Gear pump support assembly for sanitation truck

Abstract

The invention is applicable to the technical field of vehicle accessories, and provides a gear pump bracket assembly for a sanitation truck, which comprises a vehicle-mounted gear pump and a gear pump mounting and fixing bracket, the gear pump mounting and fixing bracket comprises a bracket mounting plate, a pump body mounting plate and a pump shaft supporting plate, and the pump shaft supporting plate is provided with a pump shaft supporting seat through a supporting seat connecting mechanism; the vehicle-mounted gear pump comprises a pump body base and a power input shaft, the pump body base is connected with a pump body mounting plate through a pump body connecting mechanism, and the pump body connecting mechanism comprises an elastic buffering sleeve which can buffer vibration transmission between the pump body base and the pump body mounting plate, so that the influence of vibration of a vehicle on the vehicle-mounted gear pump is reduced, and the vehicle-mounted gear pump is more stable. The supporting seat connecting mechanism comprises an elastic buffering cushion block and an elastic connecting sleeve, vibration transmission between the pump shaft supporting plate and the pump shaft supporting seat can be buffered, and therefore the pump shaft supporting seat can support the power input shaft and improve the bending problem of the power output shaft, and meanwhile the pump shaft supporting seat can be used for supporting the power output shaft. And the influence of vibration at other positions on the operation of the power input shaft can be avoided.

Description

Technical Field

[0001] The invention is applicable to the technical field of vehicle accessories and provides a gear pump bracket assembly for a sanitation vehicle. Background Art

[0002] A sanitation vehicle is a special vehicle used for city appearance tidying and cleaning. Sanitation vehicles are generally built by adding various types of sanitation equipment to the original truck frame, such as vacuum cleaners, flushers, rotary brooms, etc., and the control of these devices mostly relies on hydraulic system control, and the transmission of hydraulic oil in the on-board hydraulic system is mainly realized by the hydraulic pump, and the hydraulic pump is driven by the power output of the vehicle engine. In the normal structure of a sanitation vehicle, the hydraulic pump is directly fixed to the frame through a bracket, and then the power input shaft of the hydraulic pump is connected to the power output shaft of the vehicle through a coupling or a gear set and other structures, and is driven by the vehicle's engine. During the operation and driving of the sanitation vehicle, there will be a lot of vibrations, and the hydraulic pump is driven by Because it needs to be set close to the power output shaft, it is more affected by vibration. At the same time, the gear pump itself will also generate vibration when working. These operating vibrations will cause the fixing bolts of the hydraulic pump to loosen. The hydraulic pump will run without sufficient fixation for a long time, which will lead to increased component wear of the hydraulic pump. At the same time, since there are many components in the sanitation vehicle and the body space is limited, the various components cannot be installed with the optimal layout plan. For example, the hydraulic pump of a sanitation vehicle of our company is placed far away from the power output shaft of the vehicle. The connection between the two can only be ensured by lengthening the power input shaft of the hydraulic pump. The increase in the length of the power input shaft can easily lead to bending and deformation of the power input shaft after long-term use, resulting in reduced power transmission efficiency and abnormal equipment operation. Summary of the invention

[0003] To this end, the present invention provides a gear pump bracket assembly for a sanitation vehicle, which utilizes multiple pump body connecting mechanisms with elastic buffer sleeves to install and fix the gear pump body, and uses elastic buffer sleeves between the pump body connecting bolts and the mounting holes to achieve elastic buffering, thereby reducing the influence of vehicle body vibration and the working vibration of the gear pump itself, avoiding the loosening of the pump body connecting bolts after long-term use, and reducing the aggravated wear of parts of the gear pump due to loose installation. At the same time, a pump shaft support seat is arranged on one side of the pump body mounting plate, and bearings are used to provide slewing support for the power input shaft. At the same time, the pump shaft support seat is installed on one side of the pump body mounting plate through multiple support seat connecting mechanisms provided with elastic connecting sleeves, which also provide elastic buffering for the pump shaft support seat. While providing support for the power input shaft, the operation of the power input shaft will not be affected by the vibration of the frame and the vibration of the gear pump operation.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a gear pump bracket assembly for a sanitation vehicle, comprising:

[0005] The gear pump mounting bracket comprises a bracket mounting plate and a pump body mounting plate which are fixedly connected, and the bracket mounting plate is provided with a bracket mounting hole for being fixedly connected to the frame of the sanitation vehicle;

[0006] A vehicle-mounted gear pump comprises a gear pump body, a pump body base and a power input shaft, wherein the pump body base is connected to a pump body mounting plate by at least three pump body connecting mechanisms, wherein the pump body connecting mechanisms comprise an elastic buffer sleeve, a pump body connecting bolt and a pump body fastening nut, wherein the elastic buffer sleeve is made of an elastic columnar material, and a buffer sleeve through hole is arranged between the upper and lower end surfaces of the elastic buffer sleeve, an upper limit flange is arranged on the outer side of the upper end portion of the elastic buffer sleeve, an intermediate limit flange is arranged on the outer side of the middle position of the elastic buffer sleeve, and the shaft section of the elastic buffer sleeve between the upper limit flange and the intermediate limit flange is called a pump seat buffer section, and the elastic The axial section of the buffer sleeve located between the middle limiting flange and the lower end surface of the elastic buffer sleeve is called the bracket buffer section. The pump body mounting plate is provided with a plurality of pump body mounting holes, and the pump body base is provided with a plurality of pump body limiting slots which are matched with the pump body mounting holes one by one. The elastic buffer sleeve passes through the pump body limiting slot and the pump body mounting hole in sequence, and the pump seat buffer section is arranged in the pump body limiting slot, and the bracket buffer section is arranged in the pump body mounting hole. The upper and lower end surfaces of the middle limiting flange are respectively abutted against the lower end surface of the pump body base and the upper end surface of the pump body mounting plate, and one end of the pump body connecting bolt passes through the through hole of the buffer sleeve and is threadedly screwed with the pump body fastening nut.

[0007] Furthermore, the pump body connecting mechanism also includes an in-hole bushing, which is arranged between the inner wall of the buffer sleeve through hole and the pump body connecting bolt, the outer wall of the in-hole bushing is in contact with the inner wall of the buffer sleeve through hole, the upper end surface of the in-hole bushing does not exceed the upper end surface of the elastic buffer sleeve, and the lower end surface of the in-hole bushing does not exceed the lower end surface of the elastic buffer sleeve.

[0008] Furthermore, the bracket mounting plate is provided with a transmission shaft avoidance hole for the chassis transmission shaft to pass through, an elastic support sleeve is provided in the transmission shaft avoidance hole, and the chassis transmission shaft and the elastic support sleeve are rotatably connected via at least one transmission shaft support bearing.

[0009] Furthermore, a pump shaft support plate is fixedly connected to one side of the pump body mounting plate, a pump shaft support seat is arranged at the upper end of the pump shaft support plate, and a partial shaft section of the power input shaft is rotatably arranged on the pump shaft support seat through an input shaft support bearing.

[0010] Furthermore, the pump shaft support plate and the pump shaft support seat are connected by at least three support seat connecting mechanisms, and the support seat connecting mechanisms include an elastic connecting sleeve, an elastic buffer pad, a support seat connecting bolt and a support seat fastening nut. The elastic buffer pad is sleeved on the outside of the elastic connecting sleeve, and the pump shaft support seat is provided with a plurality of support seat connecting holes, and the pump shaft support plate is provided with a plurality of support seat mounting holes that are matched one by one with the support seat connecting holes. Both ends of the elastic connecting sleeve are respectively inserted into the support seat connecting hole and the support seat mounting hole, and the upper end surface of the elastic buffer pad abuts against the lower end surface of the pump shaft support seat, and the lower end surface of the elastic buffer pad abuts against the upper end surface of the pump shaft support plate, and one end of the support seat connecting bolt passes through the elastic connecting sleeve and is threadedly screwed with the support seat fastening nut.

[0011] Furthermore, a buffer spring is fixedly arranged inside the elastic buffer pad.

[0012] In another embodiment, a support bearing buffer pad is provided between the pump shaft support seat and the outer side surface of the input shaft support bearing, the support bearing buffer pad is made of elastic material, and the pump shaft support plate and the pump shaft support seat are fixedly connected by a plurality of bolt fastening mechanisms.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. An elastic buffer sleeve made of elastic materials such as rubber is added to the pump body connection mechanism, and the elastic buffer sleeve is used to fill the mounting hole of the pump body base. The elastic buffer sleeve provides an elastic buffer between the pump body connection bolts and the inner wall of the mounting hole, which can reduce the loosening of the pump body connection bolts caused by vibration. At the same time, the middle limit flange of the elastic buffer sleeve can form an elastic buffer pad between the lower end surface of the pump body base and the upper end surface of the pump body mounting plate, isolating the pump body base from the pump body mounting plate to avoid contact between the two, and further reducing the transmission of vibration;

[0015] 2. A pump shaft support seat provided with a bearing is used to provide shaft support for the intermediate shaft section of the power input shaft, thereby reducing the possibility of bending of the power input shaft after long-term operation and improving its service life and stability. At the same time, the pump shaft support seat is installed on the pump shaft support plate through several support seat connection mechanisms with elastic connecting sleeves and elastic buffer pads. The gap between the support seat connecting bolt and the mounting hole is filled by the elastic connecting sleeve, so that there is a buffer between the support seat connecting bolt and the mounting hole. At the same time, the elastic buffer pad is used to separate the pump shaft support seat and the pump shaft support plate, so that there are two buffers between the pump shaft support seat and the entire bracket. In this case, the pump shaft support seat can provide support for the power input shaft and improve the bending problem of the power output shaft. At the same time, it can avoid the hard connection between the pump shaft support seat and the pump body mounting plate, resulting in the vibration of the frame and the vibration of the gear pump operation affecting the operation of the power input shaft;

[0016] 3. A transmission shaft support bearing is arranged in the transmission shaft avoidance hole provided on the bracket mounting plate for the chassis transmission shaft to pass through to provide a support for the chassis transmission shaft. At the same time, an elastic support sleeve is arranged between the transmission shaft support bearing and the inner wall of the transmission shaft avoidance hole to reduce the vibration of the chassis transmission shaft during operation and affect the gear pump installation fixing bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure between a gear pump bracket assembly for a sanitation vehicle and a sanitation vehicle frame mentioned in Example 1;

[0018] Figure 2 for Figure 1 A schematic structural diagram of a gear pump bracket assembly for a sanitation vehicle in another direction;

[0019] Figure 3 A cross-sectional view of an assembly structure in which a pump body base and a pump body mounting plate mentioned in the present invention are connected via a pump body connecting mechanism;

[0020] Figure 4 It is a schematic diagram of the structural decomposition of the pump body connection mechanism mentioned in the present invention;

[0021] Figure 5 for Figure 4 A schematic diagram of the structure of the elastic buffer sleeve in the pump body connection mechanism mentioned in the figure;

[0022] Figure 6 A cross-sectional view of the assembly structure in which the pump shaft support plate and the pump shaft support seat are connected via the support seat connection mechanism in Example 1;

[0023] Figure 7 for Figure 6 A local enlarged schematic diagram of the middle A;

[0024] Figure 8 It is a schematic diagram of the structural decomposition of the support seat connection mechanism in Example 1;

[0025] Fig. 9 It is a schematic diagram of the assembly structure between the bracket mounting plate and the chassis transmission shaft mentioned in the present invention;

[0026] Fig.10 This is a schematic structural diagram of a gear pump bracket assembly for a sanitation vehicle in Example 2.

[0027] In the figure:

[0028] 100. Gear pump mounting bracket, 110. Bracket mounting plate, 120. Pump body mounting plate, 130. Pump shaft support plate, 140. Pump shaft support seat, 150. Input shaft support bearing, 160. Drive shaft avoidance hole, 170. Elastic support sleeve, 180. Drive shaft support bearing, 190. Support bearing buffer pad;

[0029] 200, vehicle-mounted gear pump, 210, gear pump body, 220, pump body base, 230, power input shaft;

[0030] 300, chassis drive shaft;

[0031] 400, sanitation vehicle frame;

[0032] 500, pump body connecting mechanism, 510, elastic buffer sleeve, 511, upper limit flange, 512, pump seat buffer section, 513, middle limit flange, 514, bracket buffer section, 515, buffer sleeve through hole, 520, pump body connecting bolt, 530, bushing in the hole, 540, pump body fastening nut;

[0033] 600. Support seat connecting mechanism, 610. Elastic connecting sleeve, 620. Elastic buffer pad, 630. Support seat connecting bolt, 640. Support seat fastening nut, 650. Buffer spring. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] Example 1, refer to the attached Figure 1 , Attachment Figure 2 The present invention provides a gear pump bracket assembly for a sanitation vehicle, including a vehicle-mounted gear pump 200 and a gear pump mounting and fixing bracket 100 for mounting the vehicle-mounted gear pump 200 on a sanitation vehicle frame 400;

[0036] The gear pump mounting bracket 100 includes a bracket mounting plate 110 and a pump body mounting plate 120 that are fixedly connected. A pump shaft support plate 130 is also fixedly arranged on one side of the pump body mounting plate 120. A pump shaft support seat 140 is arranged on the upper end of the pump shaft support plate 130, wherein the bracket mounting plate 110 is provided with a bracket mounting hole for fixed connection with the sanitation vehicle frame 400, and the bracket mounting plate 110 is also provided with a transmission shaft avoidance hole 160 for the chassis transmission shaft 300 to pass through. This structure is mainly because the vehicle-mounted gear pump 200 needs to be arranged close to the chassis transmission shaft 300, so in order to ensure structural stability, it can only be designed to allow the chassis transmission shaft 300 to pass through the bracket mounting plate 110, as shown in the attached Fig. 9As shown, an elastic support sleeve 170 is arranged in the transmission shaft avoidance hole 160, and the chassis transmission shaft 300 and the elastic support sleeve 170 are rotatably connected through at least one transmission shaft support bearing 180. In the actual application of this embodiment, two transmission shaft support bearings 180 are adopted to further improve the support stability. The transmission shaft support bearings 180 can form effective support for the chassis transmission shaft 300 and improve the running stability. The elastic support sleeve 170 is made of elastic materials such as rubber. The elastic support sleeve 170 is arranged between the transmission shaft support bearing 180 and the transmission shaft avoidance hole 160, which can effectively buffer the running vibration of the chassis transmission shaft 300 and prevent the running vibration of the chassis transmission shaft 300 from being transmitted to the pump body mounting plate 120 through the transmission shaft support bearings 180.

[0037] The vehicle-mounted gear pump 200 includes a gear pump body 210, a pump body base 220 and a power input shaft 230. The pump body base 220 is connected to the pump body mounting plate 120 via at least three pump body connecting mechanisms 500. In this embodiment, four pump body connecting mechanisms 500 are used. At the same time, the four pump body connecting mechanisms 500 are arranged in a rectangular array. The rectangular array arrangement makes the horizontal limit more stable. Figure 3 ~Attached Figure 5As shown, the pump body connection mechanism 500 includes an elastic buffer sleeve 510, a pump body connection bolt 520 and a pump body fastening nut 540, the elastic buffer sleeve 510 is made of an elastic columnar material, and a buffer sleeve through hole 515 is arranged between the upper and lower end surfaces of the elastic buffer sleeve 510, an upper limit flange 511 is arranged on the outer side of the upper end of the elastic buffer sleeve 510, and an intermediate limit flange 513 is arranged on the outer side of the middle position of the elastic buffer sleeve 510. The shaft section of the elastic buffer sleeve 510 located between the upper limit flange 511 and the intermediate limit flange 513 is called a pump seat buffer section 512, and the elastic buffer sleeve 510 is located between the intermediate limit flange 513 and the elastic buffer sleeve The shaft section between the lower end faces of 510 is called the bracket buffer section 514, the pump body mounting plate 120 is provided with four pump body mounting holes, the pump body base 220 is provided with four pump body limiting slots that are matched one by one with the pump body mounting holes, the pump body limiting slots are U-shaped slots, the elastic buffer sleeve 510 passes through the pump body limiting slots and the pump body mounting holes in sequence, and the pump seat buffer section 512 is inserted into the pump body limiting slot from one side of the U-shaped slot opening of the pump body limiting slot. At the same time, the four pump body limiting slots are symmetrically arranged in pairs, so that the notches of the two pump body limiting slots in the same group are arranged back to back, so that the pump body connecting mechanism 500 installed with the two pump body limiting slots in the same group can connect the pump body base 2 20 is limited between the two pump body connecting mechanisms 500, and the upper limit flange 511 and the middle limit flange 513 just fit with the upper and lower end surfaces of the pump body limit slot, so that the pump seat buffer section 512 will be clamped in the pump body limit slot, which is convenient for positioning and installation, and the bracket buffer section 514 is inserted into the pump body mounting hole, thus completing the installation and positioning between the pump body base 220 and the pump body mounting plate 120. At this time, the lower end surface of the middle limit flange 513 abuts against the upper end surface of the pump body mounting plate 120, so that the middle limit flange 513 can be used as a spacer between the lower end surface of the pump body base 220 and the upper end surface of the pump body mounting plate 120. An elastic buffer pad isolates the pump body base 220 from the pump body mounting plate 120 to avoid contact between the two, further reducing the transmission of vibration. Finally, one end of the pump body connecting bolt 520 passes through the buffer sleeve through hole 515 and is screwed with the pump body fastening nut 540. In this way, the pump body base 220 and the pump body mounting plate 120 can be connected together through the pump body connecting mechanism 500. When the sanitation vehicle is running, the elastic buffer sleeve 510 can absorb and buffer a large amount of vibration, avoiding the accelerated wear of parts caused by the vibration of the vehicle-mounted gear pump 200, and at the same time, it can also alleviate the loosening of the pump body connecting bolt 520 and the pump body fastening nut 540 caused by the vibration.

[0038] In a more optimized solution, the above-mentioned pump body connecting mechanism 500 also includes an in-hole bushing 530, which is arranged between the inner wall of the buffer sleeve through hole 515 and the pump body connecting bolt 520, and the outer wall of the in-hole bushing 530 is in contact with the inner wall of the buffer sleeve through hole 515. The upper end surface of the in-hole bushing 530 does not exceed the upper end surface of the elastic buffer sleeve 510, and the lower end surface of the in-hole bushing 530 does not exceed the lower end surface of the elastic buffer sleeve 510. The in-hole bushing 530 is made of hard metal material or hard plastic, and its function is to enhance the vertical supporting force of the elastic buffer sleeve 510 and prevent the problem of insufficient installation limit caused by the elastic buffer sleeve 510 being too soft.

[0039] On the other hand, part of the shaft section of the power input shaft 230 is rotatably set on the pump shaft support seat 140 through the input shaft support bearing 150. Through the input shaft support bearing 150, the pump shaft support seat 140 provides a stable shaft support for the intermediate shaft section of the power input shaft 230, thereby reducing the possibility of bending of the power input shaft 230 after long-term operation and improving its service life and stability. The pump shaft support plate 130 and the pump shaft support seat 140 are connected by at least three support seat connecting mechanisms 600. In this embodiment, four support seat connecting mechanisms 600 are adopted. At the same time, the four support seat connecting mechanisms 600 are arranged in a rectangular array. The rectangular array arrangement makes the horizontal limit more stable, as shown in the attached figure. Figure 6 ~Attached Figure 8As shown, the support seat connection mechanism 600 includes an elastic connection sleeve 610, an elastic buffer pad 620, a support seat connection bolt 630 and a support seat fastening nut 640. The elastic buffer pad 620 is sleeved on the outside of the elastic connection sleeve 610, and a buffer spring 650 is fixedly arranged inside the elastic buffer pad 620. During production, this structure is produced by placing the buffer spring 650 into a mold and then injecting molten rubber material into the mold cavity, so that the buffer spring 650 can be fixed in the elastic buffer pad 620. The role of adding the buffer spring 650 is mainly to enhance the vertical supporting force of the elastic buffer pad 620 to prevent the elastic buffer pad 620 from being too soft and insufficiently supporting the pump shaft support seat 140, thereby affecting the operation of the power input shaft 230. The pump shaft support seat 140 is provided with four support seat connection holes, and the pump shaft support plate 130 is provided with four support seat mounting holes that are matched one by one with the support seat connection holes. The two ends of the elastic connection sleeve 610 are respectively inserted into the support The pump shaft support plate 130 and the pump shaft support seat 140 are pre-installed and positioned in the seat connection hole and the support seat installation hole through the elastic connecting sleeve 610. At the same time, the upper end surface of the elastic buffer pad 620 abuts against the lower end surface of the pump shaft support seat 140, and the lower end surface of the elastic buffer pad 620 abuts against the upper end surface of the pump shaft support plate 130. The elastic buffer pad 620 is used to separate the pump shaft support seat 140 and the pump shaft support plate 130. The elastic buffer pad 620 can absorb and buffer part of the pump shaft. The vibration is transmitted between the support plate 130 and the pump shaft support seat 140. In this case, the pump shaft support seat 140 can provide support for the power input shaft 230 and improve the bending problem of the power output shaft. At the same time, it can avoid the hard connection between the pump shaft support seat 140 and the pump body mounting plate 120, which causes the frame vibration and the gear pump operation vibration to affect the operation of the power input shaft 230. One end of the support seat connecting bolt 630 passes through the elastic connecting sleeve 610 and is threadedly connected with the support seat fastening nut 640.

[0040] Example 2, refer to the attached Fig.10As shown, on the basis of Example 1, the pump shaft support plate 130 and the pump shaft support seat 140 in Example 2 are not connected by a complex support seat connection mechanism 600, but are fixedly connected by several common bolt fastening mechanisms. However, in this embodiment, a support bearing buffer pad 190 is arranged between the pump shaft support seat 140 and the outer side surface of the input shaft support bearing 150. The support bearing buffer pad 190 is also made of elastic materials such as rubber, and can form a buffer between the pump shaft support seat 140 and the power input shaft 230, which can also reduce the impact of vibration on the power input shaft 230. At the same time, compared with the structure in Example 1, the structure of Example 2 is simpler and the cost is lower. However, at the same time, Example 2 only has a good buffering effect on the vibration from the power input shaft 230 itself, and does not have a good isolation effect on the vibration from other structures. The bolt fastening mechanism between the pump shaft support plate 130 and the pump shaft support seat 140 still has the risk of loosening.

[0041] Whether it is Example 1 or Example 2, the purpose of its structural design is to isolate and buffer the vibration transmission between the operating components, thereby reducing the impact of vibration on the components and avoiding loosening of the connections between the components. At the same time, while providing sufficient support for the components, it does not affect the operation of the components. In this way, the operating life and operating stability of the vehicle-mounted gear pump 200 are ultimately improved.

[0042] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0043] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention by using the above technical solutions or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A gear pump bracket assembly for a sanitation vehicle, characterized in that: include: A gear pump mounting bracket (100) comprises a bracket mounting plate (110) and a pump body mounting plate (120) which are fixedly connected, wherein the bracket mounting plate (110) is provided with a bracket mounting hole for being fixedly connected to a sanitation vehicle frame (400); A vehicle-mounted gear pump (200) comprises a gear pump body (210), a pump body base (220) and a power input shaft (230); the pump body base (220) is connected to a pump body mounting plate (120) via at least three pump body connection mechanisms (500); the pump body connection mechanism (500) comprises an elastic buffer sleeve (510), a pump body connection bolt (520) and a pump body fastening nut (540); the elastic buffer sleeve (510) is made of an elastic columnar material; a buffer sleeve through hole (515) is provided between the upper and lower end surfaces of the elastic buffer sleeve (510); an upper limit flange (511) is provided on the outer side of the upper end portion of the elastic buffer sleeve (510); an intermediate limit flange (513) is provided on the outer side of the middle position of the elastic buffer sleeve (510); the elastic buffer sleeve (510) is located at the shaft section between the upper limit flange (511) and the intermediate limit flange (513). The pump seat buffer section (512) is called the pump seat buffer section (512). The axial section of the elastic buffer sleeve (510) located between the middle limiting flange (513) and the lower end surface of the elastic buffer sleeve (510) is called the bracket buffer section (514). The pump body mounting plate (120) is provided with a plurality of pump body mounting holes. The pump body base (220) is provided with a plurality of pump body limiting slots that are matched with the pump body mounting holes one by one. The elastic buffer sleeve (510) passes through the pump body limiting slot and the pump body mounting hole in sequence. The pump seat buffer section (512) is arranged in the pump body limiting slot. The bracket buffer section (514) is arranged in the pump body mounting hole. The upper and lower end surfaces of the middle limiting flange (513) are respectively abutted against the lower end surface of the pump body base (220) and the upper end surface of the pump body mounting plate (120). One end of the pump body connecting bolt (520) passes through the buffer sleeve through hole (515) and is screwed with the pump body fastening nut (540).

2. The gear pump bracket assembly for a sanitation vehicle according to claim 1, characterized in that: The pump body connecting mechanism (500) further comprises an inner sleeve (530) which is arranged between the inner wall of the buffer sleeve through hole (515) and the pump body connecting bolt (520); the outer wall of the inner sleeve (530) fits with the inner wall of the buffer sleeve through hole (515); the upper end surface of the inner sleeve (530) does not exceed the upper end surface of the elastic buffer sleeve (510); and the lower end surface of the inner sleeve (530) does not exceed the lower end surface of the elastic buffer sleeve (510).

3. The gear pump bracket assembly for a sanitation vehicle according to claim 1, characterized in that: The bracket mounting plate (110) is provided with a transmission shaft avoidance hole (160) for the chassis transmission shaft (300) to pass through, an elastic support sleeve (170) is provided in the transmission shaft avoidance hole (160), and the chassis transmission shaft (300) and the elastic support sleeve (170) are rotatably connected via at least one transmission shaft support bearing (180).

4. The gear pump bracket assembly for a sanitation vehicle according to claim 1, characterized in that: A pump shaft support plate (130) is fixedly connected to one side of the pump body mounting plate (120), a pump shaft support seat (140) is arranged at the upper end of the pump shaft support plate (130), and a partial shaft section of the power input shaft (230) is rotatably arranged on the pump shaft support seat (140) via an input shaft support bearing (150).

5. The gear pump bracket assembly for a sanitation vehicle according to claim 4, characterized in that: The input shaft support bearing (150), the pump shaft support plate (130) and the pump shaft support seat (140) are connected via at least three support seat connection mechanisms (600), wherein the support seat connection mechanism (600) comprises an elastic connection sleeve (610), an elastic buffer pad (620), a support seat connection bolt (630) and a support seat fastening nut (640), wherein the elastic buffer pad (620) is sleeved on the outside of the elastic connection sleeve (610), and the pump shaft support seat (140) is provided with a plurality of support seat connection holes, wherein the pump shaft The support plate (130) is provided with a plurality of support seat mounting holes which are matched with the support seat connecting holes one by one, and the two ends of the elastic connecting sleeve (610) are respectively inserted into the support seat connecting hole and the support seat mounting hole, and the upper end surface of the elastic buffer pad (620) abuts against the lower end surface of the pump shaft support seat (140), and the lower end surface of the elastic buffer pad (620) abuts against the upper end surface of the pump shaft support plate (130), and one end of the support seat connecting bolt (630) passes through the elastic connecting sleeve (610) and is screwed with the support seat fastening nut (640) through a thread.

6. The gear pump bracket assembly for a sanitation vehicle according to claim 5, characterized in that: A buffer spring (650) is fixedly arranged inside the elastic buffer pad (620).

7. The gear pump bracket assembly for a sanitation vehicle according to claim 4, characterized in that: A support bearing buffer pad (190) is arranged between the pump shaft support seat (140) and the outer side surface of the input shaft support bearing (150); the support bearing buffer pad (190) is made of elastic material; and the pump shaft support plate (130) and the pump shaft support seat (140) are fixedly connected by a plurality of bolt fastening mechanisms.

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