliding mechanism and a rangefinder fixedly connected to the end of the beam;

[0009] A positioning block is installed at the end of the beam away from the sliding mechanism. The beam is slidably connected with a module between the positioning block and the sliding mechanism. A printing block that can be extended by pressing is installed in the module. A handle is installed on the top of the module for driving the printing block to extend and imprint a mark that matches the shape of the small part of the chassis.

[0010] Furthermore, the side walls on both sides of the beam are provided with side slide grooves along the length direction, and slider assemblies are installed in the side slide grooves. The module and the positioning block are both fixedly connected with upwardly extending ears on both sides, and the top of the ear is provided with a socket connected to the slider assembly.

[0011] Furthermore, the module and the positioning block are both rectangular structures, and their lengths are greater than the width of the beam. A groove for accommodating the printing block is provided on the lower surface of the module, and the handle passes through the module from the upper part and is connected to the printing block.

[0012] Furthermore, an upper slide groove is provided on the upper surface of the beam along the length direction, and the upper slide groove is slidably connected to the pull rod. Positioning pieces are installed at both ends of the pull rod for locking the extended length of the two beams at any length.

[0013] Furthermore, the positioning member is a top screw.

[0014] Furthermore, a marking hole for positioning is provided on one side of the positioning block.

[0015] Furthermore, the side wall of the beam is marked with a marking line.

[0016] Furthermore, the sliding mechanism includes a support seat fixedly connected to the crossbeam, and pulleys are rotatably connected to both ends of the support seat.

[0017] In the above technical scheme, the utility model provides a positioning device for small parts of a vehicle underframe. Compared with the prior art, the positioning device changes the previous horizontal and vertical marking operation mode using multiple people into a matrix-type synchronous positioning of multiple rubber blocks, which is convenient for personnel to quickly and accurately construct, solves the problem of repeated horizontal and vertical position line marking of rubber blocks, eliminates errors caused by human factors, improves the visualization and accuracy of its positioning line, and effectively avoids the hidden danger of dismantling the vehicle due to the accumulation of tolerances in subsequent processes caused by positioning line errors, and avoids the risk of abnormal material loss caused by incorrect installation of rubber blocks, saving production costs. The original installation operation mode takes about 120 minutes to complete the positioning of the rubber blocks of a vehicle. After using the positioning device, it only takes 30 minutes to position the rubber blocks, and the positioning work efficiency is improved by more than 70%. According to the daily output of 2 vehicles, the rubber block positioning operation can save 3 hours of time every day, which has the beneficial effects of improving work efficiency, reducing the labor intensity of operators, and reducing material loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is an axonometric diagram of the overall structure of a small-part positioning device for a vehicle underframe disclosed in the utility model;

[0020] Figure 2 It is a partial axonometric diagram of a small-part positioning device for a vehicle underframe disclosed in the utility model;

[0021] Figure 3 It is a partial axonometric view from another perspective of a vehicle body underframe small parts positioning device disclosed in the utility model;

[0022] Figure 4 This is a top view of a vehicle body underframe small parts positioning device disclosed in the utility model;

[0023] Figure 5 This is a left view of a small-part positioning device for a vehicle underframe disclosed in the utility model;

[0024] Figure 6 The utility model discloses an axonometric diagram of a sliding mechanism of a small-part positioning device for a vehicle body chassis.

[0025] Description of reference numerals:

[0026] 1. Beam; 2. Pull rod; 3. Sliding mechanism; 4. Distance meter; 5. T-shaped slider; 6. Module; 7. Printing block; 8. Positioning block; 9. Handle;

[0027] 101, side slide; 102, upper slide;

[0028] 201, top thread;

[0029] 301, support seat; 302, pulley; 303, axle; 304, axle nut.

[0030] 501, nut;

[0031] 801. Mark the hole. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-3 As shown;

[0034] The utility model discloses a positioning device for small parts of a vehicle underframe, comprising: two cross beams 1, a pull rod 2, a sliding mechanism 3, and a distance meter 4;

[0035] Two cross beams 1, the positioning body of the device is formed by the two cross beams 1, the pull rod 2 is in a straight line shape and fixedly connects the two cross beams 1, the lower surfaces of the ends of the two cross beams 1 are fixedly connected with a sliding mechanism 3, and the upper surfaces are fixedly connected with a rangefinder 4;

[0036] Among them, a positioning block 8 is installed at the end of the crossbeam 1 away from the sliding mechanism 3, and the crossbeam 1 is slidably connected with a module 6 between the positioning block 8 and the sliding mechanism 3, and a printing block 7 that can be extended by pressing is installed in the module 6, and a handle 9 is installed on the top of the module 6. The printing block 7 is driven by the handle 9 to extend and stamp a mark matching the shape of the small part of the chassis, and the small part of the chassis is a rubber block;

[0037] When in use, the cross beam 1 is away from the sliding mechanism 3 and the positioning block 8 and contacts the reference surface, ensuring that the two cross beams 1 are in the same plane, and the device is positioned in the longitudinal position of the vehicle body through the rangefinder 4, so that the module 6 can slide on the cross beam 1 along the length direction, so as to realize the imprinting of multiple marks at different positions in the transverse direction of the vehicle body, and achieve the purpose of synchronous and in-phase positioning of multiple rubber blocks.

[0038] See also Figure 2 , 3 、5 as shown:

[0039] Preferably, side sliding grooves 101 are provided on the side walls of both sides of the beam 1 along the length direction, and a slider assembly is installed in the side sliding grooves 101. Both sides of the module 6 and the positioning block 8 are fixedly connected with upwardly extending ears, and the top of the ear is provided with a socket connected to the slider assembly.

[0040] Specifically, in this structure, the crossbeam 1 is a profile with a quadrilateral cross-section, and side slide grooves 101 are provided on both sides of the crossbeam 1 to cooperate with the slider assembly. The slider assembly includes a T-shaped slider 5 and a nut 501. The vertical section of the T-shaped slider 5 is formed with an external thread for cooperating with the nut 501. The ears on both sides of the module 6 and the positioning block 8 are provided with U-shaped sockets. During assembly, the T-shaped slider 5 is slidably connected to the side slide groove 101, and the module 6 and the positioning block 8 are fixedly connected to the T-shaped slider 5 by cooperating with the U-shaped socket on the ear through the nut 501.

[0041] See also Figure 3 As shown:

[0042] Preferably, the module 6 and the positioning block 8 are both rectangular structures, and their lengths are greater than the width of the beam 1. A groove for accommodating the printing block 7 is provided on the lower surface of the module 6, and the handle 9 passes through the module 6 from the upper part and is connected to the printing block 7.

[0043] Specifically, in the structure, the module 6 accommodates the printing block 7 through a groove, and the printing block 7 can be installed in the groove of the module 6 so as to move up and down in the groove. A spring is connected between the top wall of the groove and the printing block 7, and the printing block 7 is kept inside the module 6 by the spring. The handle 9 passes through the module 6 from the upper part and is connected to the printing block 7. When in use, the printing block 7 is forced to overcome the elastic force of the spring and extend out of the groove of the module 6 by pressing the handle 9. An ink cartridge is installed in the printing block 7, and ink is provided to the lower surface of the printing block 7 through the ink cartridge, so that the printing block 7 produces an imprint on the surface of the bottom frame.

[0044] See also Figure 2 As shown:

[0045] Preferably, an upper groove 102 is provided on the upper surface of the beam 1 along the length direction, and the upper groove 102 is slidably connected to the pull rod 2. Positioning pieces are installed at both ends of the pull rod 2. The positioning pieces are top screws 201 in the prior art. The top screws 201 are threadedly connected to the pull rod 2. The top screws 201 are rotated so that the end thereof can abut against the bottom of the upper groove 102, thereby locking the beam 1 and the pull rod 2. In this structure, the two beams 1 are transitionally connected by the pull rod 2, and the pull rod 2 is slidably connected to the upper groove 102, and the top screws 201 can be used to lock the extended length of the two beams 1 at any length, which is beneficial to improving the practicality of the device.

[0046] See also Figure 3 , 4 As shown:

[0047] Preferably, a positioning mark hole 801 is opened on one side of the positioning block 8, and the mark hole 801 is concentric with the longitudinal positioning point marked on the stainless steel reference plane at the bottom of the vehicle body structure.

[0048] Preferably, the side wall of the beam 1 is engraved with a marking line, and the marking line corresponds to the module 6, so that the moving position of the module 6 on the beam 1 can be intuitively seen;

[0049] See also Figure 6 As shown:

[0050] Preferably, the sliding mechanism 3 includes a support seat 301 fixedly connected to the cross beam 1, and both ends of the support seat 301 are rotatably connected with pulleys 302. Specifically, the middle part of the support seat 301 is fixedly connected to the cross beam 1 by bolts, and ear plates are formed on both sides of both ends of the support, and the ear plates are penetrated by a wheel axle 303. The two ends of the support seat 301 are rotatably connected with the pulley 302 through the wheel axle 303, and the end of the wheel axle 303 is installed with a wheel axle nut 304. When in use, the pulley 302 of the sliding mechanism 3 is inserted into the longitudinal slide groove of the stainless steel reference plane at the bottom of the vehicle body structure, which is conducive to ensuring that the two cross beams 1 are on the same horizontal plane;

[0051] In the above technical solution, the utility model provides a vehicle body underframe small parts positioning device, the working principle is:

[0052] First, the position principle is clear. The hand brake handle end installed on the vehicle is the first end, and the other end is the second end. When a person stands in the vehicle structure with his back to the first end and facing the second end, the left hand end is the first side and the right hand end is the second side. Therefore, the relationship between the components of the small parts positioning device of the vehicle body chassis is as follows:

[0053] See also Figure 1 As shown, the pull rod 2 is inserted into the upper slide groove 102 on the first and second side beams 1, and the sliding mechanism 3 on the first and second side beams 1 is adjusted along the transverse direction of the vehicle body structure, so that the pulleys 302 of the sliding mechanism 3 at both ends of the positioning device are inserted into the longitudinal slide groove of the stainless steel reference plane at the bottom of the vehicle body structure, ensuring that the two beams 1 are in the same horizontal plane, and tightening the top screw 201 to fix the pull rod 2, the first and second side beams 1 together;

[0054] Fix the rangefinder 4 at the end of the upper slide groove 102 perpendicular to the first and second side beams 1 (the front end of the rangefinder 4 is in the same plane as the positioning mark hole 801 of the positioning block 8); the side slide groove 101 of the beam 1 is marked with a marking line, the T-shaped slider 5 slides into the side slide groove 101 of the beam 1, adjust the T-shaped slider 5 to the marking line corresponding to the side slide groove 101, and insert the module 6 fixing ear into the T-shaped slider 5; tighten the nut 501 at the end of the T-shaped slider 5; fix the module 6 on the beam 1, and then insert the positioning block 8 fixing ear into the T-shaped slider 5, tighten the nut 501 at the end of the T-shaped slider 5, so that the positioning block 8 is fixed on the beam 1.

[0055] Directions:

[0056] The staff operates the handle 9 to horizontally place the positioning device on the center line of the bogie on the stainless steel reference plane at the bottom of the car body structure, and the pulley 302 of the sliding mechanism 3 is inserted into the two parallel longitudinal slide grooves of the stainless steel reference plane at the bottom of the car body structure to achieve the crossbeam 1 being on the same horizontal plane; the device is adjusted by the handle 9 to make the front end marking holes 801 of the positioning blocks 8 on the first and second side crossbeams 1 concentric with the longitudinal positioning points marked on the stainless steel reference plane at the bottom of the car body structure, and the handle 9 is pressed to make the lower part of the positioning block 8 contact with the stainless steel reference plane at the bottom of the car body structure. The device can achieve four Point positioning, then, start the button of the distance meter 4, measure the longitudinal vertical distance from the distance meter 4 to the second end wall, confirm that the longitudinal dimension value displayed by the distance meter 4 meets the technical requirements, press the handle 9 on the module 6, the printing block 7 moves vertically downward along the guide groove in the module 6 and contacts with the stainless steel reference plane at the bottom of the vehicle body structure, and prints out the contour line of the equal size of the printing block 7 on the plane, that is, this contour line is the standard positioning size contour position; release the handle 9, so that the handle 9 loses pressure, and the printing block 7 returns to the inside of the module 6, thereby realizing the horizontal positioning of multiple rubber blocks at one time, and repeating this process 8-10 times to realize the vehicle rubber block positioning work.

[0057] 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 small-part positioning device for a vehicle underframe, characterized in that: include: two cross beams (1); A pull rod (2) that is in a straight line shape and fixedly connects the two cross beams (1); as well as A sliding mechanism (3) and a distance meter (4) fixedly connected to the end of the crossbeam (1); A positioning block (8) is installed at the end of the crossbeam (1) away from the sliding mechanism (3); a module (6) is slidably connected between the crossbeam (1) and the sliding mechanism (3); a printing block (7) that can be extended by pressing is installed in the module (6); a handle (9) is installed on the top of the module (6) for driving the printing block (7) to extend and to print a mark that matches the shape of the small part of the chassis.

2. A vehicle body underframe small parts positioning device according to claim 1, characterized in that; Side sliding grooves (101) are provided on both side walls of the crossbeam (1) along the length direction, and a slider assembly is installed in the side sliding grooves (101). Both sides of the module (6) and the positioning block (8) are fixedly connected with upwardly extending ears, and the top of the ear is provided with a socket connected to the slider assembly.

3. A vehicle body underframe small parts positioning device according to claim 2, characterized in that; The module (6) and the positioning block (8) are both rectangular parallelepiped structures, and their lengths are greater than the width of the crossbeam (1). A groove for accommodating the printing block (7) is provided on the lower surface of the module (6), and the handle (9) passes through the module (6) from the upper part of the module (6) and is connected to the printing block (7).

4. A vehicle body underframe small parts positioning device according to claim 1 or 2, characterized in that; An upper slide groove (102) is provided on the upper surface of the crossbeam (1) along the length direction. The upper slide groove (102) is slidably connected to the pull rod (2). Positioning pieces are installed at both ends of the pull rod (2) for locking the extended length of the two crossbeams (1) at any length.

5. A vehicle body underframe small parts positioning device according to claim 4, characterized in that ； The positioning member is a top screw (201).

6. A vehicle body underframe small parts positioning device according to claim 1, characterized in that ； A marking hole (801) for positioning is provided on one side of the positioning block (8).

7. A vehicle body underframe small parts positioning device according to claim 1, characterized in that ； The side wall of the crossbeam (1) is marked with a marking line.

8. A vehicle body underframe small parts positioning device according to claim 1, characterized in that ； The sliding mechanism (3) comprises a support seat (301) fixedly connected to the crossbeam (1), and pulleys (302) are rotatably connected at both ends of the support seat (301).

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