Lower support of main oil cylinder of car unloader

Abstract

The utility model relates to a car unloader main oil cylinder lower support which comprises a bottom plate, two vertical plates are arranged on the bottom plate in a spaced mode, a lower semicircular hole is formed in the center of the upper end of each vertical plate, the upper ends of the vertical plates are connected with a copper bush gland through threads, an upper semicircular hole is formed in the center of the lower end of the copper bush gland, and the upper semicircular hole and the lower semicircular hole are matched to form a copper bush installation hole. Copper sleeves are arranged in the copper sleeve mounting holes, limiting circular rings are arranged at the two ends of the side wall of each copper sleeve respectively, pin shafts are arranged on the two copper sleeves, the middle portions of the pin shafts are designed to be shaft shoulders, and the lower end of the main oil cylinder is mounted on the shaft shoulders. The hinge pin has the advantages of being reasonable in structural design, convenient to disassemble and assemble, small in follow-up abrasion of the hinge pin, less in threaded connection, high in maintenance efficiency, long in service life and the like.

Description

Technical field:

[0001] The utility model relates to the technical field of hydraulic car unloading, in particular to a lower support of a main oil cylinder of a car unloading machine. Background technology:

[0002] Hydraulic unloading machines are mainly used for unloading trucks. The working principle and structural layout of existing hydraulic unloading machines are relatively mature. They mainly include a concrete foundation. A unloading platform is rotatably provided at one end of the concrete foundation. A lower support is provided in the middle of the concrete foundation. The lower end of the main oil cylinder is rotatably set on the lower support, and an upper support is provided at the lower end of the unloading platform. The upper end of the main oil cylinder is rotatably set on the upper support. The unloading platform is driven by the main oil cylinder to flip and unload.

[0003] Most of the existing lower supports are realized by a double-ear seat in combination with a pin shaft. Since the working environment of the hydraulic unloader is not only relatively harsh, but also has to withstand heavy load impact, the pin shaft wears quickly and needs regular inspection and maintenance. However, since the double-ear seat adopts an one-piece molding design, it is difficult to disassemble the pin shaft, especially the pin shaft and the main cylinder or the pin shaft and the double-ear seat, which further increases the difficulty of disassembling the pin shaft under heavy load.

[0004] In order to solve the technical problem of the existing pin shaft being difficult to disassemble, our company has previously applied for a Chinese patent - a split support for the main cylinder of a hydraulic unloader (application number: 202323668394.1). The technical innovation lies in the realization of a split design, which is convenient for disassembly. Its structure is as follows Fig. 9 As shown. However, with the recent promotion and application, it is found that the above technology still has the technical problem of cumbersome operation, which is mainly reflected in the need to disassemble and assemble a large number of threaded connections. For example, a single ear seat needs more threaded connections, the connecting rib plate also needs multiple threaded connections, and the limit baffle and the limit block also need multiple threaded connections. Although there is no difficulty in disassembly and assembly, it seriously affects the disassembly and assembly efficiency, and then affects the maintenance efficiency. Therefore, it is necessary to further optimize the structure of the lower support based on the existing technology.

[0005] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility model content:

[0006] The utility model aims to solve the problems existing in the prior art and provides a lower support for the main oil cylinder of a car unloading machine, which has the advantages of reasonable structural design, convenient disassembly and assembly of the pin shaft, small follow-up wear of the pin shaft, less threaded connection, high maintenance efficiency, and extended service life.

[0007] The utility model achieves the above-mentioned purpose by adopting the following technical solutions:

[0008] The lower support of the main oil cylinder of the car unloading machine includes a base plate, two vertical plates are arranged at intervals on the base plate, a lower semicircular hole is arranged in the center of the upper end of the vertical plate, a copper sleeve gland is connected to the upper end of the vertical plate by threads, an upper semicircular hole is arranged in the center of the lower end of the copper sleeve gland, the upper semicircular hole and the lower semicircular hole cooperate to form a copper sleeve mounting hole, a copper sleeve is arranged in the copper sleeve mounting hole, limiting rings are respectively arranged at both ends of the side wall of the copper sleeve, pins are arranged on the two copper sleeves, the middle part of the pin is designed as a shoulder, and the lower end of the main oil cylinder is mounted on the shoulder.

[0009] A plurality of rib plates A are provided between the outer side of the vertical plate and the bottom plate.

[0010] Rib plates B are respectively provided between the two sides of the two vertical plates and between the bottom plate.

[0011] The copper sleeve gland is connected to the vertical plate by a plurality of screws. Threaded holes are respectively arranged on both sides of the vertical plate, and mounting holes are correspondingly arranged on the copper sleeve gland. The screws pass through washers, the mounting holes and the threaded holes for threaded connection.

[0012] The copper sleeve is a self-lubricating graphite copper sleeve.

[0013] The utility model adopts the above structure, which can bring the following beneficial effects:

[0014] The vertical plate is directly designed on the bottom plate and matched with the rib plate A and rib plate B, so that the lower half of the lower support is connected without threads and the overall molding design is realized. By designing a detachable copper sleeve gland at the upper end of the vertical plate, the copper sleeve is easy to disassemble and assemble. At the same time, a limit ring is designed on the copper sleeve, and the overall installation is firm and reliable, and easy to disassemble and assemble. On this basis, the pin is installed on the copper sleeve, and a shaft shoulder is designed on the pin for positioning, which not only realizes the positioning installation, but also the pin can move in the copper sleeve, reducing the wear of the pin and extending the service life. Description of the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the lower support of the main oil cylinder of the unloading machine of the utility model;

[0016] Figure 2 for Figure 1 AA section view;

[0017] Figure 3 It is a top view of the lower support of the main oil cylinder of the unloading machine of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the vertical plate and the bottom plate of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the copper sleeve gland of the utility model;

[0020] Figure 6This is a schematic diagram of the structure of the copper sleeve of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the pin shaft of the utility model;

[0022] Figure 8 This is a structural diagram of the main oil cylinder installed on the lower support of the main oil cylinder of the utility model unloading machine;

[0023] Fig. 9 It is a structural schematic diagram of the existing lower support;

[0024] In the figure, 1, base plate, 2, vertical plate, 3, lower semicircular hole, 4, copper sleeve pressure cover, 5, upper semicircular hole, 6, copper sleeve mounting hole, 7, copper sleeve, 8, limiting circular hole, 9, pin shaft, 10, shoulder, 11, rib plate A, 12, rib plate B, 13, screw, 14, threaded hole, 15, mounting hole, 16, washer, 17, main oil cylinder, 18, existing lower support. Specific implementation method:

[0025] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0028] Furthermore, the terms "upper", "lower", "A", "B", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the location of the indicated technical features.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "provided with", "set", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1-8As shown, the lower support of the main oil cylinder of the unloading machine includes a bottom plate 1, two vertical plates 2 are arranged on the bottom plate 1 at intervals, a lower semicircular hole 3 is arranged at the center of the upper end of the vertical plate 2, a copper sleeve gland 4 is connected to the upper end of the vertical plate 2 by threads, an upper semicircular hole 5 is arranged at the center of the lower end of the copper sleeve gland 4, the upper semicircular hole 5 cooperates with the lower semicircular hole 3 to form a copper sleeve mounting hole 6, a copper sleeve 7 is arranged in the copper sleeve mounting hole 6, and limiting rings 8 are respectively arranged at both ends of the side wall of the copper sleeve 7, and pins 9 are arranged on the two copper sleeves 7, and the middle part of the pins 9 is designed as a shaft shoulder 10, and the lower end of the main oil cylinder 17 is installed on the shaft shoulder 10. Compared with the existing lower support 18, by directly designing the vertical plate 2 on the bottom plate 1 and matching the rib plate A11 and the rib plate B12, the lower half of the lower support is realized without threaded connection, and the overall molding design (adopting one-piece processing or matching welding). By designing a detachable copper sleeve pressure cover 4 at the upper end of the vertical plate 2, the copper sleeve 7 can be easily disassembled and assembled. At the same time, a limiting ring 8 is designed on the copper sleeve 7. The overall installation is firm and reliable, and disassembly and assembly are convenient. On this basis, the pin 9 is installed on the copper sleeve 7. At the same time, a shoulder 10 is designed on the pin 9 for positioning. Not only can the positioning installation be achieved, but the pin 9 can also move in the copper sleeve 7, thereby reducing the wear of the pin 9 and extending the service life.

[0031] A plurality of ribs A11 are provided between the outer side of the vertical plate 2 and the bottom plate 1 to enhance the connection strength between the vertical plate 2 and the bottom plate 1 .

[0032] Rib plates B12 are provided on both sides between the two vertical plates 2 and the bottom plate 1. The connection strength between the vertical plates 2 and the bottom plate 1 is further enhanced, and the impact deformation resistance is improved. In actual application, attention should be paid to the height of the rib plate B12. If the height of the rib plate B12 is too high, it will interfere with the rotation of the main oil cylinder. Therefore, the height of the rib plate B12 needs to be made as small as possible.

[0033] The copper sleeve gland 4 is connected to the vertical plate 2 by a plurality of screws 13. The vertical plate 2 is provided with threaded holes 14 on both sides, and the corresponding copper sleeve gland 4 is provided with mounting holes 15. The screws 13 pass through the washers 16 and the mounting holes 15 and are threadedly connected with the threaded holes 14. A specific threaded connection structure is given. In addition, the number of screws on one side can be increased according to actual applications. For example, two screws can be set on one side to further enhance the connection strength between the copper sleeve gland 4 and the vertical plate 2.

[0034] The copper sleeve 7 is a self-lubricating graphite copper sleeve, which has good self-lubricating effect and mature technology.

[0035] The above specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0036] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. The lower support of the main oil cylinder of the unloading machine is characterized by: It includes a bottom plate, two vertical plates are arranged on the bottom plate at intervals, a lower semicircular hole is arranged at the center of the upper end of the vertical plate, a copper sleeve gland is connected to the upper end of the vertical plate by threads, an upper semicircular hole is arranged at the center of the lower end of the copper sleeve gland, the upper semicircular hole and the lower semicircular hole cooperate to form a copper sleeve mounting hole, a copper sleeve is arranged in the copper sleeve mounting hole, limiting rings are arranged at both ends of the side wall of the copper sleeve respectively, pins are arranged on the two copper sleeves, the middle part of the pins is designed to be a shoulder, and the lower end of the main oil cylinder is mounted on the shoulder.

2. The lower support of the main oil cylinder of the unloading machine according to claim 1 is characterized in that: A plurality of rib plates A are provided between the outer side of the vertical plate and the bottom plate.

3. The lower support of the main oil cylinder of the unloading machine according to claim 2 is characterized in that: Rib plates B are respectively provided between the two sides of the two vertical plates and between the bottom plate.

4. The lower support of the main oil cylinder of the unloading machine according to claim 1 or 3, characterized in that: The copper sleeve gland is connected to the vertical plate by a plurality of screws. Threaded holes are respectively arranged on both sides of the vertical plate, and mounting holes are correspondingly arranged on the copper sleeve gland. The screws pass through washers, the mounting holes and the threaded holes for threaded connection.

5. The lower support of the main oil cylinder of the unloading machine according to claim 4 is characterized in that: The copper sleeve is a self-lubricating graphite copper sleeve.

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