Heavy truck rear axle leaf spring pressing plate

Abstract

The utility model discloses a heavy truck rear axle plate spring pressure plate relates to vehicle accessory technical field, including the pressure plate body, the pressure plate body is opened the center bolt hole, and the pressure plate body is opened four symmetrical U shape bolt hole, the upside fixed connection of pressure plate body has the accommodating box, and the pressure plate body is provided with inertia oil supply module, the inertia oil supply module includes the oil storage sponge, and the oil storage sponge is located in the accommodating box. The utility model discloses heavy truck automobile circuit electric leakage detection device can make the device through the bending and resilience of the plate spring when the vehicle operation, utilize the inertia that the counterweight produces, constantly deliver the lubricating oil in the oil storage sponge to the center bolt and U type bolt fixed on the center bolt hole and U shape bolt hole, thereby effectively to its coating and protection, reduce the corrosion of center bolt and U type bolt, protect its use function, ensure that the pressure plate can firmly compress into a whole with multiple steel plate springs, make the vehicle can safely run the effect.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a pressure plate for a rear axle leaf spring of a heavy truck. Background Technology

[0002] The core function of the leaf spring pressure plate of the rear axle of a heavy truck is to firmly press multiple leaf springs into a whole and guide them to deform correctly in order to transmit the force and torque between the wheel and the frame.

[0003] A leaf spring is made up of multiple spring steel sheets of different lengths stacked together. Without a pressure plate, these individual sheets would bend independently under stress, resulting in inter-sheet friction and misalignment, and would not be able to work as a whole "beam". The pressure plate, through its strong clamping force, firmly fixes these individual sheets in the center, so that they can deform together under load and share the load.

[0004] U-bolts are installed on the leaf spring pressure plate to provide pre-clamping force for the leaf springs, and center bolts are installed to pass through each leaf spring to align them. However, during the use of the leaf spring pressure plate, the pressure plate located at the rear axle of the vehicle often comes into contact with sewage and dust, causing the U-bolts and center bolts on the pressure plate to rust, resulting in a decrease in its performance and posing a great threat to the safe use of the leaf springs. Utility Model Content

[0005] This utility model discloses a heavy-duty truck rear axle leaf spring pressure plate, which aims to solve the technical problem that existing leaf spring pressure plates cannot effectively protect the U-bolts and center bolts on the pressure plate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A heavy-duty truck rear axle leaf spring pressure plate includes a pressure plate body with a central bolt hole and four symmetrical U-shaped bolt holes. A receiving box is fixedly connected to the upper side of the pressure plate body, and an inertial oil supply module is provided on the pressure plate body. The inertial oil supply module includes an oil storage sponge located inside the receiving box. A push plate is slidably connected to the inner wall of the receiving box. An arc-shaped tube I is provided above the central bolt hole and communicates with the receiving box. Multiple circumferentially distributed nozzles I are provided on the arc-shaped tube I. Arc-shaped tubes II are provided above the four U-shaped bolt holes, and multiple circumferentially distributed nozzles II are provided on each arc-shaped tube II. The two arc-shaped tubes II located on the same side are fixedly connected to the same oil guide pipe, and both oil guide pipes communicate with the receiving box.

[0007] In a preferred embodiment, two symmetrical guide rods are fixedly connected to the side of the push plate away from the oil-storing sponge. A single sealing cover is slidably connected to the outside of the two guide rods. The sealing cover is fitted against the side of the receiving box opposite to it. Two protruding plates are fixedly connected to the outside of the receiving box. A fixing screw is fixedly connected to the outside of each protruding plate. A boss is slidably connected to the outside of each fixing screw. The boss is fixedly connected to the side of the sealing cover opposite to it. A fastening nut is provided on the outside of each of the two fixing screws. The fastening nut is located on the side of the boss away from the receiving box, and the fastening nut is fitted against the side of the boss opposite to it. A circular hole is provided on the sealing cover, and a fixing cylinder is fixedly connected to the inner wall of the circular hole. An air bladder is fixedly connected to the inner wall of the fixing cylinder on the side away from the sealing cover. The end of the air bladder away from the sealing cover is fixedly connected to the outside of the push plate. An orifice is provided on the fixing cylinder, and an air guide hose is fixedly connected to the orifice. A one-way valve is provided on the outside of the air guide hose. The air guide hose is located outside the receiving box, and the outside of the arc-shaped tube... An annular hollow groove is provided, the bottom of which is fixedly connected to the upper side of the pressure plate body. The annular hollow groove is also fixedly connected to the side opposite to the receiving box. Annular hollow grooves are provided on the exterior of each of the four arc-shaped tubes, and the bottoms of these grooves are fixedly connected to the upper side of the pressure plate body. An mounting cylinder is fixedly connected to the upper side of the pressure plate body. A guide rod is fixedly connected to the inner top wall of the mounting cylinder. The bottom of the guide rod is flush with the upper side of the pressure plate body, and a rubber pad is provided on the exterior of the guide rod. The bottom of the rubber pad is fixedly connected to the upper side of the pressure plate body, and the outer side of the guide rod is slidably connected to the counterweight. The bottom of the counterweight is in contact with the upper side of the rubber pad. An airbag is provided on the outside of the guide rod. The upper side of the airbag is fixedly connected to the inner wall of the top of the mounting cylinder. Both the airbag and the mounting cylinder have small holes. The end of the air guide hose away from the receiving box is fixedly connected to the inner wall of the small hole on the airbag. A check valve is provided on the airbag. A groove is provided on the upper side of the mounting cylinder, and the check valve is located in the groove.

[0008] In a preferred embodiment, the mounting cylinder is externally fixedly connected to two symmetrical fixing blocks, each with a lead screw fixedly connected to its bottom. The two lead screws are slidably connected to the same contact plate. The mounting cylinder has two symmetrical sliding grooves, the inner walls of which are slidably connected to the outer surface of the contact plate. The contact plate has an opening, the inner wall of which is slidably connected to the outer surface of a guide rod. The upper side of the contact plate is fixedly connected to the bottom of the second airbag. Adjusting nuts are provided on the outer surface of each lead screw, and springs are wrapped around the outer surface of each lead screw. One end of each spring contacts the bottom of the adjusting nut on the same side, and the other end contacts the upper side of the contact plate.

[0009] As can be seen from the above, the heavy-duty truck circuit leakage detection device provided by this utility model has the technical effect of enabling the device to continuously deliver lubricating oil from the oil storage sponge to the central bolt and U-bolt fixed on the central bolt hole and U-bolt hole by utilizing the bending and rebound of the leaf spring during vehicle operation and the inertia generated by the counterweight, thereby effectively coating and protecting them, reducing the corrosion of the central bolt and U-bolt, protecting their function, and ensuring that the pressure plate can firmly press multiple steel leaf springs into a whole, so that the vehicle can operate safely. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of a heavy-duty truck rear axle leaf spring pressure plate proposed in this utility model.

[0011] Figure 2 This is a top view of the structure of a heavy-duty truck rear axle leaf spring pressure plate proposed in this utility model.

[0012] Figure 3 This is a schematic diagram of the receiving box and annular hollow groove of the rear axle spring pressure plate of a heavy truck proposed in this utility model.

[0013] Figure 4 This is a schematic diagram of the mounting cylinder structure of the rear axle leaf spring pressure plate of a heavy truck proposed in this utility model.

[0014] In the attached diagram: 1. Pressure plate body; 2. Center bolt hole; 3. U-bolt hole; 4. Receiving box; 5. Inertial oil supply module; 501. Oil storage sponge; 502. Push plate; 503. Guide rod; 504. Sealing cover; 505. Fixing cylinder; 506. Airbag; 507. Air guide hose; 508. One-way valve; 509. Fixing screw; 510. Boss; 511. Fastening nut; 512. Annular hollow groove one; 513. Arc tube one; 514. Nozzle one; 515. Oil guide pipe; 516. Annular hollow groove two; 517. Arc tube two; 518. Nozzle two; 519. Mounting cylinder; 520. Rubber pad; 521. Guide rod; 522. Counterweight; 523. Airbag two; 524. Check valve; 6. Screw; 7. Adjusting nut; 8. Spring; 9. Contact plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] The heavy-duty truck rear axle leaf spring pressure plate disclosed in this utility model is mainly used in scenarios where existing leaf spring pressure plates cannot effectively protect the U-bolts and center bolts on the pressure plate.

[0017] Reference Figures 1-4 A heavy-duty truck rear axle leaf spring pressure plate includes a pressure plate body 1, a central bolt hole 2, and four symmetrical U-shaped bolt holes 3. A receiving box 4 is bolted to the upper side of the pressure plate body 1. An inertial oil supply module 5 is provided on the pressure plate body 1, including an oil storage sponge 501 located inside the receiving box 4. A push plate 502 is slidably connected to the inner wall of the receiving box 4. Above the central bolt hole 2... An arc-shaped tube 513 is provided, which is connected to the receiving box 4. Multiple circumferentially distributed nozzles 514 are provided on the arc-shaped tube 513. An arc-shaped tube 517 is provided above each of the four U-shaped bolt holes 3. Multiple circumferentially distributed nozzles 518 are provided on each arc-shaped tube 517. The two arc-shaped tubes 517 on the same side are connected to the same oil guide tube 515 by bolts. Both oil guide tubes 515 are connected to the receiving box 4.

[0018] Specifically, the device utilizes the inertial oil supply module 5 to continuously deliver lubricating oil from the oil storage sponge 501 to the central bolt and U-bolt fixed in the central bolt hole 2 and U-bolt hole 3 by leveraging the bending and rebound of the leaf springs during vehicle operation and the inertia generated by the counterweight 522. This effectively coats and protects the lubricating oil, reduces corrosion of the central bolt and U-bolt, protects their functionality, and ensures that the pressure plate can firmly press the multiple leaf springs into a whole, allowing the vehicle to operate safely.

[0019] Reference Figure 3 and Figure 4In a preferred embodiment, the side of the push plate 502 away from the oil-collecting sponge 501 is bolted with two symmetrical guide rods 503. The two guide rods 503 are slidably connected to the same sealing cover 504. The sealing cover 504 is fitted against the side of the receiving box 4 opposite to it. The receiving box 4 is bolted with two protruding plates. Each protruding plate is bolted with a fixing screw 509. Each fixing screw 509 is slidably connected with a boss 510. The side of the boss 510 opposite to the sealing cover 504 is bolted to it. Each fixing screw 509 is provided with a fastening nut 511. All components 1 are located on the side of the boss 510 away from the receiving box 4. The fastening nut 511 is fitted to the opposite side of the boss 510. A circular hole is provided on the sealing cover 504, and a fixing cylinder 505 is bolted to the inner wall of the hole. An airbag 506 is bolted to the inner wall of the fixing cylinder 505 on the side away from the sealing cover 504. The end of the airbag 506 away from the sealing cover 504 is bolted to the outside of the push plate 502. An orifice is provided on the fixing cylinder 505, and a gas guide hose 507 is bolted to the orifice. A one-way valve 508 is provided on the outside of the gas guide hose 507. The gas guide hose 507 is located outside the receiving box 4, and the arc-shaped tube 513... An annular hollow groove 512 is provided on the outside. The bottom of the annular hollow groove 512 is bolted to the upper side of the pressure plate body 1. The side of the annular hollow groove 512 opposite to the receiving box 4 is bolted. Annular hollow grooves 516 are provided on the outside of each of the four arc-shaped tubes 517. The bottom of each annular hollow groove 516 is bolted to the upper side of the pressure plate body 1. An installation cylinder 519 is bolted to the upper side of the pressure plate body 1. A guide rod 521 is bolted to the top inner wall of the installation cylinder 519. The bottom of the guide rod 521 is in contact with the upper side of the pressure plate body 1, and a rubber pad 520 is provided on the outside of the guide rod 521. The bottom of the pad 520 is bolted to the upper side of the pressure plate body 1. The outer side of the guide rod 521 is slidably connected to the counterweight 522. The bottom of the counterweight 522 is in contact with the upper side of the rubber pad 520. An airbag 523 is provided on the outside of the guide rod 521. The upper side of the airbag 523 is bolted to the inner wall of the top of the mounting cylinder 519. Both the airbag 523 and the mounting cylinder 519 have small holes. The end of the air guide hose 507 away from the receiving box 4 is bolted to the inner wall of the small hole on the airbag 523. A check valve 524 is provided on the airbag 523. A groove is provided on the upper side of the mounting cylinder 519. The check valve 524 is located in the groove.

[0020] In specific application scenarios, the inertial oil supply module 5 is mainly suitable for the inertial oil supply link in the inertial oil supply process. That is, the inertial oil supply module 5 uses the mounting cylinder 519, guide rod 521, counterweight 522 and airbag 2 523 to enable the device to continuously apply lubricating oil to the center bolt and U-bolt on the pressure plate body 1 during vehicle operation by using the impact of the counterweight 522 on the airbag 2 523 when the vehicle is bumping. This ensures continuous protection of the vehicle leaf spring pressure plate and improves the protection effect. The use of arc tube 1 513, nozzle 1 514, arc tube 2 517 and nozzle 2 518 can increase the coating range and improve the coating uniformity when applying lubricating oil to the center bolt and U-bolt. The use of annular hollow groove 1 512 and annular hollow groove 2 516 can protect arc tube 1 513 and arc tube 2 517, thereby reducing the entry of external dust and sewage, reducing the risk of blockage, and improving the coating efficiency of lubricating oil.

[0021] Reference Figure 4 In a preferred embodiment, two symmetrical fixing blocks are bolted to the outside of the mounting cylinder 519. The bottom of each fixing block is bolted to a lead screw 6. The two lead screws 6 are slidably connected to the same contact plate 9. Two symmetrical sliding grooves are provided on the mounting cylinder 519. The inner walls of the sliding grooves are slidably connected to the outside of the contact plate 9. The contact plate 9 has an opening. The inner wall of the opening is slidably connected to the outside of the guide rod 521. The upper side of the contact plate 9 is bolted to the bottom of the second airbag 523. Adjusting nuts 7 are provided on the outside of each of the two lead screws 6. Springs 8 are wrapped around the outside of each lead screw 6. One end of each spring 8 contacts the bottom of the adjusting nut 7 on the same side, and the other end contacts the upper side of the contact plate 9.

[0022] In specific application scenarios, the device utilizes the lead screw 6, adjusting nut 7, spring 8, and contact plate 9 to provide resistance to the impact force of counterweight 522 on the contact plate 9 by changing the compression of spring 8. This resistance offsets part of the impact force, reduces the compression degree of airbag 523, reduces the air delivery of airbag 523, and reduces the amount of lubricating oil delivered to the device. As a result, the vehicle can freely adjust the lubricating oil supply according to the driving environment, saving lubricating oil waste and reducing costs while ensuring protective force.

[0023] Working principle: The oil-soaked sponge 501 is pushed into the receiving box 4. The protrusion 510 is inserted into the fixing screw 509, aligning the sealing cover 504 with the receiving box 4. The fastening nut 511 is then tightened. During vehicle operation, bumpy road conditions cause the leaf spring to continuously bend and rebound. The resulting inertia causes the counterweight 522 on the mounting cylinder 519 to continuously impact the second airbag 523. This impact forces the second airbag 523 to deliver internal air into the airbag 523 through the air duct hose 507. In section 06, under the action of the one-way valve 508, air can only be continuously stored in the airbag 506 and cannot return. However, through the check valve 524, after the counterweight 522 falls, the elasticity of the second airbag 523 itself allows air to re-enter the second airbag 523 through the check valve 524. The continuously expanding and elongating airbag 506 pushes the push plate 502 to slide in the receiving box 4, thereby continuously squeezing out the lubricating oil in the oil storage sponge 501, thus delivering the lubricating oil to the arc-shaped tube 513. In the oil guide pipe 515, the arc-shaped pipe 513 sprays lubricating oil through the nozzle 514 onto the center bolt hole 2, and the oil guide pipe 515 sprays lubricating oil through the nozzle 518 on the arc-shaped pipe 517 onto the U-shaped bolt hole 3, thereby coating the center bolt and the U-shaped bolt. When it is necessary to control the amount of lubricating oil applied, the adjusting nut 7 is rotated, causing the adjusting nut 7 to move downward on the screw 6, which compresses the spring 8. When the counterweight 522 impacts the contact plate 9 by inertia, the sliding amount of the contact plate 9 on the screw 6 is reduced. Under the action of the spring 8, the compression degree of the airbag 523 is reduced, and the amount of air delivered through the air guide hose 507 is reduced.

[0024] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A rear axle leaf spring pressure plate for heavy-duty trucks, comprising a pressure plate body (1), characterized in that, The pressure plate body (1) has a central bolt hole (2) and four symmetrical U-shaped bolt holes (3). A receiving box (4) is fixedly connected to the upper side of the pressure plate body (1), and an inertial oil supply module (5) is provided on the pressure plate body (1). The inertial oil supply module (5) includes an oil storage sponge (501), which is located inside the receiving box (4). A push plate (502) is slidably connected to the inner wall of the receiving box (4). An arc-shaped [feature] is provided above the central bolt hole (2). Pipe 1 (513) is connected to the receiving box (4). Multiple circumferentially distributed nozzles 1 (514) are provided on the arc-shaped pipe 1 (513). Arc-shaped pipe 2 (517) is provided above each of the four U-shaped bolt holes (3). Multiple circumferentially distributed nozzles 2 (518) are provided on the arc-shaped pipe 2 (517). The two arc-shaped pipe 2 (517) located on the same side are fixedly connected to the same oil guide pipe (515). Both oil guide pipes (515) are connected to the receiving box (4).

2. The heavy-duty truck rear axle leaf spring pressure plate according to claim 1, characterized in that, The push plate (502) is fixedly connected to two symmetrical guide rods (503) on the side away from the oil storage sponge (501). The two guide rods (503) are slidably connected to the same sealing cover (504). The sealing cover (504) is attached to the side opposite to the receiving box (4). The receiving box (4) is fixedly connected to two protruding plates. The outside of each protruding plate is fixedly connected to a fixing screw (509). The outside of each fixing screw (509) is slidably connected to a boss (510). The boss (510) is fixedly connected to the side opposite to the sealing cover (504).

3. The heavy-duty truck rear axle leaf spring pressure plate according to claim 2, characterized in that, Both of the fixed screws (509) are provided with fastening nuts (511) on their exteriors. The fastening nuts (511) are located on the side of the boss (510) away from the receiving box (4). The fastening nuts (511) and the side opposite to the boss (510) are in contact. The sealing cover (504) has a round hole, and a fixing cylinder (505) is fixedly connected to the inner wall of the round hole. An airbag (506) is fixedly connected to the inner wall of the fixing cylinder (505) on the side away from the sealing cover (504).

4. The heavy-duty truck rear axle leaf spring pressure plate according to claim 3, characterized in that, The end of the airbag (506) away from the sealing cover (504) is fixedly connected to the outside of the push plate (502). The fixed cylinder (505) has an opening, and a gas guide hose (507) is fixedly connected inside the opening. A one-way valve (508) is provided on the outside of the gas guide hose (507). The gas guide hose (507) is located outside the receiving box (4). An annular hollow groove (512) is provided on the outside of the arc tube (513). The bottom of the annular hollow groove (512) is fixedly connected to the upper side of the pressure plate body (1). The annular hollow groove (512) is fixedly connected to the side opposite to the receiving box (4). Annular hollow grooves (516) are provided on the outside of the four arc tubes (517). The bottom of the annular hollow grooves (516) is fixedly connected to the upper side of the pressure plate body (1).

5. A heavy-duty truck rear axle leaf spring pressure plate according to claim 4, characterized in that, An installation cylinder (519) is fixedly connected to the upper side of the pressure plate body (1). A guide rod (521) is fixedly connected to the top inner wall of the installation cylinder (519). The bottom of the guide rod (521) is in contact with the upper side of the pressure plate body (1). A rubber pad (520) is provided on the outside of the guide rod (521). The bottom of the rubber pad (520) is fixedly connected to the upper side of the pressure plate body (1). A counterweight (522) is slidably connected to the outside of the guide rod (521). The bottom of the counterweight (522) is in contact with the upper side of the rubber pad (520).

6. A heavy-duty truck rear axle leaf spring pressure plate according to claim 5, characterized in that, The guide rod (521) is provided with an airbag (523) on its outside. The upper side of the airbag (523) is fixedly connected to the inner wall of the top of the mounting cylinder (519). Both the airbag (523) and the mounting cylinder (519) are provided with fine holes. The end of the air guide hose (507) away from the receiving box (4) is fixedly connected to the inner wall of the fine hole on the airbag (523). The airbag (523) is provided with a check valve (524). The upper side of the mounting cylinder (519) is provided with a slot, and the check valve (524) is located in the slot.

7. A heavy-duty truck rear axle leaf spring pressure plate according to claim 6, characterized in that, The mounting cylinder (519) is externally fixedly connected to two symmetrical fixing blocks. The bottom of each fixing block is fixedly connected to a lead screw (6). The two lead screws (6) are slidably connected to the same contact plate (9). The mounting cylinder (519) has two symmetrical sliding grooves. The inner walls of the sliding grooves are slidably connected to the outside of the contact plate (9). The contact plate (9) has an opening. The inner wall of the opening is slidably connected to the outside of the guide rod (521). The upper side of the contact plate (9) is fixedly connected to the bottom of the second airbag (523). The two lead screws (6) are both provided with adjusting nuts (7). The lead screws (6) are both surrounded by springs (8). One end of the springs (8) is in contact with the bottom of the adjusting nut (7) on the same side, and the other end is in contact with the upper side of the contact plate (9).

Images