A mounting device for a new energy vehicle speed reducer

Abstract

This invention provides an installation device for a new energy vehicle reducer, belonging to the field of reducer assembly technology. The installation device includes a mounting frame with a drive cylinder on it. A hydraulic telescopic rod is mounted on the top of the frame, and a compression cylinder is located below the hydraulic telescopic rod. A guide rod passes through the interior of the drive cylinder. Piston assemblies are mounted on the free end of the hydraulic telescopic rod and on the guide rod. This invention enhances the driving force of the hydraulic telescopic rod, increasing the compression of the expanding piston, thus avoiding insufficient driving force in the assembly of reducer components. It further increases the volume of the expanding piston, preventing pressure leakage and improving the precision of the vehicle reducer component assembly. By discharging pressure through gaps, the guide rod no longer provides the driving force for extension and retraction, preventing overload and damage to reducer components.

Description

Technical Field

[0001] This invention belongs to the field of speed reducer assembly technology, and specifically relates to an installation device for a speed reducer in a new energy vehicle. Background Technology

[0002] With the mature development and increasing popularity of new energy vehicles, the testing of new energy vehicles and their components has attracted more and more attention. As an important part of the powertrain of new energy vehicles, the reducer directly affects the stability and efficiency of the power output of the power equipment.

[0003] For installation devices used in new energy vehicle reducers, a test bench is required to assemble the reducer components during installation. The drive unit of the test bench, as part of the reducer component assembly, typically uses a telescopic cylinder to assemble the reducer components. If the drive force of the test bench is insufficient, or if the drive force becomes unbalanced due to prolonged use, assembling the reducer components becomes more difficult, causing wear on the piston inside the telescopic cylinder, leading to pressure leakage and errors in the assembly of the reducer components, resulting in incomplete assembly of the reducer. Increasing the drive force of the test bench also increases the risk of pressure leakage as the thrust increases. If an overload occurs during the assembly of the reducer components, excessive compression of the components during assembly can easily cause damage to the reducer components. Summary of the Invention

[0004] (a) Technical problems to be solved The purpose of this invention is to provide an installation device for a new energy vehicle reducer, aiming to solve the problems in the prior art where, during the installation of a vehicle reducer, a test bench is required to assemble the reducer components. The test bench's drive unit, as the assembly unit for reducer components, typically uses a telescopic cylinder. If the test bench's driving force is insufficient, or if prolonged use causes an imbalance in the driving force, assembling the reducer components becomes laborious, leading to wear on the piston inside the telescopic cylinder, pressure leakage, and errors in the assembly of the vehicle reducer components, resulting in incomplete assembly. Increasing the test bench's driving force also increases the risk of pressure leakage. Furthermore, if an overload occurs during the assembly of the vehicle reducer components, excessive compression can occur, easily causing damage to the components.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: An installation device for a reducer in a new energy vehicle includes a mounting frame and a support base plate. A drive cylinder is installed on the mounting frame. Two uprights are fixedly connected to both sides of the mounting frame. A hydraulic telescopic rod is installed on the top of the uprights. A compression cylinder is installed below the hydraulic telescopic rod. A guide rod passes through the interior of the drive cylinder. A piston assembly is installed on the free end of the hydraulic telescopic rod and on the guide rod. The piston assembly includes an electric telescopic rod and an expanding piston. An adjusting piston is provided at the free end of the electric telescopic rod. The expanding piston has an annular cavity and a guide hole inside, and the cavity and the guide hole are connected. The guide hole is cross-shaped, and a pressure gauge is provided at the port of the guide hole. A pressure sensor is provided at the end of the guide rod. The expansion piston is provided in three parts, one of which is a large-diameter expansion piston with a diameter greater than the other two equal-diameter small-diameter expansion pistons. The expansion piston separates the drive cylinder into an upper cavity and a lower cavity. The upper cavity is connected to the bottom of one of the compression cylinders through a No. 1 pipe, and the lower cavity is connected to the bottom of another compression cylinder through a No. 2 pipe.

[0006] Preferably, the adjusting piston is disposed at the free end of the hydraulic telescopic rod and inside the guide rod, respectively, and the expanding piston is disposed at the free end of the hydraulic telescopic rod and on the guide rod, respectively.

[0007] Preferably, the free end of the hydraulic telescopic rod and the guide rod are provided with strip-shaped holes, and the surface of the top of the compression cylinder is provided with a vent hole, and the strip-shaped holes are connected to the vent hole.

[0008] Preferably, the end of the guide rod is provided with an adsorption clamping assembly via a pressure sensor, and the pressure sensor is located at the connection between the adsorption clamping assembly and the guide rod; Two optical rods are fixedly installed at the end of the adsorption clamping assembly, and the two optical rods pass through the interior of the mounting frame.

[0009] Preferably, the adsorption clamping assembly includes a clamping frame, with screw rods threadedly connected to both sides of the clamping frame, and a handle provided at the end of the screw rod; an electromagnetic plate is provided at the bottom of the clamping frame.

[0010] Preferably, a cleaning assembly is provided at the extension and retraction points of the drive cylinder and the guide rod. The cleaning assembly includes two retaining rings, one of which is fixedly connected to the mounting bracket and the other is fixedly connected to the drive cylinder.

[0011] Preferably, the retaining ring has two semi-circular brushes inside, and the two semi-circular brushes are adapted to the retaining ring. The two semi-circular brushes are placed symmetrically in a circle. The two semi-circular brushes are put on the guide rod. The retaining ring is threaded with two symmetrical handles, which are used to fix the semi-circular brushes.

[0012] Preferably, the mounting bracket is U-shaped, with reinforcing ribs provided on the inner side of the right angle, and multiple mounting holes are provided on the mounting bracket.

[0013] Preferably, the expanding piston divides the guide rod into two sections, and the strip-shaped hole is disposed on one section of the guide rod. The length of the one section of the guide rod is greater than the length of the other section of the guide rod, so that the strip-shaped hole is always exposed to the outside, allowing the strip-shaped hole to contact the outside air.

[0014] Preferably, two slide rails are fixedly connected to both sides of the upper surface of the support base plate. A lead screw and a guide rod are respectively installed inside the two slide rails. A movable platform is slidably connected inside the slide rail. A rotating component is installed in the middle of the movable platform through a damping bearing. Support columns are fixedly connected to both sides of the upper surface of the support base plate. The support columns are fixedly installed to the mounting frame by bolts. A handle is fixedly connected to the end of the lead screw. The rotating assembly includes a rotating table, with threaded rods at both ends of the rotating table. A handle is provided at one end of each threaded rod, and a push plate is provided at the other end of the threaded rod via a thrust bearing. The push plate is provided with anti-slip texture.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the free end of the hydraulic telescopic rod extends or retracts, the small-diameter expansion piston presses down in the compression cylinder and enters the upper cavity of the drive cylinder through pipe number one, generating pressure. At this time, the large-diameter expansion piston presses down, driving the guide rod to move downward. Similarly, when the free end of the other hydraulic telescopic rod extends or retracts, it enters the lower cavity of the drive cylinder through pipe number two, causing the guide rod to move in the opposite direction through the large-diameter expansion piston. Since the force-bearing area of ​​the small-diameter expansion piston is smaller and the force-bearing area of ​​the large-diameter expansion piston is larger, the driving force of the hydraulic telescopic rod is enhanced, avoiding insufficient driving force in the assembly of reducer components, and saving effort.

[0016] 2. When the expansion piston wears, the contact pressure between the expansion piston and the inner wall of the drive cylinder and compression cylinder decreases, thus reducing the pressure in the annular cavity. This leads to a decrease in the pressure gauge reading. At this point, the free end of the electric telescopic rod extends, driving the adjusting piston to move. This increases the internal pressure of the annular cavity, causing the expansion piston to expand. This compensates for the worn expansion piston, increasing its compression and preventing pressure leakage. This improves the accuracy of assembling automotive reducer components.

[0017] 3. When the pressure gauge reading increases, the free end of the electric telescopic rod is activated to drive the adjusting piston. This increases the air pressure inside the annular cavity through the guide hole, thereby further increasing the volume of the expanding piston. This prevents excessive thrust from the expanding piston and further pressure leakage, and also increases the accuracy of the assembly of the automotive reducer components.

[0018] 4. When the pressure sensor reading is too high or reaches a set value, the electric telescopic rod is activated to retract in the opposite direction, driving the adjusting piston to move in the opposite direction. This creates negative pressure in the annular cavity through the guide hole, causing the volume of the expanding piston to shrink. At this time, there is a gap between the expanding piston and the driving cylinder, through which the pressure is discharged. The pressure flows through the gap between the upper and lower cavities, preventing the guide rod from having the driving force to extend or retract, thus avoiding overload and preventing damage to the reducer components. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of the present invention. Figure 2 This is one of the schematic diagrams of the main body disassembly structure in this invention; Figure 3 This is the second schematic diagram of the main body split structure in this invention; Figure 4 This is a side view of the structure in this invention; Figure 5 This is a schematic diagram of the cross-sectional structure in this invention; Figure 6 This is a schematic diagram of the side section structure in this invention; Figure 7 This is a schematic diagram of the guide rod and piston assembly structure in this invention; Figure 8 This is a cross-sectional view of the guide rod and piston assembly in this invention. Figure 9 This is a schematic diagram of the free end and piston assembly structure of the hydraulic telescopic rod in this invention; Figure 10 This is a cross-sectional view of the free end of the hydraulic telescopic rod and the piston assembly in this invention. Figure 11 This is a schematic diagram of the cleaning component structure in this invention; Figure 12 This is a schematic diagram of the supporting base plate and rotating assembly structure in this invention; Figure 13 This is a top view of the supporting base plate and rotating assembly in this invention.

[0020] In the diagram: 1. Mounting frame; 2. Drive cylinder; 3. Stand; 4. Hydraulic telescopic rod; 5. Compression cylinder; 6. Guide rod; 7. Piston assembly; 701. Electric telescopic rod; 702. Expansion piston; 703. Adjusting piston; 704. Annular cavity; 705. Flow guide hole; 706. Pressure gauge; 8. Pressure sensor; 9. Pipeline 1; 10. Pipeline 2; 11. Strip hole; 12. Vent hole; 13. Adsorption clamping assembly; 1301. Clamping frame ; 1302, Screw rod; 1303, Rotary hand; 1304, Electromagnetic plate; 14, Smooth rod; 15, Cleaning assembly; 1501, Snap ring; 1502, Semi-circular brush; 1503, Tightening handle; 16, Mounting hole; 17, Support base plate; 18, Slide rail; 19, Lead screw; 20, Smooth rod; 21, Moving table; 22, Rotating assembly; 2201, Rotating table; 2202, Threaded rod; 2203, Hand crank; 2204, Push plate; 23, Support column. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please refer to the following technical solutions provided by this invention. Figure 1-13 : An installation device for a speed reducer in a new energy vehicle includes a mounting frame 1, a drive cylinder 2 mounted on the mounting frame 1, two uprights 3 fixedly connected to both sides of the mounting frame 1, a hydraulic telescopic rod 4 mounted on the top of the uprights 3, a compression cylinder 5 mounted below the hydraulic telescopic rod 4, a guide rod 6 passing through the interior of the drive cylinder 2, and piston assemblies 7 mounted on the free end of the hydraulic telescopic rod 4 and on the guide rod 6.

[0023] See Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The piston assembly 7 includes an electric telescopic rod 701 and an expansion piston 702. The free end of the electric telescopic rod 701 is provided with an adjusting piston 703. The expansion piston 702 is provided with an annular cavity 704 and a guide hole 705 inside, and the annular cavity 704 and the guide hole 705 are connected. The guide hole 705 is cross-shaped, and a pressure gauge 706 is provided at the port of the guide hole 705. A pressure sensor 8 is provided at the end of the guide rod 6.

[0024] See Figure 6 There are three expansion pistons 702. The diameter of one large-diameter expansion piston 702 is larger than the diameter of the other two equal small-diameter expansion pistons 702. The expansion piston 702 separates the drive cylinder 2 into an upper cavity and a lower cavity. The upper cavity is connected to the bottom of one of the compression cylinders 5 through a first pipe 9, and the lower cavity is connected to the bottom of another compression cylinder 5 through a second pipe 10.

[0025] More specifically, when the free end of the hydraulic telescopic rod 4 extends or retracts, it drives the small-diameter expansion piston 702 to slide within the compression cylinder 5. If the small-diameter expansion piston 702 is pressed down, the internal pressure of the compression cylinder 5 increases and enters the upper cavity of the drive cylinder 2 through the first pipe 9, generating pressure in the upper cavity. At this time, the large-diameter expansion piston 702 is pressed down, driving the guide rod 6 to move downward. Similarly, when the free end of the other hydraulic telescopic rod 4 extends or retracts, the internal pressure of the compression cylinder 5 enters the lower cavity of the drive cylinder 2 through the second pipe 10, and... The large-diameter expansion piston 702 causes the guide rod 6 to move in the opposite direction. When the free end of one of the hydraulic telescopic rods 4 extends or retracts, the other hydraulic telescopic rod 4 closes. The free end of the other hydraulic telescopic rod 4 is in a free state and will extend or retract freely under the influence of external force. Since the diameter of the expansion piston 702 in the drive cylinder 2 is larger than the diameter of the expansion piston 702 in the compression cylinder 5, the force-bearing area of ​​the small-diameter expansion piston 702 is smaller, while the force-bearing area of ​​the large-diameter expansion piston 702 is larger. Therefore, the driving force of the hydraulic telescopic rod 4 is enhanced, avoiding insufficient driving force of the reducer components and saving effort.

[0026] When the expansion piston 702 wears, the contact pressure between the expansion piston 702 and the inner walls of the drive cylinder 2 and the compression cylinder 5 decreases, thus reducing the pressure in the annular cavity 704. Since the annular cavity 704, the guide hole 705, and the adjusting piston 703 form a sealed space, the pressure value of the pressure gauge 706 decreases. At this time, the free end of the electric telescopic rod 701 is extended, driving the adjusting piston 703 to move, increasing the internal pressure of the sealed space. This increases the internal pressure of the annular cavity 704, causing the expansion piston 702 to expand. This compensates for the wear of the expansion piston 702, thereby increasing the compression of the expansion piston 702, preventing pressure leakage of the expansion piston 702, and improving the accuracy of the assembly of automotive reducer components.

[0027] When the reading on pressure gauge 706 increases, the free end of electric telescopic rod 701 is activated, driving adjusting piston 703. This increases the air pressure inside annular cavity 704 through guide hole 705, further increasing the volume of expansion piston 702. This prevents excessive thrust from expansion piston 702 and further pressure leakage, and also improves the accuracy of component assembly in the automotive reducer.

[0028] When the pressure sensor 8 detects an excessively high value or reaches a set value, the electric telescopic rod 701 is activated to retract in the reverse direction, driving the adjusting piston 703 to move in the opposite direction. This creates negative pressure in the annular cavity 704 through the guide hole 705, causing the volume of the expansion piston 702 to contract. At this time, there is a gap between the expansion piston 702 and the drive cylinder 2, through which the pressure is discharged. The pressure flows through the gap between the upper and lower cavities, preventing the guide rod 6 from having the driving force to extend or retract, thus avoiding overload and preventing damage to the reducer components.

[0029] See Figure 8 and Figure 10 The adjusting piston 703 is respectively located at the free end of the hydraulic telescopic rod 4 and inside the guide rod 6, and the expanding piston 702 is respectively located at the free end of the hydraulic telescopic rod 4 and on the guide rod 6.

[0030] More specifically, when the free end of the hydraulic telescopic rod 4 extends or retracts, it drives the small-diameter expansion piston 702 to move. When the large-diameter expansion piston 702 moves, it drives the guide rod 6 to move.

[0031] See Figure 4 and Figure 6 Both the free end of the hydraulic telescopic rod 4 and the guide rod 6 are provided with strip-shaped holes 11, and the surface of the top of the compression cylinder 5 is provided with a vent hole 12, with the strip-shaped holes 11 and the vent hole 12 connected.

[0032] More specifically, when the adjusting piston 703 is driven to move inside the free end of the hydraulic telescopic rod 4, the gas inside the free end of the hydraulic telescopic rod 4 enters the compression cylinder 5 through the strip hole 11 and is then discharged through the vent hole 12, ensuring the smooth operation of the hydraulic telescopic rod 4, and the driving movement of the adjusting piston 703 at this point is not affected; when the adjusting piston 703 is driven to move inside the guide rod 6, the gas inside the guide rod 6 is discharged through the strip hole 11, ensuring that the driving movement of the adjusting piston 703 at this point is not affected.

[0033] See Figure 1 The end of the guide rod 6 is provided with an adsorption clamping assembly 13 via a pressure sensor 8. The pressure sensor 8 is located at the connection between the adsorption clamping assembly 13 and the guide rod 6.

[0034] More specifically, when the guide rod 6 drives the adsorption clamping assembly 13 to be subjected to force, the detection value of the pressure sensor 8 changes. As the force on the adsorption clamping assembly 13 increases, the detection value of the pressure sensor 8 also increases.

[0035] See Figure 2 , Figure 3 , Figure 5 and Figure 6 Two optical rods 14 are fixedly installed at the end of the adsorption clamping assembly 13, and the two optical rods 14 pass through the interior of the mounting frame 1; the adsorption clamping assembly 13 includes a clamping frame 1301, and screw rods 1302 are threadedly connected to both sides of the clamping frame 1301. A rubber pad is provided at one end of the screw rod 1302, and the rubber pad is located inside the clamping frame 1301. A handle 1303 is provided at the other end of the screw rod 1302; an electromagnetic plate 1304 is provided at the bottom of the clamping frame 1301.

[0036] More specifically, when the adsorption clamping assembly 13 is moved, it drives the two light rods 14 to move. Since the light rods 14 pass through the interior of the mounting frame 1, the stability of the adsorption clamping assembly 13 is increased, preventing it from shaking during long-term use. When the two rotary handles 1303 rotate relative to each other, they drive the screw rods 1302 to rotate, causing the two screw rods 1302 to move closer or further apart. Combined with the rubber pads, this fixes the components of the reducer. The rubber pads prevent damage to the components during clamping, thus facilitating component assembly. When the electromagnetic plate 1304 is activated, it generates magnetic force, which adsorbs and assembles the components of the reducer.

[0037] See Figure 2 , Figure 6 and Figure 11 Cleaning components 15 are provided at the extension and retraction points of the drive cylinder 2 and the guide rod 6. The cleaning components 15 include two retaining rings 1501. One retaining ring 1501 is fixedly connected to the mounting bracket 1, and the other retaining ring 1501 is fixedly connected to the drive cylinder 2. Two semi-circular brushes 1502 are provided inside the retaining ring 1501, and the two semi-circular brushes 1502 are adapted to the retaining ring 1501. The two semi-circular brushes 1502 are symmetrically arranged in a circle. The two semi-circular brushes 1502 are put on the guide rod 6. Two symmetrical handles 1503 are threaded on the retaining ring 1501. The handles 1503 are used to fix the semi-circular brushes 1502.

[0038] More specifically, the drive cylinder 2 and the guide rod 6 are sealed with a sealing rubber ring to prevent pressure leakage at the seal between the drive cylinder 2 and the guide rod 6. Furthermore, the guide rod 6 is exposed to the outside for a long time, making it easy for dust to adhere to its surface. This will affect the extension and retraction of the guide rod 6 inside the drive cylinder 2, causing dust to accumulate at the seal between the drive cylinder 2 and the guide rod 6, making it difficult to clean. When the handle 1503 is turned, the semi-circular brush 1502 can be replaced or fixed. When the guide rod 6 extends inside the drive cylinder 2, the two symmetrical semi-circular brushes 1502 clean the surface of the guide rod 6.

[0039] See Figure 1The mounting bracket 1 is U-shaped, with reinforcing ribs on the inner side of the right angle, and multiple mounting holes 16 are provided on the mounting bracket 1.

[0040] More specifically, by using the mounting bracket 1 and the mounting hole 16 together, the mounting bracket 1 can be fixed to the support column 23 with bolts.

[0041] See Figure 5 and Figure 8 The expanding piston 702 divides the guide rod 6 into two sections. The strip hole 11 is set on one section of the guide rod 6. The length of the one section of the guide rod 6 is greater than the length of the other section of the guide rod 6, so that the strip hole 11 is always exposed to the outside, allowing the strip hole 11 to contact the outside air.

[0042] More specifically, when the expansion piston 702 is driven to move within the drive cylinder 2, the strip hole 11 is exposed to the outside, allowing external air to enter the interior of the guide rod 6, so that the use of the strip hole 11 is not affected.

[0043] See Figure 1 , Figure 12 and Figure 13 Two slide rails 18 are fixedly connected to both sides of the upper surface of the support base plate 17. The two slide rails 18 are respectively equipped with a lead screw 19 and a guide rod 20. A moving platform 21 is slidably connected inside the slide rail 18. A rotating component 22 is installed in the middle of the moving platform 21 through a damping bearing. Support columns 23 are fixedly connected to both sides of the upper surface of the support base plate 17. The support columns 23 are fixedly installed to the mounting frame 1 by bolts. A handle 24 is fixedly connected to the end of the lead screw 19.

[0044] More specifically, when the hand lever 24 is rotated, the lead screw 19 is driven to rotate, and the lead screw 19 drives the moving stage 21 to move back and forth, and makes the moving stage 21 move within the two slide rails 18. The stability of the moving stage 21 can be increased by the guide rod 20 and the slide rails 18.

[0045] See Figure 1 , Figure 12 and Figure 13 The rotating assembly 22 includes a rotating table 2201. Threaded rods 2202 are provided at both ends of the rotating table 2201. A handle 2203 is provided at the end of each threaded rod 2202. A push plate 2204 is provided at the other end of the threaded rod 2202 via a thrust bearing. Anti-slip texture is provided on the push plate 2204.

[0046] More specifically, when the handle 2203 is turned, the handle 2203 drives the threaded rod 2202 to rotate, and the threaded rod 2202 drives the push plate 2204 to move, so that the two push plates 2204 slide on the rotary table 2201 and move closer or further apart, thereby clamping the car reducer or components and facilitating the assembly of the reducer. The working principle and usage process of this invention are as follows: When installing a car reducer, a test bench is needed to assemble the reducer components. Insufficient driving force on the test bench, or an imbalance in driving force due to prolonged use, makes assembling the reducer components laborious. When the free end of the hydraulic telescopic rod 4 extends or retracts, it drives the small-diameter expansion piston 702 to slide within the compression cylinder 5. If the small-diameter expansion piston 702 is pressed down, the internal pressure of the compression cylinder 5 increases and enters the upper cavity of the drive cylinder 2 through pipe 9, creating pressure in the upper cavity. At this time, the large-diameter expansion piston 702 presses down, driving the guide rod 6 to move downwards. Similarly, when the free end of the other hydraulic telescopic rod 4 extends or retracts, it causes the pressure... The internal pressure of the compression cylinder 5 enters the lower cavity of the drive cylinder 2 through the second pipe 10. The guide rod 6 moves in the opposite direction through the large-diameter expansion piston 702. When the free end of one hydraulic telescopic rod 4 extends or retracts, the other hydraulic telescopic rod 4 closes. The free end of the other hydraulic telescopic rod 4 is in a free state and can extend or retract freely under the influence of external force. Since the diameter of the expansion piston 702 in the drive cylinder 2 is larger than the diameter of the expansion piston 702 in the compression cylinder 5, the force-bearing area of ​​the small-diameter expansion piston 702 is smaller, while the force-bearing area of ​​the large-diameter expansion piston 702 is larger. Therefore, the driving force of the hydraulic telescopic rod 4 is enhanced, avoiding insufficient driving force in the assembly of reducer components, and saving effort.

[0047] During the assembly of automotive reducer components, the expansion piston 702 may wear, potentially leading to pressure leakage. This reduces the precision of the guide rod 6's extension and retraction, causing errors in the reducer's components and resulting in improper assembly. When the expansion piston 702 wears, the contact pressure between it and the inner walls of the drive cylinder 2 and compression cylinder 5 decreases, reducing the pressure in the annular cavity 704. Since the annular cavity 704, guide hole 705, and adjusting piston 703 form a sealed space, the pressure reading on pressure gauge 706 decreases. This triggers the extension of the free end of the electric telescopic rod 701, driving the adjusting piston 703 to move. This increases the internal pressure of the sealed space, further increasing the internal pressure of the annular cavity 704. The expansion piston 702 expands, compensating for the wear and increasing its compression, thus preventing pressure leakage and improving the precision of the automotive reducer component assembly.

[0048] When the components of the automotive reducer are assembled, as the driving force of the expansion piston 702 is increased, the internal pressure of the drive cylinder 2 and the compression cylinder 5 increases, which increases the risk of pressure leakage from the expansion piston 702. When the detected value of the pressure gauge 706 increases, the free end of the electric telescopic rod 701 is activated to drive the adjusting piston 703. This increases the air pressure inside the annular cavity 704 through the guide hole 705, thereby further increasing the volume of the expansion piston 702. This prevents the expansion piston 702 from having excessive thrust and further pressure leakage, and further increases the accuracy of the automotive reducer component assembly.

[0049] When assembling components of the automotive reducer, if the bearing capacity of the guide rod 6 is too high, the mounting device is prone to overload, causing excessive compression of the reducer components during assembly and potentially damaging them. When the detection value of the pressure sensor 8 is too high, or reaches the set value, the electric telescopic rod 701 is activated to retract in the reverse direction, driving the adjusting piston 703 to move in the reverse direction. This creates negative pressure in the annular cavity 704 through the guide hole 705, causing the volume of the expansion piston 702 to contract. At this time, there is a gap between the expansion piston 702 and the drive cylinder 2, through which the pressure is discharged. The pressure flows through the gap between the upper and lower cavities, preventing the guide rod 6 from extending or retracting, thus avoiding overload and preventing damage to the reducer components.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An installation device for a speed reducer in a new energy vehicle, comprising a mounting frame (1) and a supporting base plate (17), characterized in that: The mounting frame (1) is provided with a drive cylinder (2), and two uprights (3) are fixedly connected to both sides of the mounting frame (1). A hydraulic telescopic rod (4) is provided on the top of the uprights (3), and a compression cylinder (5) is provided below the hydraulic telescopic rod (4). A guide rod (6) passes through the inside of the drive cylinder (2), and a piston assembly (7) is provided on the free end of the hydraulic telescopic rod (4) and the guide rod (6). The piston assembly (7) includes an electric telescopic rod (701) and an expanding piston (702). An adjusting piston (703) is provided at the free end of the electric telescopic rod (701). An annular cavity (704) and a guide hole (705) are provided inside the expanding piston (702). The cavity (704) and the guide hole (705) are connected. The guide hole (705) is cross-shaped. A pressure gauge (706) is provided at the port of the guide hole (705). A pressure sensor (8) is provided at the end of the guide rod (6). There are three expansion pistons (702), one of which is a large-diameter expansion piston (702) with a diameter greater than the other two equal-diameter small-diameter expansion pistons (702). The expansion piston (702) separates the drive cylinder (2) into an upper cavity and a lower cavity. The upper cavity is connected to the bottom of one of the compression cylinders (5) through a first pipe (9), and the lower cavity is connected to the bottom of another compression cylinder (5) through a second pipe (10).

2. The mounting device for a new energy vehicle reducer according to claim 1, characterized in that: The adjusting piston (703) is respectively disposed at the free end of the hydraulic telescopic rod (4) and inside the guide rod (6), and the expanding piston (702) is respectively disposed at the free end of the hydraulic telescopic rod (4) and on the guide rod (6).

3. The mounting device for a new energy vehicle reducer according to claim 1, characterized in that: The free end of the hydraulic telescopic rod (4) and the guide rod (6) are provided with strip holes (11), and the surface of the top of the compression cylinder (5) is provided with a vent hole (12), and the strip hole (11) is connected to the vent hole (12).

4. The mounting device for a new energy vehicle reducer according to claim 1, characterized in that: The end of the guide rod (6) is provided with an adsorption clamping assembly (13) via a pressure sensor (8), and the pressure sensor (8) is located at the connection between the adsorption clamping assembly (13) and the guide rod (6). Two light rods (14) are fixedly installed at the end of the adsorption clamping assembly (13), and the two light rods (14) pass through the interior of the mounting frame (1).

5. The mounting device for a new energy vehicle reducer according to claim 4, characterized in that: The adsorption clamping assembly (13) includes a clamping frame (1301), both sides of which are threaded with screw rods (1302), and the ends of the screw rods (1302) are provided with a handle (1303); an electromagnetic plate (1304) is provided at the bottom of the clamping frame (1301).

6. The mounting device for a new energy vehicle reducer according to claim 1, characterized in that: The drive cylinder (2) and the guide rod (6) are both equipped with a cleaning component (15). The cleaning component (15) includes a retaining ring (1501). There are two retaining rings (1501). One retaining ring (1501) is fixedly connected to the mounting bracket (1), and the other retaining ring (1501) is fixedly connected to the drive cylinder (2).

7. The mounting device for a new energy vehicle reducer according to claim 6, characterized in that: The retaining ring (1501) is provided with two semi-circular brushes (1502) inside, and the two semi-circular brushes (1502) are adapted to the retaining ring (1501). The two semi-circular brushes (1502) are placed symmetrically in a circle. The two semi-circular brushes (1502) are put on the guide rod (6). The retaining ring (1501) is threaded with two symmetrical screwdrivers (1503), and the screwdrivers (1503) are used to fix the semi-circular brushes (1502).

8. The mounting device for a new energy vehicle reducer according to claim 1, characterized in that: The mounting bracket (1) is U-shaped, and a reinforcing rib is provided on the inner side of the right angle of the mounting bracket (1), and multiple mounting holes (16) are provided on the mounting bracket (1).

9. The mounting device for a new energy vehicle reducer according to claim 3, characterized in that: The expansion piston (702) divides the guide rod (6) into two sections. The strip hole (11) is set on one section of the guide rod (6). The length of the one section of the guide rod (6) is greater than the length of the other section of the guide rod (6), so that the strip hole (11) is always exposed to the outside, allowing the strip hole (11) to contact the outside air.

10. The mounting device for a new energy vehicle reducer according to claim 3, characterized in that: Two slide rails (18) are fixedly connected to both sides of the upper surface of the support base plate (17). The two slide rails (18) are respectively provided with a lead screw (19) and a guide rod (20). A moving platform (21) is slidably connected inside the slide rail (18). A rotating component (22) is installed in the middle of the moving platform (21) through a damping bearing. Support columns (23) are fixedly connected to both sides of the upper surface of the support base plate (17). The support columns (23) are fixedly installed to the mounting frame (1) by bolts. A handle (24) is fixedly connected to the end of the lead screw (19). The rotating assembly (22) includes a rotating table (2201), with threaded rods (2202) at both ends of the rotating table (2201), a handle (2203) at one end of the threaded rods (2202), and a push plate (2204) at the other end of the threaded rods (2202) via a thrust bearing. The push plate (2204) has anti-slip textures.

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