A double-station wheel set press-fitting, pressure-checking and unloading integrated equipment

Abstract

The present application relates to the technical field of press-fitting, pressure testing and unloading of wheelsets, and in particular to an integrated double-station wheelset press-fitting, pressure testing and unloading equipment, including a base, on which a support frame is symmetrically arranged along its length direction, and a press-fitting and unloading mechanism and a pressure testing mechanism are installed on the base. The press-fitting and unloading mechanism designed by the present invention can perform press-fitting, pressure testing and unloading processing on the wheelset on the base through the cooperation between the support frame and the pressure testing mechanism, thereby avoiding the tediousness of performing press-fitting, pressure testing and unloading processing on the wheelset separately on different equipment, saving time for transferring the wheelset, and having a high degree of integration; in the pressure testing mechanism of the present invention, the lower pressure sleeve can drive the lower pressure block to move synchronously on the lifting frame, and then the lower pressure block can change its position on the wheel axle when applying pressure to the wheel axle, and then the data of the lower pressure block applying pressure at different positions of the wheel axle can be obtained, thereby increasing the amount of pressure testing data and making the pressure testing more representative.

Description

Technical Field

[0001] The present application relates to the technical field of wheel set press-fitting, pressure testing and unloading, and in particular to a double-station wheel set press-fitting, pressure testing and unloading integrated equipment. Background Art

[0002] A wheelset refers to the combination of wheels and axles on a vehicle, which are mainly used to support the vehicle and transmit power. A wheelset is usually composed of axles, tires, rims and other components. In vehicles such as cars and trains, the wheelset bears the weight of the entire vehicle and transmits power to enable the vehicle to move.

[0003] In the existing wheelset forming process, the wheel hub is usually installed on the axle by pressing. When the wheelset is pressed on the axle, the tire is installed on the pressed wheel hub and the pressed wheelset is transferred to the pressure testing equipment for pressure testing. If the pressure test fails, the wheel hub needs to be removed from the axle.

[0004] The above-mentioned pressing, pressure testing and unloading processes need to be carried out on different equipment without integration, which takes a long time in the subsequent wheelset transfer process, affecting the efficiency of pressing, pressure testing and unloading of the wheelset.

[0005] In the process of wheelset pressure inspection, it is necessary to apply pressure to the wheelset, such as a wheelset press-fitting and unloading machine with publication number CN202922176U, which includes an integral gantry frame, a press-fitting head, and a telescopic mechanism is provided at the base of the integral gantry frame and the corresponding positions of the left and right heads of the upper crossbeam, and a pull rod is provided on the base of the press-fitting head. The beneficial effects of this prior art are: the mechanism is exquisite and special, the structure is reasonable, and it is easy to use. There is no need to move the movable beam or slider back and forth to perform back-pressure tests and other tasks. Pressure inspection or extrusion tests and back-pressure tests can be achieved through pull rods or telescopic mechanisms. The telescopic head can also unload the wheelset, meeting the needs of users and the market.

[0006] However, the above-mentioned prior art still has some defects in the process of wheelset pressure inspection: the position of the pressure application point in the above-mentioned prior art during the wheelset pressure inspection is unchanged, and thus only a single position can be subjected to force during the wheelset pressure inspection, and only data on the force at a single position can be obtained during the wheelset pressure inspection, and the pressure inspection result is not representative.

[0007] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the existing technology for the method of press-fitting, pressure-checking and unloading of wheelsets. Summary of the invention

[0008] In order to solve the above-mentioned technical problems, the present application provides a double-station wheel pair press-fitting, pressure testing and unloading integrated equipment, adopting the following technical solution: a double-station wheel pair press-fitting, pressure testing and unloading integrated equipment, comprising a base, on which support frames are symmetrically arranged along its length direction, and a press-fitting and unloading mechanism and a pressure testing mechanism are installed on the base.

[0009] The press-fitting and unloading mechanism comprises a reversing rod which is installed on the bottom of the base through a connecting protrusion, and the reversing rod is rotatably installed on the connecting protrusion through a bearing.

[0010] Two sliding sleeves are provided and are symmetrically arranged along the length direction of the reversing rod, and the limiting sliding sleeve is arranged on the reversing rod.

[0011] The press-fitting frame is installed on the top of the end of the sliding sleeve away from the base and is used for press-fitting the wheelset.

[0012] The unloading frame is installed at the bottom of the sliding sleeve close to the base and is used for unloading the wheelset.

[0013] The pressure detection mechanism comprises: a lifting frame, which is arranged directly above the two supporting frames.

[0014] Two pressing sleeves are provided and are symmetrically arranged along the length direction of the lifting frame, penetrate the lifting frame along the height direction of the lifting frame, and move synchronously along the length direction of the lifting frame.

[0015] The pressing block is arranged inside the pressing sleeve.

[0016] The electric slider is arranged on the part of the base between the two support frames and slides along the length direction of the base. A rangefinder is installed on the electric slider.

[0017] Preferably, a bidirectional cylinder 1 is installed on the side of the connecting protrusion away from the base through the cylinder seat, and connecting rings matching with the sliding sleeve on the same side are installed on the two telescopic ends of the bidirectional cylinder 1, and the connecting rings are installed on the corresponding sliding sleeve through bearings, a ratchet is installed on the reversing rod, and a pawl matching with the ratchet is installed on the bottom of the base.

[0018] Preferably, a limiting mechanism cooperating with the wheel axle is also installed on the base, and the limiting mechanism comprises: a limiting plate, which is arranged above the base and has an arc groove on one side close to the base.

[0019] Two connecting rods are provided and symmetrically arranged along the width direction of the base. They are slidably arranged along the height direction of the base, and one end of the connecting rods close to the limiting plate is jointly installed on the limiting plate.

[0020] The return spring is sleeved on the connecting rod, one end of which is installed on the limit plate, and the other end away from the limit plate is installed on the base.

[0021] The linkage plate is jointly installed at the bottoms of two connecting rods, and a through groove is formed in the linkage plate.

[0022] The driving connecting plate is arranged in an L-shaped structure, and its vertical section is installed on any one of the sliding sleeves through a bearing, and one end of its horizontal section far from its vertical section abuts against the inside of the through groove.

[0023] Preferably, one end of the horizontal section of the driving connecting plate far from its vertical section is successively provided with an inclined section one and an inclined section two from near to far from its vertical section, and a horizontal connecting section is arranged between the inclined section one and the inclined section two.

[0024] A cavity is formed on one side of the support frame far from the base, a connecting spring rod is installed at the bottom of the cavity, an arc-shaped plate is installed on the connecting spring rod, a second ball is installed on the arc-shaped plate, and an arc-shaped rubber pad is also installed on one side of the support frame far from the base.

[0025] Preferably, extrusion frames corresponding to the pressing frames are arranged on the sliding sleeves, and the extrusion frames are located at the bottoms of the corresponding sliding sleeves. Airtight cylinders are installed on opposite surfaces of the extrusion frames, and the openings face the corresponding unloading frames. Air inlet pipes communicating with the corresponding airtight cylinders are installed on the extrusion frames. A rubber ring and a gel ring are successively installed on the airtight cylinders along the pressing direction of the corresponding pressing frames, and a barometer is also installed on the airtight cylinders.

[0026] Preferably, a double-acting cylinder three is installed on the base through a cylinder seat. Push rods are installed on two telescopic ends of the double-acting cylinder three. Swing shafts are symmetrically installed on the base along its length direction through bearings, and swing rods that swing reciprocally are installed on the swing shafts.

[0027] Preferably, a U-shaped frame with an upward opening is arranged on the base. An elastic telescopic rod is arranged on one side of the vertical section of the U-shaped frame close to the support frame. A switch is installed on the telescopic end of the elastic telescopic rod. A marker pen is also installed on one side of the vertical section of the U-shaped frame close to the support frame. A light bulb electrically connected to the switch is also installed on the horizontal section of the U-shaped frame.

[0028] Preferably, the horizontal section of the U-shaped frame is limited and slidably arranged on the base through a linkage protrusion. A limiting rod penetrates through the upper part of the horizontal section of the U-shaped frame, and a plurality of limiting grooves matching the limiting rod are uniformly formed on the base along its width direction.

[0029] Preferably, a pressure gauge is installed at one end of the lower pressing block far from the lifting frame. A fitting block matching the wheel axle is installed on the pressure gauge, and an arc-shaped groove matching the wheel axle is formed on the fitting block.

[0030] An L-shaped pressure testing frame is installed on the base, and a lifting cylinder is installed on the horizontal section of the pressure testing frame. The telescopic end of the lifting cylinder is connected to the lifting frame. A two-way cylinder 2 is installed at the bottom of the lifting frame through the cylinder seat. The two telescopic ends of the two-way cylinder 2 are connected to the downward pressure sleeve on the same side.

[0031] Preferably, the base is symmetrically provided with an L-shaped limit frame along its length direction, the vertical section of the limit frame is installed on the base, and a ball bearing is installed at one end of the horizontal section of the limit frame away from the vertical section.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The press-fitting and unloading mechanism designed in the present invention can perform press-fitting, pressure testing and unloading processing on the wheelset on the base through the cooperation between the support frame and the pressure testing mechanism, thereby avoiding the tediousness of separately performing press-fitting, pressure testing and unloading processing on the wheelset on different equipment, saving the time of transferring the wheelset and having a high degree of integration.

[0034] 2. In the pressure testing mechanism of the present invention, the downward pressure sleeve can drive the downward pressure block to move synchronously on the lifting frame, and then the downward pressure block can change the position of the downward pressure block on the wheel axle when applying pressure to the wheel axle, and then the data when the downward pressure block applies pressure at different positions of the wheel axle can be obtained, thereby increasing the amount of pressure testing data and making the pressure testing more representative.

[0035] 3. The airtight cylinder of the present invention can form a closed space between the wheel hub and the axle through the cooperation of the rubber ring and the gel ring, and air is introduced into the airtight cylinder. If there are no cracks on the wheel hub when the wheel hub is pressed onto the axle, the barometer reading will be much greater than the external atmospheric pressure after a period of time. Otherwise, the barometer reading will be consistent with the external atmospheric pressure. The cracks on the pressed wheel hub can be effectively detected, which is also a part of the wheelset press pressure inspection, further improving the accuracy of the wheelset pressure inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a first three-dimensional structural schematic diagram of the present invention.

[0037] Figure 2 The present invention Figure 1 Schematic diagram of some three-dimensional structures.

[0038] Figure 3 It is a schematic diagram of the first three-dimensional structure of the present invention.

[0039] Figure 4 The present invention Figure 3 A partial enlarged view of point A.

[0040] Figure 5 The present invention Figure 1 A partial enlarged view of point B.

[0041] Figure 6 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention.

[0042] Figure 7 It is a schematic diagram of the three-dimensional installation structure between the extrusion frame, the airtight cylinder and the air intake pipe of the present invention.

[0043] Figure 8 It is a schematic diagram of the three-dimensional installation structure between the mold frame and the limit rod etc. of the present invention.

[0044] Fig. 9 The present invention Figure 8 A partial enlarged view of point D.

[0045] Fig.10 The present invention Figure 1 A partial enlarged view of point C.

[0046] Fig.11 It is a schematic diagram of the three-dimensional installation structure between the lifting frame, the pressing sleeve and the pressing block of the present invention.

[0047] Fig.12 It is a schematic diagram of the three-dimensional installation structure between the bidirectional cylinder 3, the push rod and the swing shaft of the present invention.

[0048] Fig.13 It is a schematic diagram of the three-dimensional installation structure between the supporting blocks of the present invention.

[0049] Fig.14 It is a schematic diagram of the three-dimensional installation structure between the support block and the rotating roller of the present invention.

[0050] Fig.15 It is a schematic diagram of the three-dimensional installation structure between the horizontal frame, the shell and the driving slider of the present invention.

[0051] Description of reference numerals: 1, base; 100, axle; 101, hub; 11, C-shaped frame; 12, elastic telescopic rod; 13, switch; 14, marker pen; 15, bulb; 16, limiting rod; 17, limiting groove; 18, limiting frame; 19, first ball; 2, support frame; 21, connecting spring rod; 22, arc-shaped plate; 23, second ball; 24, arc-shaped rubber pad; 3, press-fitting and withdrawing mechanism; 31, reversing rod; 32, sliding sleeve; 33, press-fitting frame; 34, withdrawing frame; 35, first double-acting cylinder; 351, connecting ring; 352, ratchet wheel; 353, pawl; 36, extrusion frame; 361, airtight cylinder; 362, air inlet pipe; 363, rubber ring; 364, gel ring; 365, barometer; 4, pressure detection mechanism; 41, lifting frame; 42, lower pressing sleeve; 43, lower pressing block; 431, pressure gauge; 432, fitting block; 433, arc-shaped groove; 44, electric slider; 45, rangefinder; 46, pressure detection machine frame; 47, lifting cylinder; 48, second double-acting cylinder; 5, limiting mechanism; 51, limiting plate; 52, arc-shaped groove; 53, connecting rod; 54, return spring; 55, linkage plate; 56, driving connecting plate; 6, adjusting assembly; 61, vertical protrusion; 62, rotating shaft; 63, driving motor; 64, fixed protrusion; 65, rotating connecting shaft; 66, towing rope; 67, adjusting part; 671, supporting spring rod; 672, C-shaped plate; 673, guiding shaft; 674, adjusting plate; 7, supporting block; 71, rotating roller; 72, supporting connecting block; 73, fixed connecting rod; 8, third double-acting cylinder; 81, pushing rod; 82, swing shaft; 83, swing rod; 9, horizontal machine frame; 91, housing; 92, driving slider; 93, transverse machine frame; 94, double-directional electric push rod; 95, press-fitting connecting frame; 96, reversing motor. Detailed implementation manners

[0052] The following further elaborates on this application Figures 1 to 15 in conjunction with the accompanying drawings.

[0053] The embodiment of this application discloses an integrated device for press-fitting, pressure detection, and withdrawal of a double-station wheel pair, which can press-fit two hubs onto the axle simultaneously in a double-station manner; and can perform integrated processing of press-fitting, pressure detection, and withdrawal of the wheel pair through this invention.

[0054] Embodiment 1:

[0055] Refer to Figure 1 and Figure 2 , an integrated device for press-fitting, pressure detection, and withdrawal of a double-station wheel pair, including a base 1, symmetrically arranged support frames 2 along the length direction of the base 1 for placing the axle 100, and a press-fitting and withdrawal mechanism 3 and a pressure detection mechanism 4 are installed on the base 1.

[0056] Refer to Figure 2The press-fitting and unloading mechanism 3 includes: a reversing rod 31, which is installed at the bottom of the base 1 through a connecting protrusion, and the reversing rod 31 is rotatably installed on the connecting protrusion through a bearing.

[0057] Two sliding sleeves 32 are provided and are symmetrically arranged along the length direction of the reversing rod 31 , and the limiting sliding sleeves are arranged on the reversing rod 31 .

[0058] The press-fitting frame 33 is installed on the top of the end of the sliding sleeve 32 away from the base 1 and is used for press-fitting the wheelset.

[0059] The unloading frame 34 is installed at the bottom of the sliding sleeve 32 near the base 1 and is used for unloading the wheelset.

[0060] See also Figure 3 as well as Figure 4 A two-way cylinder 35 is installed on the side of the connecting protrusion away from the base 1 through the cylinder seat, driving the sliding sleeve 32 to move on the reversing rod 31. Connecting rings 351 matching the sliding sleeve 32 on the same side are installed on the two telescopic ends of the two-way cylinder 35 to ensure that the two-way cylinder 35 rotates synchronously with the sliding sleeve 32 during the rotation of the sliding sleeve 32 driven by the reversing rod 31, and the connecting ring 351 is installed on the corresponding sliding sleeve 32 through a bearing, a ratchet 352 is installed on the reversing rod 31, and a ratchet pawl 353 matching the ratchet 352 is installed at the bottom of the base 1.

[0061] See also Figure 2 The end of the support frame 2 away from the base 1 is provided with an arc-shaped groove for placing the wheel axle 100, and a limiting protrusion is provided on the reversing rod 31, which is used to limit the sliding sleeve 32 to prevent the sliding sleeve 32 from rotating relative to the reversing rod 31. During specific operation, the wheel axle 100 is placed on the arc-shaped groove, and then the wheel hub 101 is installed on both sides of the wheel axle 100 manually or by an existing crane. At this time, the two-way cylinder 135 is started, and the telescopic ends of the two-way cylinder 135 move toward each other through the connecting ring 351 during the process of moving toward each other. During the process of moving toward each other, the connecting ring 351 synchronously drives the pressing frame 33 to move toward each other through the sliding sleeve 32. During the process of moving toward each other, the pressing frame 33 can press the wheel hub 101 on the wheel axle 100, and then the two pressing frames 33 cooperate with each other to simultaneously press the wheel hub 101 on the wheel axle 100, that is, the wheel hub 101 is press-fitted in a double-station manner.

[0062] See also Figure 3 , 4 as well as Figure 5 A limiting mechanism 5 matched with the wheel axle 100 is also installed on the base 1.

[0063] In order to improve the stability of the axle 100 during the press-fitting process, the present invention also provides a limiting mechanism 5 to fix the axle 100 during the press-fitting process. Specifically, the limiting mechanism 5 includes: a limiting plate 51, which is arranged above the base 1, and an arc groove 52 is opened on the side close to the base 1.

[0064] Two connecting rods 53 are provided and are symmetrically arranged along the width direction of the base 1 . They are slidably arranged along the height direction of the base 1 , and one end of the connecting rods 53 close to the limiting plate 51 is installed on the limiting plate 51 .

[0065] The return spring 54 is sleeved on the connecting rod 53 , one end of which is mounted on the limiting plate 51 , and the other end away from the limiting plate 51 is mounted on the base 1 .

[0066] The linkage plate 55 is installed at the bottom of the two connecting rods 53 , and a through groove is formed on the linkage plate 55 .

[0067] The driving connecting plate 56 is configured as an L-shaped structure, and its vertical section is mounted on any one of the sliding sleeves 32 via a bearing, and its horizontal section away from its vertical section abuts against the inside of the through groove.

[0068] The horizontal section of the driving connecting plate 56 is far away from one end of the vertical section thereof and is sequentially arranged from the vertical section thereof into an inclined section 1 and an inclined section 2, and a horizontal connecting section is arranged between the inclined section 1 and the inclined section 2.

[0069] See also Figure 6 A cavity is provided on the side of the support frame 2 away from the base 1, a connecting spring rod 21 is installed at the bottom of the cavity, an arc plate 22 is installed on the connecting spring rod 21, a ball 23 is installed on the arc plate 22, and an arc rubber pad 24 is also installed on the side of the support frame 2 away from the base 1.

[0070] The height of the arc plate 22 is higher than the height of the arc rubber pad 24 at the starting position, and the arc groove 52 is evenly provided with ball bearings 3 to reduce the resistance with the inner wall of the arc groove 52 when the wheel axle 100 rotates later, so as to ensure that the wheel axle 100 can rotate smoothly. In specific operation, the sliding sleeve 32 drives the driving connecting plate 56 to move toward the linkage plate 55 during the process of moving toward each other. When the press-fitting frame 33 is close to the wheel hub 101 (that is, the press-fitting frame 33 is located in contact with the wheel hub 101), the inclined section 2 is in contact with the bottom of the through groove, and the driving connecting plate 56 is driven to move toward the linkage plate 55. 56 continues to move toward the linkage plate 55. During the movement of the driving link plate 56, the inclined section 2 cooperates with the through groove to drive the linkage plate 55 to move downward. During the downward movement of the linkage plate 55, the connecting rod 53 is driven downward. At this time, the reset spring 54 is compressed. During the downward movement of the connecting rod 53, the limit plate 51 is simultaneously driven downward. When the inclined section 2 moves out of the bottom of the through groove (that is, the inclined section 2 is no longer in contact with the bottom of the through groove), the limit plate 51 drives the ball 3 to contact the wheel shaft 100 through the arc groove 52. At this time, the horizontal link is in contact with the bottom of the through groove.

[0071] At this time, the driving connecting plate 56 continues to move toward the linkage plate 55, and the driving connecting plate 56 drives the horizontal connecting section to move out of the bottom of the through-groove during the movement. At this time, the inclined section 1 moves to the bottom of the through-groove, and the inclined section 1 contacts with the bottom of the through-groove during the movement and continues to drive the connecting rod 53 to move downward. During the downward movement of the connecting rod 53, it continues to drive the limiting plate 51 to move downward. During the movement of the limiting plate 51, it contacts the arc plate 22 and drives the arc plate 22 to move downward. At this time, the wheel axle 100 is abutted against the arc rubber pad 24. Due to the large friction between the arc rubber pad 24 and the wheel axle 100, the wheel axle 100 no longer rotates relative to the ball 23 at this time. Therefore, the limiting plate 51 and the arc rubber pad 24 cooperate with each other to fix the wheel axle 100 on the support frame 2, thereby improving the stability of the wheel axle 100 during the press-fitting process.

[0072] When the inclined section 1 is completely moved out of the through groove, the horizontal section of the driving connecting plate 56 contacts the bottom of the through groove. The through groove and the horizontal section of the driving connecting plate 56 cooperate with each other to ensure the stability between the linkage plates 55, avoiding the possibility of shaking caused by the inclined section 1 contacting the bottom of the through groove.

[0073] When the horizontal section of the driving connecting plate 56 contacts the bottom of the through groove, the press-fitting frame 33 can press-fit the hub 101 onto the axle 100, and at this time, the two-way cylinder 1 35 is closed.

[0074] See also Figure 7After the wheel hub 101 is pressed, the air tightness of the wheel hub 101 is tested to ensure the integrity of the surface of the wheel hub 101. Specifically, the sliding sleeve 32 is provided with an extrusion frame 36 corresponding to the press-fitting frame 33, and the extrusion frame 36 is located at the bottom of the corresponding sliding sleeve 32. An airtight cylinder 361 is installed on the opposite surface of the extrusion frame 36, and the opening faces the corresponding unloading frame 34. An air inlet pipe 362 is installed on the extrusion frame 36 and is connected to the corresponding airtight cylinder 361. A rubber ring 363 and a gel ring 364 are installed on the airtight cylinder 361 in sequence along the pressing direction of the corresponding press-fitting frame 33. A barometer 365 is also installed on the airtight cylinder 361.

[0075] Since there may be some connection holes on the wheel hub 101 that are connected to the tire, it is necessary to seal the connection holes on the surface with sealing plugs before the air tightness test. In specific operation, after the wheel hub 101 is press-fitted, the reversing rod 31 is rotated and rotated 180 degrees. At this time, the press-fitting frame 33 and the extrusion frame 36 are swapped. When the reversing rod 31 is rotated 180 degrees, the ratchet 352 and the pawl 353 cooperate with each other to limit and fix the reversing rod 31 to ensure the stability of the reversing rod 31 after reversing. At this time, the two-way cylinder 35 is started again. The telescopic end of the two-way cylinder 35 cooperates with the sliding sleeve 32 through the connecting ring 351 to drive the extrusion frame 36 to move toward each other. The extrusion frame 36 moves toward each other. During the movement, the airtight cylinder 361 is driven to move toward the side of the wheel hub 101. During the movement of the airtight cylinder 361, the gel ring 364 is driven to press against the surface of the wheel hub 101 through the rubber ring 363. At this time, the airtight cylinder 361 can form a closed space with the wheel hub 101 and the axle 100 through the cooperation between the rubber ring 363 and the gel ring 364. The rubber ring 363 can make way for some protrusions and textures on the surface of the wheel hub 101, so that the airtight cylinder 361 is closely fitted to the surface of the wheel hub 101, thereby increasing the sealing effect between the end face of the airtight cylinder 361 and the wheel hub 101. The gel ring 364 can ensure the sealing effect between the rubber ring 363 and the surface of the wheel hub 101, and prevent gas from escaping from the gap between the rubber ring 363 and the wheel hub 101.

[0076] When the airtight cylinder 361 contacts the surface of the wheel hub 101, gas is pumped into the air inlet pipe 362 through the existing air pump (not shown in the figure), and the gas flows into the airtight cylinder 361 through the air inlet pipe 362. If there are no cracks on the wheel hub 101 when the wheel hub 101 is pressed onto the axle 100, after a period of time, the reading of the barometer 365 is much greater than the external atmospheric pressure, otherwise the reading of the barometer 365 is consistent with the external atmospheric pressure. The above method can effectively detect cracks on the pressed wheel hub 101.

[0077] See also Figures 8 to 10, if there are no cracks on the surface of the hub 101, since there is a huge pressure between the hub 101 and the axle 100 during the press-fitting process, in order to detect whether the hub 101 deforms during the press-fitting process, it is necessary to detect the deformation degree of the circumferential surface of the hub 101. Specifically, a U-shaped frame 11 with an upward opening is arranged on the base 1. An elastic telescopic rod 12 is arranged on one side of the vertical section of the U-shaped frame 11 close to the support frame 2. A switch 13 is installed on the telescopic end of the elastic telescopic rod 12. A marking pen 14 is also installed on one side of the vertical section of the U-shaped frame 11 close to the support frame 2. A light bulb 15 electrically connected to the switch 13 is also installed on the horizontal section of the U-shaped frame 11.

[0078] The horizontal section of the U-shaped frame 11 is arranged on the base 1 in a limited sliding manner through a linkage protrusion. A limiting rod 16 is arranged through the upper part of the horizontal section of the U-shaped frame 11. A plurality of limiting grooves 17 matched with the limiting rod 16 are uniformly arranged on the base 1 along its width direction.

[0079] Among them, the marking pen 14 can adaptively change the distance from the circumferential surface of the hub 101, that is, the marking pen 14 is installed on the vertical section of the U-shaped frame 11 through an elastic member, but the elastic member is not shown in the figure. According to the diameter of the hub 101, the U-shaped frame 11 is moved to the working position. The switch 13 is used to control the on and off of the light bulb 15, and a power supply is connected between any side of the light bulb 15 and any side of the switch 13. During specific work, the limiting rod 16 is pulled out and the U-shaped frame 11 is moved so that the U-shaped frame 11 is moved to the working position, and then the limiting rod 16 is inserted into the U-shaped frame 11 and matched with the corresponding limiting groove 17. Furthermore, the limiting rod 16 and the corresponding limiting groove 17 cooperate with each other to fix the U-shaped frame 11. At this time, both the switch 13 and the marking pen 14 are kept at a certain distance from the circumferential surface of the hub 101, and this distance is also the qualified distance of the hub 101 (that is, the allowable deviation distance during the rotation of the hub 101).

[0080] Before the axle 100 drives the hub 101 to rotate, the first double-acting cylinder 35 is started. At this time, the telescopic end of the first double-acting cylinder 35 moves away from the sliding sleeve 32 through the connecting ring 351. At this time, the driving connecting plate 56 moves towards the starting position until the horizontal connecting section contacts the bottom of the through groove. At this time, the extrusion frame 36 drives the airtight cylinder 361 to separate from the surface of the hub 101. The limiting plate 51 just drives the third ball to contact the axle 100 through the arc-shaped groove 52, and the limiting between the limiting plate 51 and the axle 100 is released. Therefore, the cooperation between the limiting plate 51 and the support frame 2 can limit the axle 100 during the rotation of the axle 100, avoiding the possibility of the axle 100 shaking or even detaching from the support frame 2 during the rotation process, and improving the stability of the axle 100 during the rotation process.

[0081] At this time, the wheel axle 100 is driven to rotate by an external driving force (motor, etc.), and the wheel hub 101 is driven to rotate during the rotation of the wheel axle 100. If the light bulb 15 is on during the rotation of the wheel hub 101, it means that the switch 13 is in contact with the circumferential surface of the wheel hub 101, and a closed circuit is formed between the switch 13, the power supply and the light bulb 15. At this time, there is deformation on the circumferential surface of the wheel hub 101. In order to further determine the position where the deformation occurs on the circumferential surface of the wheel hub 101, the marker 14 can mark the deformation position on the surface of the wheel hub 101 to further help the staff determine the position of the deformation; otherwise, the light bulb 15 is not on, the surface of the wheel hub 101 has not been deformed or the degree of deformation is within the error range, which indicates that the wheel hub 101 is pressed and qualified.

[0082] By testing the air tightness of the wheel hub 101 and the degree of deformation of the circumferential surface of the wheel hub 101, it is further determined whether the wheelset after press-fitting is qualified.

[0083] Replay Figure 2 In order to prevent the wheel axle 100 from deviating along the length direction of the base 1 during rotation, the limit frame 18 designed in the present invention cooperates with the wheel hub 101 to limit the wheel axle 100. Specifically, the base 1 is symmetrically provided with an L-shaped limit frame 18 along its length direction, the vertical section of the limit frame 18 is installed on the base 1, and a ball 19 is installed at one end of the horizontal section of the limit frame 18 away from its vertical section.

[0084] During specific operation, the wheel hub 101 after press-fitting is just in contact with the horizontal section of the limit frame 18. At this time, the two horizontal sections of the limit frame 18 cooperate with each other to limit the wheel hub 101, so as to prevent the wheel hub 101 from deviating along the length direction of the base 1 and causing the wheel axle 100 to deviate, thereby improving the stability of the wheel axle 100 during rotation. Among them, the ball 19 can reduce the friction between the horizontal section of the limit frame 18 and the surface of the wheel hub 101, so that the wheel hub 101 rotates more smoothly.

[0085] See also Fig.11 In order to obtain detection data at different positions on the wheel axle 100 , the present invention further provides a pressure detection mechanism 4 . Specifically, the pressure detection mechanism 4 includes: a lifting frame 41 , which is arranged directly above the two support frames 2 .

[0086] Two pressing sleeves 42 are provided and are symmetrically arranged along the length direction of the lifting frame 41 , penetrate the lifting frame 41 along the height direction of the lifting frame 41 , and move synchronously along the length direction of the lifting frame 41 .

[0087] The pressing block 43 is arranged inside the pressing sleeve 42 .

[0088] The electric slider 44 is disposed on the portion of the base 1 between the two support frames 2 and slides along the length direction of the base 1 . A rangefinder 45 is installed on the electric slider 44 .

[0089] Continue reading Fig.11 A pressure gauge 431 is installed at one end of the lower pressing block 43 away from the lifting frame 41, and a fitting block 432 matching with the wheel axle 100 is installed on the pressure gauge 431. The fitting block 432 is provided with an arc groove 433 matching with the wheel axle 100.

[0090] An L-shaped pressure testing frame 46 is installed on the base 1, and a lifting cylinder 47 is installed on the horizontal section of the pressure testing frame 46. The telescopic end of the lifting cylinder 47 is connected to the lifting frame 41. A two-way cylinder 48 is installed at the bottom of the lifting frame 41 through a cylinder seat. The two telescopic ends of the two-way cylinder 48 are connected to the downward pressure sleeve 42 on the same side.

[0091] Pressure testers are installed on opposite sides of the press-fitting frame 33, so as to detect the pressure on the wheel hub 101 when the press-fitting frame 33 press-fits the wheel hub 101 onto the axle 100. If the pressure on the wheel hub 101 is within a certain value range, the wheel hub 101 is press-fitted qualified, otherwise it is unqualified.

[0092] A plurality of ball bearings 434 are evenly arranged inside the arc-shaped groove 433, and the rangefinder 45 is located directly below the wheel axle 100. During specific operation, the lifting cylinder 47 is started, and the lifting frame 41 is driven to move downward during the movement of the telescopic end of the lifting cylinder 47. During the downward pressing process of the lifting frame 41, the pressing sleeve 42 drives the pressing block 43 to move downward, and during the downward movement of the pressing block 43, the pressure gauge 431 drives the fitting block 432 to fit against the wheel axle 100. At this time, the arc-shaped groove 433 and the wheel axle 100 cooperate with each other to perform a pressure test on the wheel axle 100. At this time, the pressure indication number is read out, and in order to simulate the actual environment of the detection, the wheel axle 100 is often driven to rotate by an external driving force during the pressure test, thereby simulating the occasion of the wheelset during driving, and performing a pressure test on the wheelset, and the test data is more representative.

[0093] At this time, the electric slider 44 is started, and the electric slider 44 drives the distance meter 45 to move during the movement, so that the distance meter 45 can measure the distance between the axle 100 and the electric slider 44. If the measured value does not change from beginning to end or the change value difference is within the allowable error range, the axle 100 is not damaged, otherwise the axle 100 is damaged.

[0094] When the distance measurement of the rangefinder 45 is completed, the two-way cylinder 48 is started. During the process of the telescopic ends of the two-way cylinder 48 moving toward each other, the lower pressing block 43 can be driven by the lower pressing sleeve 42 to move on the wheel axle 100, and then the lower pressing block 43 and the fitting block 432 cooperate with each other to apply pressure to different positions of the wheel axle 100, so as to repeat the above actions to obtain the distance data between the electric slider 44 and the wheel axle 100 when pressure is applied at different positions on the wheel axle 100. The data volume is large and the detection data is more representative.

[0095] When the wheel hub 101 needs to be unloaded, since the extrusion frame 36 has been rotated to fit with the wheel hub 101 before, the unloading frame 34 is also rotated to cooperate with the wheel hub 101. In order to increase the contact area between the unloading frame 34 and the wheel hub 101 and better apply pressure to the wheel hub 101, the part of the unloading frame 34 that contacts the wheel hub 101 is set as a circular ring structure, and a notch is provided on the circular ring structure for making way for the wheel axle 100 to ensure that the wheel axle 100 does not collide with the circular ring structure of the unloading frame 34 after the unloading frame 34 rotates 180 degrees, and the circular ring structure of the unloading frame 34 is coaxial with the wheel axle 100. Specifically, the two-way cylinder 1 35 is started, and its telescopic end drives the sliding sleeve 32 to move synchronously during the movement. During the movement of the sliding sleeve 32, the wheel hub 101 is driven to be unloaded from the wheel axle 100 through the unloading frame 34.

[0096] See also Fig.12 In order to speed up the process of removing the wheel hub 101 from the wheel axle 100 and protect the removal rack 34, the present invention further provides a swing rod 83 to knock the removal rack 34 during the removal process. Specifically, a two-way cylinder 3 8 is installed on the base 1 through a cylinder seat, and a push rod 81 is installed on the two telescopic ends of the two-way cylinder 3 8. A swing shaft 82 is symmetrically installed on the base 1 along its length direction through a bearing, and a reciprocating swinging swing rod 83 is installed on the swing shaft 82.

[0097] During specific operation, when the unloading rack 34 is unloading the wheel hub 101, the two-way cylinder three 8 is started, and the telescopic end of the two-way cylinder three 8 drives the push rod 81 to move back and forth. During the reciprocating movement of the push rod 81, the swing rod 83 is driven to swing back and forth around the swing shaft 82. During the reciprocating swing of the swing rod 83, the unloading rack 34 can be knocked to speed up the unloading process of the wheel hub 101 from the wheel axle 100. At the same time, an external force is given to the unloading rack 34 to assist the unloading rack 34 in unloading the wheel hub 101, so as to avoid the unloading rack 34 from being broken due to excessive force. A coil spring is sleeved on the swing shaft 82, and the coil spring is connected to the swing rod 83, which is used to reset the swing rod 83 during the swinging process.

[0098] Embodiment 2:

[0099] Replay Fig.11 On the basis of the first embodiment, in order to increase the representativeness of the detection data of the present invention, the present invention further provides an adjustment component 6 to simulate the state where the wheel axle 100 is subjected to uneven force when the vehicle turns or on a bumpy road, so that the magnitude of the force exerted on the two force points of the wheel axle 100 is different. Specifically, the adjustment component 6 includes: a vertical protrusion 61, which is installed in the middle of the lifting frame 41.

[0100] The rotating shaft 62 is rotatably mounted on the vertical protrusion 61 through a bearing.

[0101] A driving motor 63 is mounted on the rotating shaft 62;

[0102] The fixed protrusions 64 are symmetrically arranged along the width direction of the lifting frame 41 and are installed on the pressing sleeve 42. The fixed protrusions 64 on the same pressing sleeve 42 are jointly installed with a rotating shaft 65 through a bearing.

[0103] There are two traction ropes 66 corresponding to the rotating couplings one by one. One end of the traction rope 66 is installed on the corresponding lower pressing block 43 , and one end of the traction rope 66 away from the corresponding rotating coupling passes around the rotating coupling 65 and is wound around the rotating shaft 62 .

[0104] The adjusting portion 67 is installed on the lifting frame 41 and is used for adjusting the traction rope 66 .

[0105] The pressing block 43 is slidably arranged inside the pressing sleeve 42, and during the rotation of the rotating shaft 62, one traction rope 66 is in a tightened state, and the other traction rope 66 is in a released state. In specific operation, when the wheel axle 100 rotates and pressure is applied to the wheel axle 100 through the pressing block 43, the lifting cylinder 47 is started to drive the lifting frame 41 to move downward so that the arc groove 433 and the wheel axle 100 are just in contact with the force. At this time, according to the reading of the pressure gauge 431, the pressure received by the wheel axle 100 is half of the gravity of the pressing block 43. The driving motor 63 is started. When the output shaft of the driving motor 63 has a rotation tendency, the traction rope 66 on one side has a winding tendency. At this time, the traction rope 66 on the other side has a releasing tendency. At this time, the traction ropes 66 on both sides respectively drive the pressing block 43 to rise or fall through the corresponding rotating shaft 65. Therefore, the pressure of the pressing block 43 on the wheel axle 100 on the corresponding side is reduced or increased respectively relative to the starting position, so that the pressure at the two positions where pressure is applied at the wheel axle 100 is different.

[0106] Thereby, the stress condition of the wheel axle 100 at a turning section when the vehicle is on a bumpy road section can be simulated, making the detection data more representative. At this time, the electric slider 44 is started again, and the electric slider 44 drives the distance meter 45 to move during the movement, and then the distance meter 45 can measure the distance between the wheel axle 100 and the electric slider 44. If the measured value does not change from beginning to end or the change value difference is within the allowable error range, the wheel axle 100 is not damaged, otherwise the wheel axle 100 is damaged.

[0107] When the driving motor 63 is started and the output shaft of the driving motor 63 has a reciprocating rotation tendency, and thus the pressing blocks 43 corresponding to the two traction ropes 66 always have a tendency to move up and down reciprocally, the pressure applied by the pressing block 43 to the wheel shaft 100 through the fitting block 432 is always in a changing state, so that the stress condition of the vehicle when driving on a bumpy road section can be simulated. Repeat the above steps. If the distance measuring instrument 45 can measure the distance between the wheel shaft 100 and the electric slider 44, and if the measured value does not change from beginning to end or the change value difference is within the allowable error range, then the wheel shaft 100 is not damaged; otherwise, the wheel shaft 100 is damaged.

[0108] Among them, the rotating coupling shaft 65 can reverse the direction of the traction rope 66.

[0109] Continue to refer to Fig.11 , since the distance between the lower pressing sleeves 42 is adjustable, in order to ensure that the traction rope 66 is always in a taut state, the liftable guide shaft 673 provided by the present invention can adjust the traction rope 66. Specifically, the adjusting part 67 includes two support spring rods 671 symmetrically distributed along the length direction of the lifting frame 41. One end of the support spring rod 671 away from the lifting frame 41 is provided with a U-shaped plate 672 with an upward opening. The two vertical sections of the U-shaped plate 672 are installed with a guide shaft 673 extending along the width direction of the lifting frame 41 through bearings. Adjusting plates 674 are symmetrically installed on the lower pressing sleeves 42 along the width direction of the lifting frame 41. The adjusting plates 674 are provided with inclined slopes, and the U-shaped plate 672 abuts against the inclined slopes of the corresponding adjusting plates 674.

[0110] During specific operation, when the lower pressing sleeves 42 move towards each other, they drive the adjusting plates 674 to move towards each other. During the process of the adjusting plates 674 moving towards each other, they drive the U-shaped plate 672 to move upward through the inclined slopes. During the process of the U-shaped plate 672 moving upward, it synchronously drives the guide shaft 673 to move upward, and the support spring rods 671 are in a stretched state, so that the traction rope 66 is always in a stretched and taut state, ensuring the position of the pressing block 43 remains unchanged, and avoiding the distance between the lower pressing sleeves 42 and the rotating shaft 62 decreasing during the process of the lower pressing sleeves 42 moving towards each other, resulting in the pressing block 43 moving downward through the traction rope 66 and affecting the effect of the traction rope 66 adjusting the pressure of the pressing block 43 on the wheel shaft 100 through the rotating shaft 62.

[0111] Embodiment 3, refer to Fig.13 and Fig.14On the basis of the second embodiment, in order to further simulate the scene of the wheelset in actual use, the present invention further provides two support blocks 7, wherein the support blocks 7 are symmetrically arranged along the length direction of the base 1 and are clamped inside the base 1. A clearance groove is opened on the support block 7, and three arc-shaped rotating rollers 71 are rotatably installed inside the clearance groove through bearings. The support frame 2 is composed of two mutually sleeved support connecting blocks 72, and a fixed connecting rod 73 for ensuring that the two support connecting blocks 72 are fixedly connected is clamped on the support connecting block 72 close to the base 1.

[0112] In the starting position, the two support blocks 72 are in a stretched state, that is, at this time, the height of the two support blocks 72 is the highest. Pull out the support block 7, and then manually install the tire on the wheel hub 101. At this time, the wheel hub 101 just corresponds to the clearance groove, remove the fixed connecting rod 73, and the support block 72 close to the wheel axle 100 moves down to the inside of the support block 72 close to the base 1. At this time, the support frame 2 is separated from the wheel axle 100, and the wheel axle 100 is subjected to the pressure of the pressing block 43. The tire is against the rotating roller 71, and the tire is subjected to force. At this time, the wheel axle 100 is rotated, and the wheel axle 100 drives the tire to rotate on the rotating roller 71 through the wheel hub 101, thereby simulating the scene of the wheelset in actual driving, and the detection data is further representative.

[0113] Example 4, see Fig.15 On the basis of the first embodiment, the present invention further provides a horizontal frame 9, a shell 91 is installed on the horizontal frame 9, and the base 1 is installed on the shell 91, a driving slider 92 is provided on the horizontal frame 9, a transverse frame 93 is installed on the driving slider 92, a bidirectional electric push rod 94 is installed on the transverse frame 93, a press-fit connecting frame 95 is installed on both telescopic ends of the bidirectional electric push rod 94, and a sliding sleeve 32 is installed on the corresponding press-fit connecting frame 95 through a bearing, the parts installed on the sliding sleeve 32 are the same as the parts on its surface in the first embodiment, and a reversing motor 96 for reversing the sliding sleeve 32 is installed on the sliding sleeve 32.

[0114] The above-mentioned parts cooperate with each other to carry out press-fitting, pressure-checking and disassembly processing of the wheelset.

[0115] During specific work, when it is necessary to press-fit and pressure-check the wheelset, after the wheel axle 100 and the wheel hub 101 are placed and clamped on the shell 91, the driving slider 92 is started to drive the horizontal frame 93 to move toward the bottom of the base 1. After driving the horizontal frame 93 to move to the bottom of the base, the two-way electric push rod 94 is started to drive the press-fitting connecting frame 95 to move toward each other. During the process of the press-fitting connecting frame 95 moving toward each other, it drives the press-fitting frame 33 to press-fit the wheelset. When it is necessary to pressure-check the wheelset, the reversing motor 96 is started to drive the sliding sleeve 32 to rotate, so that the extrusion frame 36 rotates a certain angle and cooperates with the wheelset. The steps in Example 1 can be repeated to pressure-check the wheelset. When it is necessary to unload the wheelset, the two-way electric push rod 94 is started to drive the sliding sleeve 32 to move away, and then the sliding sleeve 32 cooperates with the unloading frame 34 during the movement to unload the wheelset.

[0116] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0117] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment, comprising a base (1), on which a support frame (2) is symmetrically arranged along its length direction, characterized in that: The base (1) is provided with a press-on and withdraw-off mechanism (3) and a pressure detection mechanism (4), wherein: The press-fitting and unloading mechanism (3) comprises: A reversing rod (31) is mounted on the bottom of the base (1) via a connecting protrusion, and the reversing rod (31) is rotatably mounted on the connecting protrusion via a bearing penetrating therethrough; Two sliding sleeves (32) are provided and are symmetrically arranged along the length direction of the reversing rod (31), and the limiting sliding sleeves are arranged on the reversing rod (31); A press-fitting frame (33) is mounted on the top of the end of the sliding sleeve (32) away from the base (1) and is used for press-fitting the wheelset; An unloading frame (34) is installed at the bottom of the sliding sleeve (32) near the base (1) and is used for unloading the wheelset; The pressure detection mechanism (4) comprises: A lifting frame (41) is arranged directly above the two supporting frames (2); Two pressing sleeves (42) are provided and are symmetrically arranged along the length direction of the lifting frame (41); A pressing block (43) is arranged inside the pressing sleeve (42); An electric slider (44) is arranged on a portion of the base (1) between the two support frames (2), and a distance meter (45) is installed on the electric slider (44); A bidirectional cylinder (35) is installed on the side of the connecting protrusion away from the base (1) through a cylinder seat, and connecting rings (351) matching with the sliding sleeve (32) on the same side are installed on the two telescopic ends of the bidirectional cylinder (35), and the connecting ring (351) is installed on the corresponding sliding sleeve (32) through a bearing, and a ratchet (352) is installed on the reversing rod (31), and a ratchet pawl (353) matching with the ratchet (352) is installed on the bottom of the base (1); The base (1) is also provided with a limiting mechanism (5) matched with the wheel axle (100), and the limiting mechanism (5) comprises: A limiting plate (51) is arranged above the base (1), and an arc-shaped groove (52) is formed on a side of the limiting plate close to the base (1); Two connecting rods (53) are provided and are symmetrically arranged along the width direction of the base (1). They are slidably arranged to penetrate along the height direction of the base (1), and one end of the connecting rods close to the limiting plate (51) is installed on the limiting plate (51). A return spring (54) is sleeved on the connecting rod (53), one end of which is mounted on the limit plate (51), and the other end of which is away from the limit plate (51) is mounted on the base (1); A linkage plate (55) is installed together at the bottom of the two connecting rods (53), and a through groove is formed on the linkage plate (55); The driving connecting plate (56) is configured as an L-shaped structure, and its vertical section is mounted on any one of the sliding sleeves (32) via a bearing, and its horizontal section, which is away from the vertical section, abuts against the inside of the through groove; The horizontal section of the driving connecting plate (56) is far away from one end of the vertical section and is arranged from the vertical section to the inclined section 1 and the inclined section 2 in sequence from near to far, and a horizontal connecting section is arranged between the inclined section 1 and the inclined section 2; A cavity is provided on the side of the support frame (2) away from the base (1), a connecting spring rod (21) is installed at the bottom of the cavity, an arc plate (22) is installed on the connecting spring rod (21), a second ball bearing (23) is installed on the arc plate (22), and an arc rubber pad (24) is also installed on the side of the support frame (2) away from the base (1).

2. The double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment according to claim 1 is characterized in that: The sliding sleeve (32) is provided with an extrusion frame (36) corresponding to the pressing frame (33), and the extrusion frame (36) is located at the bottom of the corresponding sliding sleeve (32), and the opposite surface of the extrusion frame (36) is installed with an airtight cylinder (361), and the opening faces the corresponding unloading frame (34), and the extrusion frame (36) is installed with an air inlet pipe (362) connected to the corresponding airtight cylinder (361), and the airtight cylinder (361) is installed with a rubber ring (363) and a gel ring (364) in sequence along the pressing direction of the corresponding pressing frame (33), and a barometer (365) is also installed on the airtight cylinder (361).

3. The double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment according to claim 1 is characterized in that: A bidirectional cylinder 3 (8) is mounted on the base (1) via a cylinder seat, and push rods (81) are mounted on the two telescopic ends of the bidirectional cylinder 3 (8). A swing shaft (82) is symmetrically mounted on the base (1) along its length direction via a bearing, and a reciprocating swing rod (83) is mounted on the swing shaft (82).

4. The double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment according to claim 1 is characterized in that: The base (1) is provided with a shaped frame (11) with an opening facing upward, an elastic telescopic rod (12) is provided on a side of the vertical section of the shaped frame (11) close to the support frame (2), a switch (13) is installed on the telescopic end of the elastic telescopic rod (12), a marking pen (14) is also installed on a side of the vertical section of the shaped frame (11) close to the support frame (2), and a light bulb (15) electrically connected to the switch (13) is also installed on the horizontal section of the shaped frame (11).

5. The double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment according to claim 4 is characterized in that: The horizontal section of the profile frame (11) is slidably arranged on the base (1) through a linkage protrusion limit, a limit rod (16) is arranged above the horizontal section of the profile frame (11), and a plurality of limit grooves (17) matching with the limit rod (16) are evenly arranged on the base (1) along its width direction.

6. The double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment according to claim 1 is characterized in that: A pressure gauge (431) is installed at one end of the lower pressing block (43) away from the lifting frame (41), a fitting block (432) matching with the wheel axle (100) is installed on the pressure gauge (431), and an arc-shaped groove (433) matching with the wheel axle (100) is opened on the fitting block (432); An L-shaped pressure testing frame (46) is installed on the base (1), a lifting cylinder (47) is installed on the horizontal section of the pressure testing frame (46), the telescopic end of the lifting cylinder (47) is connected to the lifting frame (41), a two-way cylinder (48) is installed at the bottom of the lifting frame (41) through a cylinder seat, and the two telescopic ends of the two-way cylinder (48) are connected to the downward pressure sleeve (42) on the same side.

7. The double-station wheel pair press-fitting, pressure-testing and unloading integrated equipment according to claim 1 is characterized in that: The base (1) is symmetrically provided with an L-shaped limit frame (18) along its length direction; the vertical section of the limit frame (18) is installed on the base (1); and a ball bearing (19) is installed at one end of the horizontal section of the limit frame (18) away from the vertical section.

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