Cross shaft universal joint auxiliary assembling device

Abstract

The utility model relates to a kind of cross shaft universal coupling auxiliary assembly device, including base, the middle part of base is provided with limiting mechanism, adjusting mechanism is provided in base, the moving end of adjusting mechanism is provided with support rod, support rod is fixed with mounting plate, one side of mounting plate is rotatably installed with shell, shell is provided with clamping mechanism, clamping mechanism includes fixed plate and four piston cylinders annularly arranged on the outside of shell, piston cylinder is slidably connected with piston plate, one end of piston plate is fixed with piston rod, one side of piston rod is fixed with clamping plate, air pump and gas tank are sequentially fixed on mounting plate, and the gas outlet end of air pump and the side wall of gas tank are connected by air inlet pipe and communicated.The cross shaft universal coupling auxiliary assembly device adopts annular pressure chamber and multidirectional pneumatic piston group structure, piston is synchronously radially pressed by air pump centralized gas supply driving, forms circumferential uniform clamping force, to carry out stable clamping to flange, avoid offset when assembling.

Description

Technical Field

[0001] This utility model relates to the field of universal coupling technology, specifically to an auxiliary assembly device for a cross-shaft universal coupling. Background Technology

[0002] Universal couplings utilize the characteristics of their mechanism to enable continuous rotation of two connected shafts even when they are not on the same axis and there is an angle between their axes, and reliably transmit torque and motion.

[0003] Chinese patent document CN202320656944.9, in the related technology, proposes a universal joint assembly fixture. During assembly, the central shaft of the universal joint is first inserted through a placement channel, with the lower end of the central shaft placed on the upper end of the placement slot of the lower placement frame. Then, the fixing bolts are rotated, causing the upper placement frame to move downwards and cooperate with the lower placement frame to clamp and fix the central shaft of the universal joint. An anti-slip layer prevents the central shaft of the universal joint from rotating. Finally, the flange on one side of the universal joint's cross shaft is assembled to both ends of the central shaft of the universal joint, and the other half of the universal joint... The flange of the coupling is placed on the upper end of the lower clamping plate in the placement channel. Then, the electric cylinder is activated to move the push rod down, so that the upper clamping plate and the lower clamping plate cooperate to clamp the flange. The drive motor rotates the screws with opposite thread directions, causing the slider to move the other half of the universal coupling on the fixing mechanism. After that, the individual flange is installed with the flange on the central shaft of the universal coupling through the cross shaft. The adjusting motor can rotate the adjusting gear, causing the housing to rotate, so that the flange on the central shaft of the universal coupling can be directly connected to the individual flange, completing the quick assembly.

[0004] Regarding the aforementioned technologies, the device uses an upper clamping plate and a lower clamping plate to clamp and fix the coupling shaft and flange in the vertical direction. However, this design has significant drawbacks: relying solely on the pressure applied by the upper and lower clamping plates, the flange is prone to radial displacement due to uneven clamping force. The clamping module needs to be replaced for flanges of different sizes, and rigid clamping can easily cause indentations on the workpiece surface. In view of this, an auxiliary assembly device for a cross-shaft universal coupling is proposed to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide an auxiliary assembly device for a cross-shaft universal coupling, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary assembly device for a universal joint, comprising a base, a limiting mechanism in the middle of the base, an adjustment mechanism inside the base, a support rod at the moving end of the adjustment mechanism, a mounting plate fixed on the support rod, a housing rotatably mounted on one side of the mounting plate, and a clamping mechanism on the housing.

[0007] The clamping mechanism includes a fixed plate and four piston cylinders arranged in a ring on the outside of the housing. A piston plate is slidably connected inside the piston cylinder. A piston rod is fixed to one end of the piston plate, and a clamping plate is fixed to one side of the piston rod.

[0008] An air pump and an air storage tank are fixed in sequence on the mounting plate. The air outlet of the air pump is connected to the side wall of the air storage tank through an air inlet pipe, and the end of the piston cylinder is connected to the air storage tank through an air delivery pipe.

[0009] Furthermore, a first solenoid valve is fixed on the gas supply.

[0010] Furthermore, a vent pipe is fixed to the side wall of the piston cylinder, and a second solenoid valve is installed on the vent pipe.

[0011] Furthermore, the housing has a through hole for the piston rod to slide, and a spring is sleeved on the piston rod, with both ends of the spring fixed to one side of the clamping plate and the inside of the housing, respectively.

[0012] Furthermore, the mounting plate is provided with a rotating mechanism for driving the housing to rotate.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The auxiliary assembly device for the universal joint adopts an annular pressure equalizing chamber and a multi-directional pneumatic piston assembly structure. The piston is driven by a centralized air pump to apply pressure radially synchronously, forming a uniform circumferential clamping force, thereby stably clamping the flange and preventing displacement during assembly. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the mounting plate and housing of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the air inlet pipe and air storage tank of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Base; 2. Clamping frame; 3. Adjustment mechanism; 4. Clamping mechanism; 401. Air pump; 402. Air inlet pipe; 403. Air storage tank; 404. Air delivery pipe; 405. First solenoid valve; 406. Air vent pipe; 407. Second solenoid valve; 408. Piston cylinder; 409. Piston rod; 410. Spring; 411. Clamping plate; 412. Piston plate; 5. Support rod; 6. Mounting plate; 7. Housing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 An auxiliary assembly device for a universal joint in this embodiment includes a base 1, a limiting mechanism 2 in the middle of the base 1, an adjustment mechanism 3 inside the base 1, a support rod 5 at the moving end of the adjustment mechanism 3, a mounting plate 6 fixed on the support rod 5, a housing 7 rotatably mounted on one side of the mounting plate 6, and a clamping mechanism 4 on the housing 7.

[0022] The clamping mechanism 4 includes a fixed plate 413 and four piston cylinders 408 arranged in a ring on the outside of the housing 7. A piston plate 412 is slidably connected inside the piston cylinder 408. A piston rod 409 is fixed to one end of the piston plate 412. A clamping plate 411 is fixed to one side of the piston rod 409. The inner side of the clamping plate 411 may be provided with anti-slip texture or elastic pad to ensure that the workpiece is stable and does not slip when clamped.

[0023] An air pump 401 and an air storage tank 403 are fixed sequentially on the mounting plate 6. The air outlet of the air pump 401 is connected to the side wall of the air storage tank 403 through an air inlet pipe 402. The end of the piston cylinder 408 is connected to the air storage tank 403 through an air delivery pipe 404.

[0024] The mounting plate 6 is provided with a rotating mechanism 8 for driving the housing 7 to rotate.

[0025] The structure and working principle of the limiting mechanism 2 and the rotating mechanism 8 in this utility model have been disclosed in a universal coupling assembly tooling disclosed in Chinese patent application number CN202320656944.9. The limiting mechanism 2 and the rotating mechanism 8 are prior art, and their working principle is the same as that in this solution.

[0026] When the air pump 401 fills the air storage tank 403 with air, the high-pressure gas enters the piston cylinder 408 through the air delivery pipe 404, pushing the piston rod 409 to drive the clamping plate 411 to move radially, thereby achieving a ring-shaped clamping of the workpiece.

[0027] The gas supply line is equipped with a first solenoid valve 405. When the solenoid valve coil is energized, the valve core moves to open the gas supply channel, allowing high-pressure gas from the gas storage tank 403 to enter the piston cylinder 408. When the power is off, the valve core resets and cuts off the gas flow, maintaining the gas pressure inside the piston cylinder 408.

[0028] Meanwhile, a vent pipe 406 is fixed to the side wall of the piston cylinder 408, and a second solenoid valve 407 is provided on the vent pipe 406. When it is necessary to release the clamp, the second solenoid valve 407 is opened at the same time, and the gas in the piston cylinder 408 is quickly discharged through the vent pipe 406. With the reset force of the spring 410, the clamping plate 411 is accelerated to release, avoiding residual clamping force caused by air pressure retention.

[0029] In addition, the housing 7 has a through hole for the piston rod 409 to slide, and a spring 410 is sleeved on the piston rod 409. The two ends of the spring 410 are fixed to one side of the clamping plate 411 and the inside of the housing 7, respectively, to provide the clamping plate 411 with the reset power, ensuring reliable release when the air pressure disappears, and at the same time buffering the impact force during the clamping process.

[0030] The working principle of the above embodiments is as follows:

[0031] The universal joint component to be assembled is placed on the limiting mechanism 2 in the middle of the base 1. The limiting structure determines the reference position of the workpiece and ensures that the axis is aligned with the center of the device.

[0032] The air pump 401 fills the air storage tank 403 with air, forming a stable high-pressure air source. When clamping is required, the solenoid valve on the air supply pipe 404 opens, and the high-pressure gas in the air storage tank 403 enters the four piston cylinders 408 distributed in a ring on the outside of the housing 7 through the air supply pipe 404.

[0033] High-pressure gas pushes the piston plate 412 inside the piston cylinder 408 to slide, causing the piston rod 409 to extend radially along the through hole of the housing 7, so that the clamping plate 411 at the end closes towards the center.

[0034] The spring 410 fitted on the piston rod 409 is compressed when clamped, storing the reset potential energy, while buffering the clamping impact force and protecting the workpiece surface.

[0035] The rotating mechanism 8 on the mounting plate 6 drives the housing 7 to rotate 360° around its rotating connecting shaft, causing the clamped workpiece to rotate synchronously, so that the pin hole of the cross shaft and the mounting hole of the fork head are quickly aligned.

[0036] After the angle is aligned, the cross shaft is inserted into the fork pin hole manually or by a robotic arm, or a bolt connection is made. The stable clamping force of the clamping mechanism 4 is used to keep the workpiece in position and avoid shaking during assembly.

[0037] After assembly, close the solenoid valve of the gas supply pipe 404 to cut off the gas supply, and at the same time open the solenoid valve of the vent pipe 406 on the side wall of the piston cylinder 408 to quickly release the residual gas pressure inside the piston cylinder 408.

[0038] Spring 410 resets: After losing air pressure support, spring 410 releases potential energy, pushing piston rod 409 to drive clamping plate 411 back to the initial position and release the workpiece.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary assembly device for a universal joint, comprising a base (1), characterized in that: A limiting mechanism (2) is provided in the middle of the base (1), an adjustment mechanism (3) is provided inside the base (1), a support rod (5) is provided at the moving end of the adjustment mechanism (3), an mounting plate (6) is fixed on the support rod (5), a housing (7) is rotatably mounted on one side of the mounting plate (6), and a clamping mechanism (4) is provided on the housing (7). The clamping mechanism (4) includes a fixed plate (413) and four piston cylinders (408) arranged in a ring on the outside of the housing (7). A piston plate (412) is slidably connected inside the piston cylinder (408). A piston rod (409) is fixed at one end of the piston plate (412), and a clamping plate (411) is fixed on one side of the piston rod (409). An air pump (401) and an air storage tank (403) are fixed on the mounting plate (6) in sequence. The air outlet of the air pump (401) is connected to the side wall of the air storage tank (403) through an air inlet pipe (402). The end of the piston cylinder (408) is connected to the air storage tank (403) through an air delivery pipe (404).

2. The auxiliary assembly device for a universal joint according to claim 1, characterized in that: A first solenoid valve (405) is fixed on the gas supply.

3. The auxiliary assembly device for a universal joint according to claim 1, characterized in that: The piston cylinder (408) has a vent pipe (406) fixed to its side wall, and a second solenoid valve (407) is provided on the vent pipe (406).

4. The auxiliary assembly device for a universal joint according to claim 1, characterized in that: The housing (7) has a through hole for the piston rod (409) to slide. A spring (410) is sleeved on the piston rod (409). The two ends of the spring (410) are fixed to one side of the clamping plate (411) and the inside of the housing (7), respectively.

5. The auxiliary assembly device for a universal joint according to claim 1, characterized in that: The mounting plate (6) is provided with a rotating mechanism (8) for driving the housing (7) to rotate.

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