Bracket bushing assembly jig for exhaust and noise reduction system of commercial truck

Abstract

The utility model relates to a business truck exhaust silencing system support lining assembling jig which comprises a bottom plate arranged below a pressing head of oil pressure equipment, one end of the top face of the bottom plate is provided with a positioning assembly located under the pressing head, and the other end of the top face of the bottom plate is provided with a supporting assembly. The positioning assembly comprises a positioning sleeve which is vertically fixed to the bottom plate and used for supporting the lower end face of a lining hole of a workpiece, a workpiece positioning shaft facilitating sleeving of the lining hole of the workpiece is slidably connected into the positioning sleeve in the vertical direction, and a lining positioning shaft facilitating sleeving of a lining is coaxially arranged at the top of the workpiece positioning shaft. The tool is simple in structure, convenient to operate and capable of effectively positioning the workpiece and the bushing, so that the workpiece and the bushing can be quickly and accurately positioned, assembly damage of the workpiece and the bushing caused by inclination of the bushing is prevented, and failure cost is reduced.

Description

Technical Field

[0001] The utility model relates to a jig for assembling a bushing of an exhaust silencing system bracket of a commercial truck. Background Art

[0002] When assembling the bushing of the exhaust silencing system bracket of a commercial truck, the bushing is placed above the bushing hole, and the bushing is pressed into the bushing hole by a hydraulic device. However, during the assembly process, if the bushing and the bushing hole are placed obliquely or the positions are not aligned, it is easy to damage the bushing and the workpiece when the bushing is pressed in, resulting in the scrapping of the bushing and the workpiece, and thus generating failure costs. Therefore, it is necessary to improve the above technical problems, and this case is thus born. Content of the Utility Model

[0003] The utility model makes improvements to the above-mentioned existing technical problems, that is, the technical problem to be solved by the utility model is to provide a jig for assembling a bushing of an exhaust silencing system bracket of a commercial truck.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a jig for assembling a bushing of an exhaust silencing system bracket of a commercial truck, including a bottom plate arranged below the pressing head of a hydraulic device, one end of the top surface of the bottom plate is provided with a positioning component located directly below the pressing head, and the other end of the top surface of the bottom plate is provided with a supporting component. The positioning component includes a positioning sleeve vertically fixed on the bottom plate and used for supporting the lower end surface of the bushing hole of the workpiece. A workpiece positioning shaft is slidably connected in the positioning sleeve along the vertical direction to facilitate the bushing hole of the workpiece to be sleeved thereon. The top of the workpiece positioning shaft is coaxially provided with a bushing positioning shaft to facilitate the bushing to be sleeved thereon.

[0005] Further, a vertically telescopic return spring is arranged below the workpiece positioning shaft inside the positioning sleeve. The top of the return spring abuts against the bottom of the workpiece positioning shaft, and the bottom of the return spring abuts against the inner bottom surface of the positioning sleeve.

[0006] Further, a sliding guide groove extending along the vertical direction is arranged on the outer peripheral side surface of the workpiece positioning shaft; a guide screw is screwed along the radial direction on the peripheral side of the positioning sleeve, the guide screw extends into the inner cavity of the positioning sleeve, and the guide screw extends into the sliding guide groove and is in sliding fit with the sliding guide groove along the vertical direction.

[0007] Further, a workpiece pressing component for pressing the upper end surface of the bushing hole of the workpiece is arranged beside the positioning component.

[0008] Furthermore, the workpiece clamping assembly includes a clamping support, a clamping block and a quick clamp, the clamping support is fixed on the base plate, the quick clamp is installed on the top of the clamping support, the clamping block is fixedly arranged at the lower pressing end of the quick clamp, the clamping block is provided with an arc-shaped clearance recess for facilitating the downward passage of the bushing, and the bottom ends of the arc-shaped clearance recess are respectively provided with clamping protrusions for pressing on the upper end surface of the bushing hole of the workpiece.

[0009] Furthermore, the support assembly includes at least one floating pin vertically fixed on the base plate, the floating pin is used to contact the bottom surface of the workpiece, a support block is provided on the side of each floating pin, and a rotating support column is provided on a side of the upper end of the support block facing the floating pin for contacting the side surface of the workpiece.

[0010] Compared with the prior art, the utility model has the following effects: the utility model has a simple structure and is easy to operate, and can effectively position the workpiece and the bushing so that they can be quickly positioned and prepared accurately, preventing the bushing from tilting and causing damage to the workpiece and bushing assembly, thereby reducing failure costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0012] Figure 2 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0013] Figure 3 It is a schematic diagram of the main structure of an embodiment of the utility model;

[0014] Figure 4 It is a schematic diagram of the structure in which the workpiece is omitted in the embodiment of the utility model;

[0015] Figure 5 This is a schematic diagram of the main cross-sectional structure of the positioning assembly in the embodiment of the utility model;

[0016] Figure 6 It is a schematic diagram of the top view of the workpiece in the embodiment of the utility model;

[0017] Figure 7 It is a schematic diagram of the internal exploded state of the positioning assembly in the embodiment of the utility model;

[0018] Figure 8 It is a three-dimensional structural schematic diagram of a workpiece clamping assembly in an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] As Figures 1 to 8 shown, a jig for assembling a bushing of a business truck exhaust silencing system bracket according to the present utility model, the workpiece 1 targeted is a business truck exhaust silencing system bracket. The jig includes a bottom plate 3 disposed below the pressure head 2 of the hydraulic equipment. The pressure head is driven by the hydraulic equipment to move up and down for pressing the bushing. One end of the top surface of the bottom plate 3 is provided with a positioning assembly 4 directly below the pressure head, and the other end of the top surface of the bottom plate 3 is provided with a support assembly 5. The positioning assembly and the support assembly are distributed at opposite ends (such as the left and right ends) of the top surface of the bottom plate. The positioning assembly 4 includes a positioning sleeve 6 vertically fixed on the top surface of the bottom plate 3. The top surface of the positioning sleeve 6 is used to contact the lower end surface of the bushing hole 7 of the workpiece, and the lower end surface of the bushing hole 7 of the workpiece is supported by the positioning sleeve 6. A workpiece positioning shaft 8 is slidably connected vertically inside the positioning sleeve 6, and the workpiece positioning shaft 8 facilitates the insertion of the bushing hole 7 of the workpiece. A bushing positioning shaft 9 is coaxially provided at the top of the workpiece positioning shaft 8, and the bushing positioning shaft 9 facilitates the insertion of the bushing 10. The bushing positioning shaft is directly below the pressure head.

[0022] In this embodiment, a return spring 11 that telescopically moves vertically is provided below the workpiece positioning shaft 8 inside the positioning sleeve 6. The top of the return spring 11 abuts against the bottom of the workpiece positioning shaft 8, and the bottom of the return spring 11 abuts against the inner bottom surface of the positioning sleeve 6. The return spring is used to push the workpiece positioning shaft to reset upward.

[0023] In this embodiment, a sliding guide groove 12 extending vertically is provided on the outer peripheral side surface of the workpiece positioning shaft 8. A guide screw 13 is screwed radially on the peripheral side of the positioning sleeve 6. The guide screw 13 extends into the inner cavity of the positioning sleeve 6, and the guide screw 13 extends into the sliding guide groove 12 and is in vertical sliding fit with the sliding guide groove 12. By providing the cooperation of the guide screw and the sliding guide groove, on the one hand, it can guide the vertical movement of the workpiece positioning shaft in the positioning sleeve, and on the other hand, it can prevent the relative rotation between the workpiece positioning shaft and the positioning sleeve.

[0024] In this embodiment, a first counterbore 14 for inserting the bushing positioning shaft 9 is provided in the middle of the top surface of the workpiece positioning shaft 8, and a second counterbore 15 for the return spring 11 to extend into is provided in the middle of the bottom surface of the workpiece positioning shaft 8.

[0025] In this embodiment, a workpiece clamping assembly for pressing the upper end surface of the bushing hole 7 of the workpiece is provided on the side of the positioning assembly 4. Specifically, the workpiece clamping assembly includes a clamping support 16, a clamping block 17 and a quick clamp 18. The clamping support 16 is fixed on the base plate 3, and the quick clamp 18 is horizontally installed on the top of the clamping support 16. The clamping block 17 is fixedly set at the lower pressing end of the quick clamp 18, and the clamping block is driven by the handle of the quick clamp to achieve downward pressing; the clamping block 17 is provided with an arc-shaped clearance recess 19 to facilitate the downward passage of the bushing 10. The arc-shaped clearance recess 19 is arranged on the outer peripheral side of the workpiece positioning shaft 8, and the bottom ends of the arc-shaped clearance recess 19 are respectively provided with downwardly protruding clamping protrusions 20, which are used to be pressed on the upper end surface of the bushing hole 7 of the workpiece 1, so as to achieve pressing the workpiece from top to bottom.

[0026] In this embodiment, the support assembly 5 includes two floating pins 21 vertically fixed to the bottom plate 3, the two floating pins are distributed front and back, the floating pins 21 are used to contact the bottom surface of the workpiece 1, and a support block 22 is provided on the side of each floating pin 21. The upper end of the support block 22 is provided with a rotating support column 23 for contacting the side of the workpiece 1 facing the side of the floating pin 21 on the same side. When in use, the bushing hole of the workpiece is placed on the workpiece positioning shaft, the workpiece rotates to lean against the rotating support column, and the floating pins support the bottom surface of the workpiece to prevent the workpiece from tilting.

[0027] Assembly process of exhaust silencer system bracket for commercial trucks: first, place the bushing hole 7 of workpiece 1 onto the workpiece positioning shaft 8, rotate workpiece 1 against the rotating support column 23, and the floating pin 21 supports the bottom surface of workpiece 1 to prevent the workpiece from tilting, and then use the quick clamp 18 to press the clamping block 17 against the upper end surface of the bushing hole 7 of workpiece 1, place the bushing 10 into the bushing positioning shaft 9, place the pressure head 2 above the bushing 10, start the hydraulic equipment, and the hydraulic equipment pushes the pressure head 2 to move downward. The pressure head 2 pushes the bushing 10 into the bushing hole 7. When the bushing 10 is pressed to contact the workpiece positioning shaft 8, it will press the workpiece positioning shaft downward until it is pressed to the bottom and cannot be pressed down. Then the bushing is assembled, the pressure head is removed, the quick clamp is released, the workpiece is taken out, and the assembly is completed.

[0028] The fixture has a simple structure and is easy to operate. It can effectively position the workpiece and the bushing so that they can be quickly positioned and accurately prepared, preventing the bushing from tilting and causing damage to the workpiece and bushing assembly, thereby reducing failure costs.

[0029] If the utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws), or it can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by integral casting) (except when it is obviously impossible to adopt the integral forming process).

[0030] In addition, for any technical solution disclosed in the above utility model, the terms used to represent the positional relationship or shape shall, unless otherwise stated, include states or shapes that are approximate, similar, or close to it.

[0031] Any component provided by the utility model can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0032] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them; although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the utility model or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the utility model, they should all be covered within the scope of the technical solutions claimed by the utility model.

Claims

1. A commercial truck exhaust muffler system bracket bushing assembly jig, comprising a bottom plate arranged below a pressure head of a hydraulic device, characterized in that: A positioning assembly is provided at one end of the top surface of the base plate and is located directly below the pressure head, and a supporting assembly is provided at the other end of the top surface of the base plate. The positioning assembly includes a positioning sleeve vertically fixed to the base plate and used to support the lower end surface of the bushing hole of the workpiece, a workpiece positioning shaft is vertically slidably connected inside the positioning sleeve to facilitate the insertion of the bushing hole of the workpiece, and a bushing positioning shaft is coaxially provided on the top of the workpiece positioning shaft to facilitate the insertion of the bushing.

2. The commercial truck exhaust muffler system bracket bushing assembly jig according to claim 1, characterized in that: A vertically retractable return spring is provided inside the positioning sleeve below the workpiece positioning shaft, the top of the return spring abuts against the bottom of the workpiece positioning shaft, and the bottom of the return spring abuts against the inner bottom surface of the positioning sleeve.

3. The commercial truck exhaust muffler system bracket bushing assembly jig according to claim 1, characterized in that: The outer peripheral side surface of the workpiece positioning shaft is provided with a sliding guide groove extending vertically; the peripheral side portion of the positioning sleeve is threaded with a guide screw in the radial direction, the guide screw extends into the inner cavity of the positioning sleeve, the guide screw extends into the sliding guide groove and slides vertically with the sliding guide groove.

4. The commercial truck exhaust muffler system bracket bushing assembly jig according to claim 1, characterized in that: A workpiece clamping assembly for pressing the upper end surface of the bushing hole of the workpiece is arranged beside the positioning assembly.

5. The commercial truck exhaust muffler system bracket bushing assembly jig according to claim 4, characterized in that: The workpiece clamping assembly includes a clamping support, a clamping block and a quick clamp, the clamping support is fixed on the base plate, the quick clamp is installed on the top of the clamping support, the clamping block is fixedly arranged at the lower pressing end of the quick clamp, the clamping block is provided with an arc-shaped clearance recess for facilitating the downward passage of the bushing, and the bottom ends of the arc-shaped clearance recess are respectively provided with clamping protrusions for pressing on the upper end surface of the bushing hole of the workpiece.

6. The commercial truck exhaust muffler system bracket bushing assembly jig according to claim 1, characterized in that: The support assembly includes at least one floating pin vertically fixed on the base plate, the floating pin is used to contact the bottom surface of the workpiece, a support block is arranged on the side of each floating pin, and a rotating support column is arranged on a side of the upper end of the support block facing the floating pin for contacting the side surface of the workpiece.

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