Modular clamping adjustment device

Abstract

The utility model discloses a modularization clamping adjusting device, including crossbeam, the left and right two sides of crossbeam all are provided with open slot, all be provided with connecting rod in each open slot, the lower extreme of each connecting rod all is connected with the oil cylinder, the lower surface of each oil cylinder all is provided with fixed baseplate, the upper end surface both sides of crossbeam all are provided with a lifting lug for hoisting, the upper end surface of crossbeam between two lifting lugs all is equipped with connecting lug ear, is provided with telescopic connecting rod on connecting lug ear, the other end of telescopic connecting rod is connected with side wall unit fixed clamp. The utility model integrates the deflection prefabrication and diagonal line adjustment function to the same set modularization component, avoided the trouble of replacing tooling many times when general assembly, and simultaneously, the flexibility is strong, through the adjustable design of oil cylinder and telescopic structure, can adapt the general assembly demand of different specifications aluminum alloy car body.

Description

Technical Field

[0001] This utility model relates to an adjustment device, and more particularly to a modular clamping adjustment device. Background Technology

[0002] The primary function of a rail passenger vehicle is to carry passengers. When carrying passengers, the height of the longitudinal center of the car body will decrease compared to when unloaded, causing a change in the height difference between the vehicle door sill and the platform. If the deflection of the car body is not consistently controlled, it will affect the normal opening and closing of the doors, increasing the risk of vehicle malfunctions. Lightweighting is a current trend in rail vehicle development. Reducing the weight of the car body usually leads to a decrease in stiffness, which is more pronounced when the car body is carrying passengers, requiring a larger pre-set upper deflection value during manufacturing. Therefore, it is essential to pre-set a certain vertical deflection along the longitudinal direction of the car body during the manufacturing process, while maintaining the stability of this upper deflection.

[0003] Currently, the pre-deflection of aluminum alloy subway car bodies in China is mainly ensured by pre-fabricating a certain amount of anti-deformation on the underframe, and even the side walls and roof, before the car body assembly welding. This can be achieved by tightening with tooling and pre-setting the deflection, followed by flame adjustment. However, during the assembly welding of the underframe, end walls, side walls, and roof of the car body, pre-fabricating the deflection in advance, combined with fixed tooling to pre-fabricate a reasonable anti-deformation, ensures that the key dimensions of the entire car body meet the design requirements after welding. However, this method not only requires a large number of tooling for anti-deformation, but the springback amount is also somewhat uncertain, fluctuating within a certain range. Ultimately, this leads to large manufacturing tolerances for the car body and significant residual stress in the structure, which is detrimental to the performance guarantee throughout the entire life cycle. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the problems of the prior art and provide a modular clamping and adjustment device that can adjust the deflection and diagonal of the vehicle body, and is simple to operate, has a wide range of applications, and a simple structure.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A modular clamping and adjustment device includes a crossbeam with openings on both its left and right sides. Each opening has a connecting rod, and the lower end of each connecting rod is connected to a hydraulic cylinder. Each hydraulic cylinder has a fixed base underneath it. A lifting ring for hoisting is provided on both sides of the upper end face of the crossbeam. A connecting lug is provided on the upper end face of the crossbeam between two lifting rings. A telescopic connecting rod is provided on the connecting lug, and the other end of the telescopic connecting rod is connected to a side wall unit fixing clamp.

[0006] Furthermore, the connecting lugs are arranged in pairs, and a pair of symmetrically arranged connecting lugs are connected to corresponding telescopic connecting rods by fixing pins.

[0007] Furthermore, the upper end of the connecting rod is connected to the crossbeam via a first connecting pin, and the lower end is connected to the hydraulic cylinder via a second connecting pin.

[0008] Furthermore, each of the two side walls of the opening slot is provided with a symmetrical first connecting hole, each of the connecting rods is provided with a second connecting hole at the upper end and a third connecting hole at the lower end. The upper end of the connecting rod is placed in the corresponding opening slot on the crossbeam, and the connecting rod and the crossbeam are connected by the corresponding first connecting pin through the first connecting hole and the second connecting hole.

[0009] Furthermore, each of the cylinders has a connecting block with a U-shaped groove at its telescopic end. Symmetrical fourth connecting holes are provided on the two side walls of the U-shaped groove. The lower end of the connecting rod is placed in the corresponding U-shaped groove on the connecting block, and the connecting rod and the cylinder are connected by the corresponding second connecting pin through the third connecting hole and the fourth connecting hole.

[0010] The crossbeam is lifted into the upper plane of the subway car body underframe using lifting rings. The lifting rings serve as auxiliary tools for lifting and positioning the crossbeam, improving assembly efficiency. The crossbeam is used to press against the upper surface of the underframe. As the core load-bearing component, the crossbeam transmits the pressure for deflection adjustment by pressing against the underframe.

[0011] The telescopic connecting rod is connected to the crossbeam by a fixing pin, and the other end of the telescopic connecting rod is connected to the side wall unit fixing clamp. The telescopic connecting rod has adjustable length and is used to correct the diagonal deviation of the vehicle body. The side wall unit fixing clamp is fixedly clamped to the side wall unit door column. The clamping of the side wall door column is both a positioning component of the side wall and participates in the adjustment of the diagonal size of the vehicle body.

[0012] The connecting rod is connected to the hydraulic cylinder and the crossbeam by the first and second connecting pins, and the hydraulic cylinder and the crossbeam are connected in series to realize the transmission of power.

[0013] The fixed base under the hydraulic cylinder is connected and fixed to the T-slot on the ground. The combination of the hydraulic cylinder and the fixed base can provide a power source for deflection adjustment. By controlling the displacement of the crossbeam through tension, the deflection value of the vehicle body can be adjusted.

[0014] When adjusting the deflection, the crossbeam is pressed against the base frame by the hydraulic cylinder, and the connecting rod is pressed down to achieve the pre-deflection effect. The deflection is adjusted by the hydraulic cylinder. The diagonal of the car body is adjusted by the side wall unit fixing clamp and telescopic connecting rod.

[0015] The beneficial effects of this utility model are as follows: This invention uses a hydraulic cylinder fixed in a T-slot on the ground as a power source. The hydraulic cylinder, connecting rod, and crossbeam are connected in series via a first connecting pin and a second connecting pin. The hydraulic cylinder pulls the crossbeam to press against the base frame, and then the connecting rod applies downward pressure, directly applying a preset downward pressure to the vehicle body, ultimately forming an upward arch deflection. The deflection value can be precisely controlled by adjusting the output force of the hydraulic cylinder. While adjusting the deflection, the clamping position of the side wall unit fixing fixture is finely adjusted, and the length of the telescopic connecting rod is adjusted to directly correct the diagonal deviation of the vehicle body. No additional tools are required to switch, integrating the deflection pre-setting and diagonal adjustment functions into the same modular component, avoiding the trouble of changing tooling multiple times during final assembly. At the same time, it is highly flexible, and the adjustable design of the hydraulic cylinder and telescopic structure can adapt to the final assembly requirements of aluminum alloy vehicle bodies of different specifications.

[0016] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some schematic diagrams of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a modular clamping and adjustment device according to the present invention.

[0019] 1-Crossbeam, 2-Opening slot, 3-Connecting rod, 4-First connecting pin, 5-Oil cylinder, 6-Connecting block, 7-Second connecting pin, 8-Fixed base, 9-Lifting ring, 10-Connecting lug, 11-Fixed pin, 12-Telescopic connecting rod, 13-Side wall unit fixing clamp. Detailed Implementation

[0020] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0023] Example: Figure 1 As shown: A modular clamping and adjusting device includes a crossbeam 1. Opening slots 2 are provided on both the left and right sides of the crossbeam 1. Symmetrical first connecting holes are provided on the two side walls of each opening slot 2. A downward connecting rod 3 is provided in each opening slot 2. A second connecting hole is provided at the upper end of each connecting rod 3 and a third connecting hole is provided at the lower end. The upper end of the connecting rod 3 is placed in the corresponding opening slot 2 on the crossbeam 1, and the connecting rod 3 and the crossbeam 1 are connected by corresponding first connecting pins 4 through the first connecting holes and the second connecting holes.

[0024] Each connecting rod 3 is connected to a hydraulic cylinder 5 at its lower end. Each hydraulic cylinder 5 has a connecting block 6 with a U-shaped groove at its telescopic end. Symmetrical fourth connecting holes are provided on the two side walls of the U-shaped groove. The lower end of the connecting rod 3 is placed in the corresponding U-shaped groove on the connecting block 6. The connecting rod 3 and the hydraulic cylinder 5 are connected by the corresponding second connecting pin 7 through the third and fourth connecting holes.

[0025] Each hydraulic cylinder 5 is fitted with a fixed base 8 underneath.

[0026] A lifting ring 9 for hoisting is provided on both sides of the upper end face of the crossbeam 1. A connecting lug 10 is provided on the upper end face of the crossbeam 1 between the two lifting rings 9. The connecting lug 10 is connected to a corresponding telescopic connecting rod 12 by a fixing pin 11. The other end of the telescopic connecting rod 12 is connected to a side wall unit fixing clamp 13.

[0027] During use, the crossbeam 1 is smoothly hoisted into the designated position on the upper plane of the base frame using the lifting ring 9. The fit between the crossbeam 1 and the base frame is confirmed, but not yet fixed. One end of the telescopic connecting rod 12 is aligned with the pre-reserved connecting lug 10 on the crossbeam 1, and the fixing pin 11 is inserted and locked, ensuring that the connecting rod 3 and the crossbeam 1 are not loose. Then, the side wall unit fixing clamp 13 is aligned with the side wall unit door post, and the clamp position is adjusted before clamping, ensuring the initial relative position of the side wall unit and the base frame is accurate. Next, one end of the connecting rod 3 is connected to the crossbeam 1 using the first connecting pin 4, and the other end is connected to the hydraulic cylinder 5 using the second connecting pin 7. Finally, the lower fixing base 8 of the hydraulic cylinder 5 is fixed... Insert bolts into the T-slot on the ground and tighten them to ensure that the hydraulic cylinder 5 is subjected to vertical force; start the hydraulic cylinder 5 control system, slowly apply tension, drive the crossbeam 1 to press against the base frame, and transmit pressure downward through the connecting rod 3; monitor the camber of the vehicle body in real time with a deflectometer, and adjust the tension of the hydraulic cylinder 5 according to the reading until the deflection value reaches the design requirements, and lock the state of the hydraulic cylinder 5; after the deflection is locked, measure the diagonal length of the vehicle body; if there is a deviation, adjust the clamping position of the side wall unit fixing clamp 13 (fine-tune the side wall offset), or the length of the telescopic connecting rod 12 (correct the distance between the crossbeam 1 and the side wall), until the diagonal deviation is controlled within the qualified range.

[0028] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A modular clamping and adjusting device, comprising a crossbeam, characterized in that: The crossbeam has openings on both its left and right sides, and each opening has a connecting rod. The lower end of each connecting rod is connected to a hydraulic cylinder, and each hydraulic cylinder has a fixed base underneath it. The upper end face of the crossbeam has a lifting ring on each side for hoisting. The upper end face of the crossbeam between two lifting rings has a connecting lug, and the connecting lug has a telescopic connecting rod. The other end of the telescopic connecting rod is connected to a side wall unit fixing clamp.

2. The modular clamping and adjustment device according to claim 1, characterized in that: The connecting lugs are arranged in pairs, and a pair of symmetrically arranged connecting lugs are connected to the corresponding telescopic connecting rods by a fixing pin.

3. The modular clamping and adjustment device according to claim 2, characterized in that: The upper end of the connecting rod is connected to the crossbeam via a first connecting pin, and the lower end is connected to the hydraulic cylinder via a second connecting pin.

Images