A fuel injection pump repair tool

Abstract

The utility model discloses an oil injection pump repair tool, including fixed base, lifting structure, positioning clamping structure and worm index structure. Fixed base top surface is equipped with riser pole, and the riser pole is slidably sleeved with lifting seat, and the lifting seat is equipped with positioning clamping table, and the clamping table bottom is connected by meshing with rotary damping cylinder, and the clamping table surface is equipped with adjustable lug assembly. The clamping table deflection is realized by the cooperation of worm drive and arc gear, and the arc gear is arranged on the lifting seat horizontal plane. The lug structure is formed by the cooperation of screw rod and sliding sleeve linkage adjustment, and can quickly realize the clamping or release of oil injection pump. The lifting seat realizes vertical height adjustment through meshing linear rack and climbing drive component. The utility model realizes three -axis direction's clamping adjustment operation, and improves the rotation stability and angle positioning precision through worm drive and damping brake structure, is suitable for the maintenance, detection of multiple model oil injection pump and the working condition such as.

Description

Technical Field

[0001] This utility model relates to the field of repair tooling technology, specifically to a fuel injection pump repair tooling. Background Technology

[0002] As a key component of diesel engines, the fuel injection pump requires specialized tooling for stable clamping and angle adjustment during maintenance, debugging, and fault detection. Traditional fuel injection pump repair tooling is mostly simple in structure and limited in function, mainly consisting of fixed platforms, manual clamps, or simple positioning plates, which only have basic clamping and fixing functions and usually cannot meet the needs of different models of fuel injection pumps or complex repair operations.

[0003] Existing fuel injection pump repair fixtures typically suffer from the following structural features and technical defects:

[0004] On the one hand, in terms of the height adjustment of the clamping device, most tooling lacks a lifting structure or uses a mechanical limit device to achieve limited position switching. This results in the need to frequently replace parts or use shims to level when facing workpieces with different geometric dimensions or different installation references. This not only affects the operating efficiency but also poses safety hazards.

[0005] On the other hand, in terms of adjusting the angle of the clamping table, traditional equipment mostly relies on a manually operated rotary table or screw locking structure. The rotation of the clamping table depends on manual rotation, resulting in poor positioning accuracy and lack of buffer damping. This can easily cause workpiece angle deviation or impact due to excessively fast instantaneous rotation, affecting maintenance accuracy and equipment lifespan.

[0006] In addition, the clamping structure in existing tooling is generally a one-way slider or a symmetrical tie rod structure, which does not have the ability to adjust in conjunction with the action. The adjustment process is cumbersome and it is difficult to achieve fast and high-precision clamping control. Especially when the workpiece shape is irregular or there are multiple clamping points, it cannot provide good clamping consistency.

[0007] In view of this, we have studied and improved the existing problems and provided a fuel injection pump repair tool to solve the current problems. The aim of this technology is to solve the problems and improve its practical value. Utility Model Content

[0008] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0009] Therefore, the technical solution adopted by this utility model is as follows: a fuel injection pump repair fixture, including a fixed base, a positioning clamp, and a worm gear indexing assembly. A support rod is fixedly installed on the top surface of the fixed base, and a lifting seat is slidably sleeved on the surface of the support rod. The positioning clamp is rotatably installed on the surface of the lifting seat, and the worm gear indexing assembly is fixedly installed on the surface of the lifting seat to drive the positioning clamp to perform deflection motion. The worm gear indexing assembly includes an arc-shaped toothed disc and a worm gear driver fixed to the surface of the lifting seat. There are two sets of arc-shaped toothed discs, and a cross platform is provided between the two arc-shaped toothed discs. A rotary damping cylinder and a toothed disc are rotatably installed on the surface of the cross platform. A toothed disc is fixedly installed on the bottom surface of the positioning clamp, and a rotary damping cylinder is fixedly installed on the surface of the cross platform. The shaft end of the rotary damping cylinder meshes with the surface of the toothed disc for transmission, and the output end of the worm gear driver meshes with the surface of the arc-shaped toothed disc for transmission. This structure realizes the rotational adjustment of the positioning clamp and improves the stability and accuracy of the clamp rotation through the damping structure.

[0010] In a preferred embodiment, the present invention can be further configured such that: two opposing clamping ears are slidably mounted on the surface of the positioning clamping platform for holding the fuel injection pump, and the clamping ears are arc-shaped.

[0011] Specifically, this structure can match the shape of the fuel injection pump to achieve stable envelope clamping, and has strong adaptability.

[0012] In a preferred embodiment, the present invention can be further configured as follows: a lead screw sleeve is fixedly installed on the bottom surface of the clamping ear, and threaded sleeve holes with opposite rotation directions are opened on the inner side of the two clamping ears; a lead screw is rotatably installed on the surface of the positioning clamping table, and two lead screw sleeves are threadedly connected to the surface of the lead screw.

[0013] Specifically, the two clamping lugs are clamped or released synchronously by controlling the single lead screw, so as to achieve fast and precise clamping and adjustment.

[0014] In a preferred embodiment, the present invention can be further configured as follows: the rotary damping cylinder includes a housing, a drum and a brake pad that slides against the surface of the drum. The drum is rotatably sleeved inside the housing, and the housing is provided with an elastic element connected to one side of the brake pad. The brake pad is disposed between the drum and the housing and can move radially to contact or disengage from the inner wall of the housing. The drum shaft end is provided with transmission teeth that mesh with the surface of the gear disc.

[0015] Specifically, this structure enables damping adjustment during the rotation of the clamping platform, effectively preventing angle drift and improving the positioning accuracy of the clamping platform.

[0016] In a preferred embodiment, the present invention can be further configured such that: the arc tooth disk is a semi-circular arc-shaped worm gear disk structure, and the arc tooth disk and the cross platform are arranged horizontally on the surface of the lifting seat.

[0017] Specifically, this structure facilitates worm gear meshing drive and smooth rotation of the clamping table, improving structural compactness and transmission efficiency.

[0018] In a preferred embodiment, the present invention can be further configured such that the worm drive includes a motor and a worm fixed to the output end of the motor, wherein the worm engages with the surface of the arc-tooth disk for transmission.

[0019] Specifically, the structure achieves precise angle control through motor drive, facilitating automated control and adjustment.

[0020] In a preferred embodiment, the present invention can be further configured as follows: a linear rack is provided on the surface of the fixed seat, and a climbing drive assembly is fixedly installed on the surface of the lifting seat. The climbing drive assembly includes a geared motor and a climbing tooth that is connected to the output end of the geared motor. The climbing tooth is rotatably installed on the inner side of the lifting seat and meshes with the surface of the linear rack for transmission.

[0021] Specifically, this structure enables the electric lifting function of the lifting seat, effectively simplifying manual operation and improving positioning efficiency.

[0022] In summary, this utility model provides a compact, easy-to-operate, accurately positioned, and angle-adjustable fuel injection pump repair fixture through the coordinated design of lifting structure, clamping structure, indexing structure, and damping structure. It is suitable for the inspection, repair, and adjustment of fuel injection pumps, significantly improving repair clamping efficiency and operational safety.

[0023] The beneficial effects achieved by this utility model are as follows:

[0024] 1. In this utility model, the vertical lifting adjustment is achieved by the linear rack of the fixed seat in conjunction with the climbing drive structure of the lifting seat; the positioning clamp can achieve deflection and rotation in the horizontal plane under the drive of the worm gear indexing assembly; the clamping ear achieves radial clamping or release through the lead screw linkage structure, thereby realizing displacement movement in the three-axis direction, so that the workpiece can be flexibly and accurately adjusted in position during maintenance or inspection, significantly improving the adaptability and operating efficiency of the tooling.

[0025] 2. In this utility model, a drive system is formed by the meshing of a worm gear driven by an electric motor and an arc-tooth disc. At the same time, through the cooperation of a rotary damping cylinder and the disc, an effective rotary damping effect is provided during the deflection of the clamping platform, thereby improving the buffering effect and stability of the terminal position of the clamping platform during rotation, significantly enhancing the positioning reliability of the fuel injection pump clamping position and the safety of maintenance operations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the positioning clamp and worm gear indexing assembly structure according to an embodiment of the present invention;

[0028] Figure 3This is a schematic diagram of the bottom structure of the positioning clamping platform according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the ear-clamping drive structure according to an embodiment of the present invention.

[0030] Figure label:

[0031] 100. Fixed base; 110. Upright pole; 120. Lifting base; 121. Climbing drive assembly;

[0032] 200. Positioning clamp; 210. Clamping lug; 220. Rotary damping cylinder; 211. Lead screw sleeve; 212. Lead screw; 221. Gear plate;

[0033] 300. Worm gear indexing assembly; 310. Arc gear disc; 320. Worm gear actuator. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0035] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0036] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a fuel injection pump repair fixture.

[0037] Combination Figures 1-4 As shown, the present invention provides a fuel injection pump repair fixture, the structure of which includes: a fixed base 100, a support rod 110, a lifting base 120, a climbing drive assembly 121, a positioning clamp 200, a clamp ear 210, a lead screw sleeve 211, a lead screw 212, a rotary damping cylinder 220, a gear plate 221, a worm gear indexing assembly 300, an arc gear plate 310, and a worm gear driver 320.

[0038] The fixed base 100 is the basic support platform of this tooling, and a linear rack is provided on it to realize the up and down movement of the lifting seat 120. The upright rod 110 is fixedly installed on the top surface of the fixed base 100 and serves as the guide rail support structure for the lifting seat 120.

[0039] The lifting seat 120 is sleeved on the outside of the upright rod 110 and can slide along its axial direction to adjust the height of the clamping fixture. The lower part of the lifting seat 120 is provided with a climbing drive assembly 121 that meshes with a linear rack on the fixed seat 100. This climbing drive assembly 121 includes a geared motor and climbing teeth that are drively connected to its output end. The climbing teeth are installed inside the lifting seat 120 and achieve lifting action by meshing with the linear rack, thereby driving the lifting seat 120 to move up and down along the upright rod 110 to complete the height adjustment function.

[0040] The positioning clamp 200 is rotatably mounted on the surface of the lifting seat 120. Its bottom surface is connected to the rotary damping cylinder 220 on the horizontal platform via a gear plate 221 to achieve stable rotational positioning. This rotational structure is driven by a worm gear indexing assembly 300, which includes two sets of arc-tooth discs 310 and a worm drive 320 fixedly mounted on the surface of the lifting seat 120. The worm drive 320 consists of a motor and a worm fixed to the motor output shaft. The worm meshes with the arc-tooth discs 310, driving the two arc-tooth discs 310 to rotate relative to each other, thus rotating the horizontal platform and causing the positioning clamp 200 to deflect.

[0041] A rotary damping cylinder 220 and a gear disc 221 are located at the center of the horizontal platform. The rotary damping cylinder 220 includes a housing, a rotating drum, and a brake pad. The rotating drum is rotatably fitted inside the housing, and the brake pad slides against the outer wall of the rotating drum. An elastic element is provided between the rotating drum and the housing, allowing the brake pad to move radially under elastic action, thereby contacting or disengaging from the inner wall of the housing to achieve damping braking. The shaft end of the rotating drum is provided with transmission teeth, which mesh with the gear disc 221 at the bottom of the positioning clamp 200. When the clamp rotates, the gear disc 221 drives the rotating drum to rotate, forming a rotational damping effect and improving the rotational stability of the clamp.

[0042] Two opposing clamping ears 210 are slidably mounted on the upper surface of the positioning clamping table 200. The clamping ears 210 are arc-shaped and used to clamp the fuel injection pump component to be repaired. A lead screw sleeve 211 is fixedly mounted on the bottom surface of the two clamping ears 210, and its inner side has threaded holes with opposite directions of rotation. A lead screw 212 is rotatably mounted on the positioning clamping table 200, passing through the two lead screw sleeves 211. When the lead screw 212 is rotated, the two lead screw sleeves 211 will move in opposite directions under the action of the threads, thereby causing the clamping ears 210 to clamp or loosen synchronously, achieving a quick clamping function.

[0043] In the operation of this invention, the lifting seat 120 is first controlled by the climbing drive assembly 121 to slide up and down on the upright rod 110, adjusting the positioning clamp 200 to a suitable height. Then, the fuel injection pump component is placed between the two clamping ears 210 of the positioning clamp 200, and the lead screw 212 is rotated, causing the lead screw sleeve 211 and the clamping ears 210 to clamp inward, thus fixing the fuel injection pump. Next, the worm gear drive 320 drives the arc gear disk 310 to rotate, which in turn drives the horizontal platform to rotate, adjusting the deflection angle of the fuel injection pump. The meshing relationship between the gear disk 221 and the rotary damping cylinder 220 provides necessary buffering and positioning during rotation, ensuring smooth and reliable deflection movement.

[0044] This fuel injection pump repair fixture has a reasonable structure and is easy to operate. It can achieve multi-angle clamping, reliable fixation and height adjustment during the fuel injection pump repair process. It is especially suitable for auxiliary operation in repair workshops or assembly lines, improving the versatility of the fixture and the efficiency of operation.

[0045] Working principle and usage process of this utility model:

[0046] This utility model's fuel injection pump repair fixture is based on three core functions: column lifting, positioning and clamping, and angle adjustment. It enables the rapid clamping, rotation, and fixation of the fuel injection pump, assisting in its testing, repair, or debugging operations.

[0047] Column lifting control: The linear rack on the fixed seat 100 meshes with the crawling teeth on the inner side of the lifting seat 120. The crawling teeth are driven to rotate by the reduction motor, thereby driving the lifting seat 120 to move up and down along the upright rod 110, so as to adjust the height of the clamping platform.

[0048] Clamping and fixing mechanism: Two clamping lugs 210 are threaded together with the lead screw 212, and can move inward or outward simultaneously when the lead screw 212 is rotated, thereby clamping or releasing the fuel injection pump workpiece. The lead screw sleeve 211 and the positioning clamp 200 cooperate to ensure stable and reliable clamping.

[0049] Deflection adjustment mechanism: The worm output by the worm drive 320 meshes with the arc tooth disk 310, driving the arc tooth disk to rotate and realize the rotation of the clamping table; a tooth disk 221 is installed at the bottom of the clamping table, which is linked with the rotation damping cylinder 220 on the horizontal platform, so that the clamping table has buffer damping characteristics during the deflection adjustment process, ensuring smooth rotation and accurate positioning.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A tooling for overhauling an injection pump, characterized in that, include: The system comprises a fixed base (100), a positioning clamp (200), and a worm gear indexing assembly (300). A support rod (110) is fixedly mounted on the top surface of the fixed base (100), and a lifting seat (120) is slidably sleeved on the surface of the support rod (110). The positioning clamp (200) is rotatably mounted on the surface of the lifting seat (120). The worm gear indexing assembly (300) is fixedly mounted on the surface of the lifting seat (120) and is used to drive the positioning clamp (200) to deflect. The worm gear indexing assembly (300) includes an arc-tooth disk (310) and a component fixed to the lifting seat (120). The worm drive (320) on the surface of the worm gear drive (320) has two sets of arc toothed discs (310) with a cross platform between the two arc toothed discs (310), and a rotary damping cylinder (220) is fixedly installed on the surface of the cross platform. A toothed disc (221) is fixedly installed on the bottom surface of the positioning clamp (200). The shaft end of the rotary damping cylinder (220) meshes with the surface of the toothed disc (221) for transmission. The rotary damping cylinder (220) and the toothed disc (221) are rotatably installed on the surface of the cross platform. The output end of the worm drive (320) meshes with the surface of the arc toothed disc (310) for transmission.

2. The fuel injection pump repair tooling according to claim 1, characterized in that, The positioning clamp (200) has two oppositely arranged clamping ears (210) slidably mounted on its surface for holding the fuel injection pump. The clamping ears (210) are arc-shaped.

3. The fuel injection pump repair tooling according to claim 2, characterized in that, The bottom surface of the clamp (210) is fixedly installed with a screw sleeve (211), and the inner side of the two clamps (210) is provided with threaded sleeve holes with opposite rotation directions. The positioning clamp (200) is rotatably installed with a screw (212), and the two screw sleeves (211) are threadedly sleeved on the surface of the screw (212).

4. The fuel injection pump repair fixture according to claim 1, characterized in that, The rotary damping cylinder (220) includes a housing, a drum, and a brake pad that slides against the surface of the drum. The drum is rotatably sleeved inside the housing, and the housing is provided with an elastic element connected to one side of the brake pad. The brake pad is disposed between the drum and the housing and can move radially to contact or disengage from the inner wall of the housing. The drum shaft end is provided with transmission teeth that mesh with the surface of the gear disc (221).

5. The fuel injection pump repair tooling according to claim 1, characterized in that, The arc-shaped toothed disc (310) is a semi-circular arc-shaped worm gear disc structure. The arc-shaped toothed disc (310) and the cross platform are arranged in a horizontal axial direction on the surface of the lifting seat (120).

6. The fuel injection pump repair tooling according to claim 1, characterized in that, The worm drive (320) includes a motor and a worm fixed to the output end of the motor, and the worm engages with the surface of the arc tooth disk (310) for transmission.

7. The fuel injection pump repair fixture according to claim 1, characterized in that, The fixed seat (100) has a linear rack on its surface, and the lifting seat (120) has a climbing drive assembly (121) fixedly installed on its surface. The climbing drive assembly (121) includes a geared motor and a crawling tooth that is connected to the output end of the geared motor. The crawling tooth is rotatably installed on the inner side of the lifting seat (120) and meshes with the surface of the linear rack for transmission.

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