Silencer shell air inlet flaring device

Abstract

The utility model discloses a silencer shell air inlet flaring device which comprises a base and a fixing plate fixedly installed at the upper end of the base, a lifting platform is arranged at the upper end of the fixing plate, a hydraulic rod is arranged between the lifting platform and the fixing plate, and a tool is fixedly installed at the upper end of the base. A shell body is arranged on the surface of the base tool in a penetrating mode, and an adjusting support is arranged at the upper end of the tool. According to the silencer shell air inlet flaring device, when flaring is needed, a hydraulic rod on a fixing plate is used for driving a lifting platform to adjust the height, so that a fixing head is aligned to the surface of a silencer shell for installation, meanwhile, an opening is formed in the fixing head, and the situation that a flaring head is pulled out of a round hole is not hindered is avoided; and a buffer spring for buffering and an embedded rod are arranged between the fixing head and the fixing base, so that the flaring effect can be achieved, the problem that when the fixing head makes contact with the shell body, damage is caused by large impact force is solved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion of muffler shells, in particular to an air inlet expansion device of a muffler shell. Background Art

[0002] The muffler housing air inlet expansion device is a device used to improve the ventilation performance of the air inlet in the muffler housing. Usually, the muffler housing is designed with an air inlet for air intake and exhaust. However, sometimes the design of the air inlet may have certain limitations, resulting in poor ventilation performance. Therefore, in order to improve this situation, an air inlet expansion device can be used.

[0003] For example, a metal tube expanding device with publication number CN113333600A includes a bottom plate, the left side of the bottom plate is slidably connected to the lower end of the sliding plate, the upper part of the sliding plate is slidably connected to the clamping plate, the right end of the bottom plate is provided with a support plate, the upper part of the support plate is rotatably connected to the right side of the rotating sleeve, the interior of the rotating sleeve is a hollow structure, the interior of the rotating sleeve is rotatably connected to the second screw rod, the left side of the rotating sleeve is evenly distributed with a plurality of third slide grooves relative to the axis of the rotating sleeve, the right side of the third slide groove is provided with a guide column fixedly connected to the rotating sleeve, the middle part of the guide column is slidably connected to the right end of the lifting plate, the left side of the lifting plate is provided with a fourth slide groove, the middle part of the fourth slide groove is slidably connected to the third slider, and the side of the third slider away from the rotating sleeve is rotatably connected to one end of the fixed seat. It is suitable for a metal tube expanding device. During the process of expanding the pipe, the expanding angle slowly increases, making the entire expanding process smoother;

[0004] The above-mentioned metal tube expanding device can make the entire expanding process smoother by rotating one end of the third slider connected to the fixed seat on the side away from the rotating sleeve. However, when using the expanding device to expand the muffler shell, if the position where the expansion is required is at the upper end of the shell, there are greater disadvantages, and when expanding the air inlet of the muffler shell, the muffler shell is prone to shaking, resulting in deviation in the expansion. Utility Model Content

[0005] The purpose of the utility model is to provide a device for expanding the air inlet of a muffler shell, so as to solve the problem in the background art that when expanding the air inlet of the muffler shell, the muffler shell is prone to shaking, resulting in deviation in the expansion.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for expanding the air inlet of a muffler housing, comprising a base and a fixing plate fixedly mounted on the upper end of the base, wherein a lifting platform is provided on the upper end of the fixing plate, and a hydraulic rod is provided between the lifting platform and the fixing plate, and a tool is fixedly mounted on the upper end of the base, wherein the surface of the base tool penetrates the housing body, and an adjustment support is provided on the upper end of the tool, and an expanding head is provided inside the adjustment support, and a pressing piece is provided on the lower end of the tool;

[0007] A fixing seat is fixedly installed at the lower end of the lifting platform, and a fixing protection mechanism is provided below the fixing seat;

[0008] A fixing block is fixedly installed on the inner side of the fixing plate, and a clamping protection mechanism is provided on the inner side of the fixing block.

[0009] Furthermore, a telescopic rod is fixedly installed at the front end of the tooling, and a limiting piece is provided at the output end of the telescopic rod, and the limiting piece can be moved forward and backward to fit under the front end of the tooling.

[0010] Furthermore, the position of the expansion head can be adjusted left and right by adjusting the support, and the upper end of the expansion head abuts against the inner wall of the shell body, and the lower end of the pressing piece abuts against the lower inner wall of the shell body.

[0011] Furthermore, the fixing protection mechanism is provided with a fixing head, and the upper end of the fixing head is arranged at the lower end of the fixing seat, and a hole is opened in the center of the fixing head, and the bottom of the fixing head is arc-shaped.

[0012] Furthermore, an embedded rod is provided inside the fixing seat, and the embedded rod is embedded in the upper end of the fixing head, and a buffer spring is provided between the fixing head and the fixing seat.

[0013] Furthermore, the clamping protection mechanism is provided with a positioning rod, and the positioning rod is fixedly installed on the inner side of the fixed block, and a moving block is installed through the surface of the positioning rod, and a rotating rod is rotatably installed on the inner side of the moving block, and the inner side of the rotating rod is rotatably installed on the contact piece.

[0014] Furthermore, a return spring is nested on the surface of the positioning rod, and the front and rear ends of the return spring are fixedly installed between the moving block and the fixed block, and a damping rod is fixedly installed between the fixed block and the contact piece, and the front and rear ends of the contact piece are arc-shaped.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. A tooling is provided for convenient installation of the housing body. When the air inlet of the muffler housing needs to be expanded, the housing body is put on the tooling. At this time, the position of the limiter is adjusted by activating the telescopic rod until the position of the limiter is located below the front end of the tooling, thereby fixing the housing body and conveniently placing the housing body in position.

[0017] Furthermore, when the shell body is placed on the tooling, the inner portion of the shell body is pushed by the setting of the lower pressing piece, thereby supporting the shell body while making the position of the expansion mouth correspond to the position of the muffler shell, and the position of the expansion mouth can be fine-tuned by adjusting the support, thereby enabling convenient expansion setting;

[0018] Furthermore, when expansion is required, the hydraulic rod on the fixing plate is used to drive the lifting platform to adjust its height, so that the fixed head is aligned with the surface of the muffler shell for installation. At the same time, an opening is provided inside the fixing head, which does not hinder the extraction of the circular hole of the expansion head. A buffer spring and an embedded rod are provided between the fixing head and the fixing seat, so as to achieve the expansion effect and avoid the problem of damage caused by the large impact force when the fixing head contacts the shell body, thereby improving the service life of the device.

[0019] 2. When the muffler shell is expanded, a buffer clamping component is provided on the inner side of the fixed plate through the fixing block. When the shell body is installed, the shell body squeezes the contact piece outward due to the inclination of the contact piece after installation. The contact piece is squeezed and pressure is applied to the rotating rod. The left and right ends of the rotating rod are rotated to push the moving block to slide along the positioning rod. When the moving block slides along the positioning rod, it squeezes the return spring. The return spring is squeezed and applies pressure to the contact piece in the opposite direction through its own elastic force, so that the contact piece clamps and limits the shell body under the cooperation of the damping rod, and performs shock absorption to avoid expansion failure due to shaking when the shell body is expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 This is a front-view three-dimensional structural diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the tooling of the utility model in side section;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed head of the utility model;

[0024] Figure 5 This is a schematic diagram of the contact structure of the utility model from a top view;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the fixing block of the utility model in a top-down view.

[0026] In the figure: 1. Base; 2. Fixed plate; 3. Lifting platform; 4. Tooling; 5. Telescopic rod; 6. Limiting piece; 7. Shell body; 8. Fixed head; 9. Adjusting support; 10. Expansion head; 11. Pressing piece; 12. Fixed seat; 13. Buffer spring; 14. Embedded rod; 15. Fixed block; 16. Positioning rod; 17. Moving block; 18. Reset spring; 19. Rotating rod; 20. Contact piece; 21. Damping rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1:

[0029] like Figure 1 、 Figure 2 、 Figure 3 and Figure 5 The technical solution shown, in order to solve the problem of inconvenience in expanding the air inlet of the muffler shell, discloses: a base 1 and a fixing plate 2 fixedly mounted on the upper end of the base 1, and a lifting platform 3 is provided on the upper end of the fixing plate 2, and a hydraulic rod is provided between the lifting platform 3 and the fixing plate 2, and a tool 4 is fixedly mounted on the upper end of the base 1, the surface of the tool 4 of the base 1 passes through the shell body 7, and an adjusting support 9 is provided on the upper end of the tool 4, and an expanding head 10 is provided inside the adjusting support 9, and a pressing piece 11 is provided at the lower end of the tool 4, a telescopic rod 5 is fixedly mounted on the front end of the tool 4, and a limiting piece 6 is provided at the output end of the telescopic rod 5, and the limiting piece 6 can be moved forward and backward to fit under the front end of the tool 4, the position of the expanding head 10 can be adjusted left and right by adjusting the support 9, and the upper end of the expanding head 10 abuts against the inner wall of the shell body 7, and the lower end of the pressing piece 11 abuts against the lower inner wall of the shell body 7;

[0030] In the embodiment, a tooling 4 is provided for convenient installation of the shell body 7. When the air inlet of the muffler shell needs to be expanded, the shell body 7 is put on the tooling 4. At this time, the position of the limiter 6 is adjusted by starting the telescopic rod 5 until the position of the limiter 6 is located below the front end of the tooling 4, so that the shell body 7 is fixed and locked, and the shell body 7 is conveniently placed and positioned. When the shell body 7 is placed on the tooling 4, the inner part of the shell body 7 is pushed by the setting of the down-pressing member 11, thereby supporting the shell body 7 while making the position of the expansion head 10 correspond to the position of the muffler shell, and the position of the expansion head 10 can be fine-tuned by adjusting the support 9, so that the expansion setting can be conveniently performed. Example

[0031] like Figure 2 and Figure 4 The technical solution shown, in order to solve the problem that the muffler housing is easily damaged due to pressure when it is pressed down, discloses: a fixing seat 12 is fixedly installed at the lower end of the lifting platform 3, and a fixing protection mechanism is provided below the fixing seat 12, the fixing protection mechanism is provided with a fixing head 8, and the upper end of the fixing head 8 is provided at the lower end of the fixing seat 12, and a hole is opened in the center of the fixing head 8, and the bottom of the fixing head 8 is in an arc shape, an embedded rod 14 is provided inside the fixing seat 12, and the embedded rod 14 is embedded in the upper end of the fixing head 8, and a buffer spring 13 is provided between the fixing head 8 and the fixing seat 12;

[0032] In the embodiment, when flaring is required, the hydraulic rod on the fixing plate 2 is used to drive the lifting platform 3 to adjust its height, so that the fixing head 8 is aligned with the surface of the muffler shell for installation. At the same time, an opening is provided inside the fixing head 8, which does not hinder the extraction of the circular hole of the flaring head 10. A buffer spring 13 and an embedded rod 14 are provided between the fixing head 8 and the fixing seat 12, so as to achieve the flaring effect and avoid the problem of damage caused by the large impact force when the fixing head 8 contacts the shell body 7, thereby improving the service life of the device. Example

[0033] like Figure 5 and Figure 6The technical solution shown, in order to solve the problem that the muffler housing is prone to shaking and deflecting when the mouth is expanded, discloses: a fixed block 15 is fixedly installed on the inner side of the fixed plate 2, and a clamping protection mechanism is provided on the inner side of the fixed block 15, and the clamping protection mechanism is provided with a positioning rod 16, and the positioning rod 16 is fixedly installed on the inner side of the fixed block 15, and a moving block 17 is installed through the surface of the positioning rod 16, and a rotating rod 19 is rotatably installed on the inner side of the moving block 17, and the inner side of the rotating rod 19 is rotatably installed on the contact member 20, a return spring 18 is nested on the surface of the positioning rod 16, and the front and rear ends of the return spring 18 are fixedly installed between the moving block 17 and the fixed block 15, and a damping rod 21 is fixedly installed between the fixed block 15 and the contact member 20, and the front and rear ends of the contact member 20 are arc-shaped;

[0034] In the embodiment, when the muffler shell is expanded, a buffer clamping component is provided on the inner side of the fixed block 15 of the fixing plate 2. When the shell body 7 is installed, the shell body 7 squeezes the contact piece 20 outward due to the inclination of the contact piece 20 after installation. The contact piece 20 is squeezed and applies pressure to the rotating rod 19. The left and right ends of the rotating rod 19 are rotated to push the moving block 17 to slide along the positioning rod 16. When the moving block 17 slides along the positioning rod 16, it squeezes the return spring 18. The return spring 18 is squeezed and applies pressure to the contact piece 20 in the opposite direction through its own elastic force, so that the contact piece 20 clamps and limits the shell body 7 under the cooperation of the damping rod 21, and performs shock absorption to avoid expansion failure due to shaking when the shell body 7 is expanded.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for expanding the air inlet of a muffler housing, comprising a base (1) and a fixing plate (2) fixedly mounted on the upper end of the base (1), wherein a lifting platform (3) is provided on the upper end of the fixing plate (2), and a hydraulic rod is provided between the lifting platform (3) and the fixing plate (2), and a tool (4) is fixedly mounted on the upper end of the base (1), a housing body (7) is provided through the surface of the tool (4) of the base (1), and an adjusting support (9) is provided on the upper end of the tool (4), and an expanding head (10) is provided inside the adjusting support (9), and a pressing piece (11) is provided on the lower end of the tool (4); Its characteristics are: A fixing seat (12) is fixedly mounted on the lower end of the lifting platform (3), and a fixing protection mechanism is provided below the fixing seat (12); A fixing block (15) is fixedly mounted on the inner side of the fixing plate (2), and a clamping protection mechanism is provided on the inner side of the fixing block (15).

2. The muffler housing air inlet expansion device according to claim 1, characterized in that: A telescopic rod (5) is fixedly mounted on the front end of the tooling (4), and a limiting member (6) is provided at the output end of the telescopic rod (5), and the limiting member (6) can fit under the front end of the tooling (4) by moving forward and backward.

3. The muffler housing air inlet expansion device according to claim 2, characterized in that: The position of the expansion mouth (10) can be adjusted left and right by adjusting the support (9), and the upper end of the expansion mouth (10) abuts against the inner wall of the shell body (7), and the lower end of the pressing piece (11) abuts against the lower inner wall of the shell body (7).

4. The muffler housing air inlet expansion device according to claim 1, characterized in that: The fixing protection mechanism is provided with a fixing head (8), the upper end of the fixing head (8) is arranged at the lower end of the fixing seat (12), a hole is opened in the center of the fixing head (8), and the bottom of the fixing head (8) is in an arc shape.

5. The muffler housing air inlet expansion device according to claim 4, characterized in that: An embedded rod (14) is provided inside the fixing seat (12), and the embedded rod (14) is embedded inside the upper end of the fixing head (8), and a buffer spring (13) is provided between the fixing head (8) and the fixing seat (12).

6. The muffler housing air inlet expansion device according to claim 1, characterized in that: The clamping protection mechanism is provided with a positioning rod (16), and the positioning rod (16) is fixedly installed on the inner side of the fixed block (15), and a moving block (17) is installed through the surface of the positioning rod (16), and a rotating rod (19) is rotatably installed on the inner side of the moving block (17), and the inner side of the rotating rod (19) is rotatably installed on the contact member (20).

7. The muffler housing air inlet expansion device according to claim 6, characterized in that: A return spring (18) is nested on the surface of the positioning rod (16), and the front and rear ends of the return spring (18) are fixedly installed between the moving block (17) and the fixed block (15), and a damping rod (21) is fixedly installed between the fixed block (15) and the contact member (20), and the front and rear ends of the contact member (20) are arc-shaped.

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