Spare tire support front face machining clamp

Abstract

The utility model relates to a spare tire support front face machining clamp which comprises two oppositely-arranged L-shaped plates and a bridge plate arranged between the two L-shaped plates, a spare tire support fixing end clamping mechanism and a spare tire support supporting mechanism are arranged on the bridge plate, and a defect detection mechanism is arranged on the spare tire support fixing end clamping mechanism. The spare tire support front machining fixture has the advantages that the defect detection mechanism is arranged and can detect whether a mounting hole milled at the fixed end of the spare tire support has defects or not and whether the spare tire support is horizontal or not on the spare tire support front machining fixture or not.

Description

Technical Field

[0001] The utility model relates to the field of milling machining, in particular to a fixture for machining the front side of a spare tire bracket. Background Art

[0002] A spare tire bracket usually includes a fixed end and a suspension end. The fixed end is used to connect with the vehicle body to fix the spare tire bracket, and the suspension end is used to install a spare tire box and suspend a spare tire. Therefore, when machining the spare tire bracket, it is necessary to machine the front and back sides of the spare tire bracket respectively to mill mounting holes at the fixed end and the suspension end. In order to ensure that the spare tire bracket can be stably fixed on the vehicle and can suspend the spare tire, it is necessary to keep the spare tire bracket horizontal during milling. Once it is tilted, the mounting holes will be tilted, which will affect the stability of the spare tire bracket after installation. Summary of the Invention

[0003] The utility model mainly solves the above problems and provides a fixture for machining the front side of a spare tire bracket that can detect whether the spare tire bracket is horizontal.

[0004] The technical solution adopted by the utility model to solve its technical problems is that a fixture for machining the front side of a spare tire bracket includes two relatively arranged L-shaped plates and a bridge plate arranged between the two L-shaped plates. A clamping mechanism for the fixed end of the spare tire bracket and a supporting mechanism for the spare tire bracket are arranged on the bridge plate, and a flaw detection mechanism is arranged on the clamping mechanism for the fixed end of the spare tire bracket.

[0005] As a preferred solution of the above scheme, the clamping mechanism for the fixed end of the spare tire bracket includes a lever cylinder and a push rod. A pressing head is arranged at the lever end of the lever cylinder, and the pressing head abuts against the push rod when the lever is pressed down.

[0006] As a preferred solution of the above scheme, the flaw detection mechanism includes a sealing gasket arranged on the pressing head and a groove arranged at the upper end of the push rod. A hollow cylinder is arranged in the middle of the groove. A lifting baffle is arranged at the upper end of the hollow cylinder. The inside of the hollow cylinder is hollow and is connected to a high-pressure air source through an air pipe. The hollow cylinder is arranged lower than the edge of the groove, and the lifting baffle is higher than the edge of the groove when lifted. A barometric pressure sensor is arranged in the groove.

[0007] As a preferred solution of the above scheme, the lifting baffle includes a horizontal baffle and a plurality of connecting columns. A plurality of vertical grooves are arranged at the upper end of the hollow cylinder, and the connecting columns are slidably arranged in the vertical grooves, and the horizontal baffle is arranged at the upper ends of the connecting columns.

[0008] As a preferred solution of the above scheme, the supporting mechanism for the spare tire bracket includes a seat body. A positioning column, a horizontal jack, a vertical jack and an inclined jack are arranged on the seat body. The positioning column extends into the suspension end of the spare tire bracket from the back side of the spare tire bracket, and the horizontal jack, the vertical jack and the inclined jack respectively abut against the spare tire bracket.

[0009] As a preferred solution of the above solution, an auxiliary limiting plate is provided on the bridge plate.

[0010] The advantages of the present utility model are: a flaw detection mechanism is provided, which can detect whether there are flaws in the installation holes milled at the fixed end of the spare tire bracket and whether the spare tire bracket is horizontal in the front processing fixture of the spare tire bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic three-dimensional structure diagram of the front processing fixture of the spare tire bracket in the embodiment.

[0012] Figure 2 It is another schematic three-dimensional structure diagram of the front processing fixture of the spare tire bracket in the embodiment.

[0013] Figure 3 It is a schematic cross-sectional structure diagram of the ejector rod and the lifting baffle in the embodiment.

[0014] 1 - L plate 2 - bridge plate 3 - lever cylinder 4 - ejector rod 5 - pressure head 6 - seat body 7 - positioning column 8 - vertical ejector head 9 - horizontal ejector head 10 - inclined ejector head 11 - auxiliary limiting plate 12 - hollow column 13 - connecting column 14 - horizontal baffle 15 - vertical groove 16 - groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions of the present invention will be further described below through embodiments in conjunction with the drawings.

[0016] Embodiment:

[0017] A front processing fixture for a spare tire bracket in this embodiment is used to process the front of the spare tire bracket. When processing the spare tire bracket, first use the back processing fixture of the spare tire bracket to process the back and sides of the spare tire bracket, and then use the front processing fixture of the spare tire bracket to process the front of the spare tire bracket.

[0018] As Figure 1 and Figure 2 shown, the front processing fixture of the spare tire bracket includes two relatively arranged L plates 1 and a bridge plate 2 provided between the two L plates. An end clamping mechanism for the fixed end of the spare tire bracket and a support mechanism for the spare tire bracket are provided on the bridge plate 2, and a flaw detection mechanism is provided on the end clamping mechanism for the fixed end of the spare tire bracket.

[0019] The end clamping mechanism for the fixed end of the spare tire bracket includes a lever cylinder 3 and an ejector rod 4. A pressure head 5 is provided at the lever end of the lever cylinder 3, and the pressure head 5 abuts against the ejector rod 4 when the lever is pressed down. The end clamping mechanism for the fixed end of the spare tire bracket is used to clamp the spare tire bracket through the installation holes completed by milling.

[0020] The spare tire support mechanism includes a seat body 6. The seat body 6 is provided with a positioning column 7, a horizontal top head 9, a vertical top head 8, and an inclined top head 10. The positioning column 7 extends from the back of the spare tire support into the suspension end of the spare tire support, and the horizontal top head 9, the vertical top head 8, and the inclined top head 10 are respectively abutted against the spare tire support.

[0021] As Figure 3 shown, the flaw detection mechanism includes a gasket provided on the press head 5 and a groove 16 provided at the upper end of the ejector rod. A hollow column 12 is provided in the middle of the groove. A lifting baffle is provided at the upper end of the hollow column. The inside of the hollow column 12 is hollow and connected to a high-pressure air source through an air pipe. The hollow column 12 is arranged lower than the edge of the groove. When the lifting baffle is lifted, it is higher than the edge of the groove. A pressure sensor is provided in the groove. The lifting baffle includes a horizontal baffle 14 and a plurality of connecting columns 13. A plurality of vertical grooves 15 are provided at the upper end of the hollow column 12. The connecting columns 13 are slidably arranged in the vertical grooves 15, and the horizontal baffle 14 is arranged at the upper end of the connecting columns. When the spare tire support is not placed, the high-pressure air source discharges air, and the air flow blows up the horizontal plate so that the horizontal plate is higher than the ejector rod. Under the action of the horizontal plate, the air flow blows out radially outward to blow off the debris on the ejector rod. After the fixed end of the spare tire support clamps the spare tire support, the mounting hole milled on the fixture on the back of the spare tire support abuts against the ejector rod. At this time, the gasket on the press head covers the mounting hole, making the groove a sealed cavity. Then, after the high-pressure air source discharges air and is closed, the gas can only flow out through the gap between the milled surface of the mounting hole and the ejector rod in this sealed cavity. By detecting the change in air pressure in the groove with a pressure sensor, it can be detected whether there are flaws on the milled surface of the mounting hole or whether the spare tire support is horizontal. Specifically, if the air pressure drops rapidly, it indicates that the spare tire support is not placed flat or there are flaws in the milling of the mounting hole. If the air pressure drops slowly, it indicates that the spare tire support is placed flat and there are no flaws in the milling of the mounting hole.

[0022] In addition, an auxiliary limit plate for guiding the spare tire support, a lifting ring for facilitating the hoisting of the fixture, a pressure gauge for detecting the pressure of the power rod, etc. are also provided on the bridge plate.

[0023] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A spare tire bracket front processing fixture, characterized by: It comprises two L-plates arranged opposite to each other and a bridge plate arranged between the two L-plates, the bridge plate is provided with a spare tire bracket fixed end clamping mechanism and a spare tire bracket supporting mechanism, and the spare tire bracket fixed end clamping mechanism is provided with a defect detection mechanism.

2. The front processing fixture for the spare tire bracket according to claim 1 is characterized in that: The fixing end clamping mechanism of the spare tire bracket comprises a lever cylinder and a push rod. The end of the lever of the lever cylinder is provided with a pressure head, and the pressure head abuts against the push rod when the lever is pressed down.

3. The front processing fixture for the spare tire bracket according to claim 2 is characterized in that: The defect detection mechanism includes a sealing pad arranged on the pressure head and a groove arranged at the upper end of the push rod, a hollow cylinder is arranged in the middle of the groove, a lifting baffle is arranged on the upper end of the hollow cylinder, the hollow interior of the hollow cylinder is connected to the high-pressure air source through an air pipe, the hollow cylinder is arranged below the edge of the groove, the lifting baffle is higher than the edge of the groove when lifted, and an air pressure sensor is arranged in the groove.

4. The front processing fixture for the spare tire bracket according to claim 3 is characterized by: The lifting baffle comprises a horizontal baffle and a plurality of connecting columns. The upper end of the hollow cylinder is provided with a plurality of vertical grooves. The connecting columns are slidably arranged in the vertical grooves. The horizontal baffle is arranged at the upper end of the connecting columns.

5. The spare tire bracket front processing fixture according to claim 1 is characterized by: The spare tire bracket support mechanism includes a seat body, on which a positioning column, a horizontal top head, a vertical top head and an inclined top head are provided. The positioning column extends to the back of the spare tire bracket and extends into the hanging end of the spare tire bracket. The horizontal top head, the vertical top head and the inclined top head are respectively against the spare tire bracket.

6. The front processing fixture for the spare tire bracket according to claim 1 is characterized by: An auxiliary limiting plate is arranged on the bridge plate.

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