Detection tool for automobile engine mounting bracket

Abstract

The utility model relates to a testing fixture for an automobile engine mounting bracket. The testing fixture comprises a bedplate, and a normal position detection module and a side position detection module which are arranged on the bedplate, the normal position detection module comprises a first bottom plate transversely fixed to the top of the platen, a supporting plate transversely arranged above the first bottom plate, a plurality of stand columns fixed between the supporting plate and the first bottom plate, two alignment units arranged at the top of the first bottom plate, and a first pressing unit arranged at the top of the first bottom plate and matched with the two alignment units. According to the utility model, the size data of each important part on the engine mounting bracket can be checked, so that the detection result is comprehensive and complete, and the size precision of the engine mounting bracket is ensured; in addition, the working efficiency is improved, and the structure and operation are simplified.

Description

Technical Field

[0001] The utility model relates to a checking fixture for an automobile engine mounting bracket. Background Art

[0002] An engine mount bracket refers to a bracket used to fix a car engine to the vehicle body frame. The functions of an engine mount bracket can be roughly divided into three parts: "support", "vibration isolation" and "vibration control". An engine mount bracket with excellent performance will not only prevent vibration from being transmitted to the vehicle body, but also help improve the vehicle's maneuverability and steering feel.

[0003] In order to ensure that the performance of the engine mounting bracket can be effectively exerted, the structural dimensional accuracy of each key part of the engine mounting bracket must be strictly controlled. In order to verify the structural dimensional accuracy of the above-mentioned engine mounting bracket, the engine mounting bracket must be reliably fixed with the help of a matching inspection fixture to facilitate the verification of the dimensional data.

[0004] The existing inspection fixture for the engine mounting bracket can only fix the engine mounting bracket in a fixed position, resulting in the inability to verify the dimensional data of some important parts, so the inspection result is not comprehensive enough, which in turn affects the dimensional accuracy of the engine mounting bracket; in addition, the existing inspection fixture for the engine mounting bracket mostly relies on manual operation, and the distribution of positioning points is not reasonable and the number is large, so the work efficiency is low, the structure is complex, and the operation is cumbersome. Therefore, further improvement is needed. Utility Model Content

[0005] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a vehicle engine mounting bracket inspection fixture which can make the inspection results comprehensive and complete to ensure the dimensional accuracy of the engine mounting bracket, improve the work efficiency and simplify the structure and operation.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a check fixture for an automobile engine mounting bracket, characterized in that it comprises a platform and a positive position detection module and a side position detection module arranged on the platform;

[0007] The positive position detection module includes a first bottom plate transversely fixed on the top of the table, a support plate transversely arranged above the first bottom plate, a plurality of columns fixed between the support plate and the first bottom plate, two alignment units arranged on the top of the first bottom plate, and a first pressing unit arranged on the top of the first bottom plate and cooperating with the two alignment units; a plurality of first positioning protrusions are formed upward on the top of the support plate;

[0008] The first clamping unit includes a first bracket fixed on the first bottom plate and capable of laterally adjusting the front, rear, left, and right fixed positions, a first welding clamping cylinder laterally fixed on the first bracket and higher than the support plate, and a pressure strip laterally fixed on the swing end of the first welding clamping cylinder;

[0009] The lateral position detection module includes a second bottom plate transversely fixed on the top of the table plate, a first pad fixed on the top of the second bottom plate and capable of transversely adjusting a front, rear, left, and right fixed position, a first support block fixed on the top of the first pad block, a second pad fixed on the top of the second bottom plate and capable of transversely adjusting a front, rear, left, and right fixed position and located to the right of the first pad block, a second support block fixed on the top of the second pad block, and a second clamping unit disposed on the top of the second bottom plate and cooperating with the first support block and the second support block;

[0010] The second clamping unit comprises a moving frame movably connected to the second bottom plate to have a forward and backward translation function, a moving cylinder fixed on the second bottom plate, a bracket fixed on the moving frame, a second welding clamping cylinder transversely fixed on the bracket, a carrier plate fixed on the bracket and capable of transversely adjusting a front, rear, left, and right fixed position and located to the right of the second welding clamping cylinder, and a clamping cylinder fixed on the carrier plate, the telescopic end of the moving cylinder being transversely arranged forward and fixed on the moving frame, the swing end of the second welding clamping cylinder being arranged forward, and the telescopic end of the clamping cylinder being arranged vertically downward;

[0011] The second clamping unit also includes an L-shaped pressure block and a rectangular pressure block. One end of the L-shaped pressure block is laterally fixed to the swing end of the second welding clamping cylinder and the vertical distance between it and the swing end of the second welding clamping cylinder can be adjusted. The other end of the L-shaped pressure block cooperates with the top of the first support block; the rectangular pressure block is fixed on the telescopic end of the clamping cylinder and is located above the second support block.

[0012] Preferably, the alignment unit includes a second bracket fixed on the first base plate and capable of laterally adjusting the front, rear, left and right fixed position, a guide block fixed on the second bracket and located below the support plate, a lifting cylinder fixed at the bottom of the guide block, and an alignment column vertically inserted in the guide block, wherein the telescopic end of the lifting cylinder is vertically arranged upward and fixed at the lower end of the alignment column.

[0013] Preferably, two buffer compressors are also provided on the pressure strip, and the buffer compressors include a connecting column vertically inserted and fixed in the pressure strip and a pressure head concentrically fixed at the lower end of the connecting column; the ends of the pressure heads in the two buffer compressors respectively cooperate with the upper ends of the two alignment columns.

[0014] Preferably, the second clamping unit also includes a first L-shaped block, a third pad block and a second L-shaped block; one end of the first L-shaped block is vertically fixed on the movable frame and can be laterally adjusted to a front-to-rear fixed position, the third pad block is fixed on the movable frame and can be laterally adjusted to a left-to-right fixed position and longitudinally adjusted to an up-and-down fixed position and is located to the right of the first L-shaped block, and one end of the second L-shaped block is vertically fixed on the third pad block and can be laterally adjusted to a front-to-rear fixed position.

[0015] Preferably, the second clamping unit also includes a fourth pad, a third L-shaped clamp and a clamping seat, the fourth pad is fixed on the movable frame and can be adjusted laterally to a left-right fixed position and longitudinally to an up-and-down fixed position and is located to the right of the third pad; one end of the third L-shaped clamp is vertically fixed on the fourth pad and can be adjusted laterally to a front-and-back fixed position, the clamping seat is fixed on the fourth pad and can be adjusted laterally to a front-and-back fixed position and is located between the rectangular clamp and the second support block.

[0016] Preferably, the top of the first supporting block and the top of the second supporting block are respectively formed with a first positioning inclined surface and a second positioning inclined surface which are arranged higher in the front and lower in the back, and the first positioning inclined surface and the second positioning inclined surface are also respectively fixed with a first positioning pin and a second positioning pin which are arranged perpendicular to the first positioning inclined surface and the second positioning inclined surface, the other end of the L-shaped pressing block cooperates with the end of the first positioning pin, and a positioning notch which cooperates with the end of the second positioning pin is provided at the lower corner of the end of the clamping seat; a plurality of second positioning protrusions which are perpendicular to the first positioning inclined surface are also formed upward on the first positioning inclined surface.

[0017] Preferably, a countersunk hole is opened at the center of the root of the pressure head, the lower end of the connecting column is inserted and fixed in the countersunk hole, and a through hole is opened between the center of the bottom surface of the countersunk hole and the outer wall of the end of the pressure head; the through holes on the pressure heads in the two buffer tighteners respectively cooperate with the upper ends of the alignment columns in the two alignment units.

[0018] Preferably, a vertically distributed buffer spring is embedded inside the lower end of the connecting column, and the end of the buffer spring extends below the connecting column. The outer diameter of the buffer spring is larger than the inner diameter of the through hole so that the end of the buffer spring is tightly pressed against the bottom surface of the countersunk hole.

[0019] Preferably, a vertically arranged guide rod is inserted into the top of the rectangular pressing block, and the upper end of the guide rod is fixed on the carrier plate.

[0020] Compared with the prior art, the utility model has the following advantages: the utility model can automatically fix the engine mounting bracket from two different positions, thereby verifying the dimensional data of each important part on the engine mounting bracket, thereby making the detection result comprehensive and complete, thereby ensuring the dimensional accuracy of the engine mounting bracket; in addition, since the fixing of the engine mounting bracket is improved to automatic operation, the distribution of positioning points is optimized and the number of positioning points is reduced, thereby improving work efficiency and simplifying the structure and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the left front side structural diagram of the utility model;

[0022] Figure 2 It is a right rear structural diagram of the utility model;

[0023] Figure 3 It is a partial enlarged structural diagram of the utility model at A;

[0024] Figure 4 It is a top side structural diagram of the pressure head of the utility model. DETAILED DESCRIPTION

[0025] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0027] like Figures 1 to 4 As shown, a check fixture for an automobile engine mounting bracket includes a platform 1 and a positive position detection module 2 and a side position detection module 3 arranged on the platform 1;

[0028] The positive position detection module 2 includes a first bottom plate 210 transversely fixed on the top of the table 1, a support plate 21 transversely arranged above the first bottom plate 210, a plurality of columns 24 fixed between the support plate 21 and the first bottom plate 210, two alignment units arranged on the top of the first bottom plate 210, and a first pressing unit arranged on the top of the first bottom plate 210 and cooperating with the two alignment units; a plurality of first positioning protrusions 2101 are formed upward on the top of the support plate 21;

[0029] The first clamping unit includes a first bracket 25 fixed on the first base plate 210 and capable of being laterally adjusted to a fixed position in the front, rear, left, and right directions, a first welding clamping cylinder 26 laterally fixed on the first bracket 25 and higher than the support plate 21, and a pressure strip 27 laterally fixed on a swinging end of the first welding clamping cylinder 26;

[0030] The lateral position detection module 3 includes a second bottom plate 321 laterally fixed on the top of the table 1, a first cushion block 31 fixed on the top of the second bottom plate 321 and capable of being laterally adjusted to a fixed position of front, back, left, and right, a first bracket block 33 fixed on the top of the first cushion block 31, a second cushion block 32 fixed on the top of the second bottom plate 321 and capable of being laterally adjusted to a fixed position of front, back, left, and right and located to the right of the first cushion block 31, a second bracket block 34 fixed on the top of the second cushion block 32, and a second clamping unit provided on the top of the second bottom plate 321 and cooperating with the first bracket block 33 and the second bracket block 34;

[0031] The second clamping unit includes a moving frame 35 movably connected to the second bottom plate 321 so as to have a forward and backward translation function, a moving cylinder 36 fixed on the second bottom plate 321, a bracket 39 fixed on the moving frame 35, a second welding clamping cylinder 310 laterally fixed on the bracket 39, a carrier plate 316 fixed on the bracket 39 and capable of laterally adjusting a front, rear, left, and right fixed position and located on the right side of the second welding clamping cylinder 310, and a clamping cylinder 315 fixed on the carrier plate 316, the telescopic end of the moving cylinder 36 is laterally arranged forward and fixed on the moving frame 35, the swing end of the second welding clamping cylinder 310 is arranged forward, and the telescopic end of the clamping cylinder 315 is arranged vertically downward;

[0032] The second clamping unit also includes an L-shaped clamping block 311 and a rectangular clamping block 319. One end of the L-shaped clamping block 311 is laterally fixed to the swing end of the second welding clamping cylinder 310 and the vertical distance between it and the swing end of the second welding clamping cylinder 310 can be adjusted. The other end of the L-shaped clamping block 311 cooperates with the top of the first support block 33; the rectangular clamping block 319 is fixed on the telescopic end of the clamping cylinder 315 and is located above the second support block 34.

[0033] The alignment unit includes a second bracket 29 fixed on the first base plate 210 and capable of being laterally adjusted to a fixed position in the front, rear, left and right directions, a guide block 28 fixed on the second bracket 29 and located below the support plate 21, a lifting cylinder 22 fixed at the bottom of the guide block 28, and an alignment column 23 vertically inserted in the guide block 28, wherein the telescopic end of the lifting cylinder 22 is vertically arranged upward and fixed at the lower end of the alignment column 23.

[0034] Two buffering clamps are also provided on the pressure strip 27, and the buffering clamps include a connecting column 211 vertically inserted and fixed in the pressure strip 27 and a pressing head 212 concentrically fixed at the lower end of the connecting column 211; the ends of the pressing heads 212 in the two buffering clamps respectively cooperate with the upper ends of the two alignment columns 23.

[0035] The second clamping unit also includes a first L-shaped block 36, a third cushion block 37 and a second L-shaped block 38; one end of the first L-shaped block 36 is vertically fixed on the movable frame 35 and can be laterally adjusted to a front-to-rear fixed position, the third cushion block 37 is fixed on the movable frame 35 and can be laterally adjusted to a left-to-right fixed position and longitudinally adjusted to an up-and-down fixed position and is located to the right of the first L-shaped block 36, and one end of the second L-shaped block 38 is vertically fixed on the third cushion block 37 and can be laterally adjusted to a front-to-rear fixed position.

[0036] The second clamping unit also includes a fourth pad 314, a third L-shaped block 317 and a clamping seat 318. The fourth pad 314 is fixed on the movable frame 35 and can be adjusted laterally to a left-right fixed position and longitudinally to an up-down fixed position and is located to the right of the third pad 37; one end of the third L-shaped block 317 is vertically fixed on the fourth pad 314 and can be adjusted laterally to a front-to-back fixed position. The clamping seat 318 is fixed on the fourth pad 314 and can be adjusted laterally to a front-to-back fixed position and is located between the rectangular clamp 319 and the second support block 34.

[0037] The top of the first supporting block 33 and the top of the second supporting block 34 are respectively formed with a first positioning inclined surface 331 and a second positioning inclined surface 341 which are arranged higher in the front and lower in the back. The first positioning inclined surface 331 and the second positioning inclined surface 341 are also respectively fixed with a first positioning pin 312 and a second positioning pin 313 which are arranged perpendicular to the first positioning inclined surface 331 and the second positioning inclined surface 341. The other end of the L-shaped pressing block 311 cooperates with the end of the first positioning pin 312, and a positioning notch 3181 which cooperates with the end of the second positioning pin 313 is provided at the lower corner of the end of the clamping seat 318; a plurality of second positioning protrusions 332 which are perpendicular to the first positioning inclined surface 331 are also formed upward on the first positioning inclined surface 331.

[0038] A countersunk hole 2121 is provided at the center of the root of the pressure head 212, and the lower end of the connecting column 211 is inserted and fixed in the countersunk hole 2121. A through hole 2122 is provided between the center of the bottom surface of the countersunk hole 2121 and the outer wall of the end of the pressure head 212; the through holes 2122 on the pressure heads 212 in the two buffer tighteners respectively cooperate with the upper ends of the alignment columns 23 in the two alignment units.

[0039] A vertically distributed buffer spring 213 is also embedded inside the lower end of the connecting column 211, and the end of the buffer spring 213 extends below the connecting column 211. The outer diameter of the buffer spring 213 is larger than the inner diameter of the through hole 2122 so that the end of the buffer spring 213 is tightly pressed against the bottom surface of the countersunk hole 2121.

[0040] A vertically arranged guide rod 320 is also inserted into the top of the rectangular pressing block 319 , and the upper end of the guide rod 320 is fixed on the carrier plate 316 .

[0041] Working principle:

[0042] The swing end of the first welding clamping cylinder 26 in the first clamping unit in the alignment detection module 2 is driven to swing upward, and then the two buffer clamps are driven to swing upward with the help of the pressure strip 27, and at the same time, the telescopic ends of the lifting cylinders 22 in each alignment unit are driven to retract inward to drive the alignment column 23 to move downward, so that the upper end of each alignment column 23 moves to a position lower than the top of the support plate 21; then the engine mounting bracket is straightened and placed on the top of the support plate 21 and each first positioning protrusion 2101 is inserted into the corresponding structural hole at the bottom of the engine mounting bracket; then the swing end of the first welding clamping cylinder 26 is controlled in the same way to drive the two buffer clamps to swing downward until each buffer The ends of the pressing heads 212 in the clamp are pressed against the bottom inner wall of the engine mounting bracket, and at the same time, the telescopic ends of each lifting cylinder 22 are driven to extend outward to drive the two alignment columns 23 to move upward in the same way, so that the upper ends of the two alignment columns 23 pass through the positioning holes at the bottom of the engine mounting bracket and are inserted into the through holes 2122 on the two pressing heads 212. However, before the upper ends of the two alignment columns 23 reach the limit position, their ends will first contact the end of a corresponding buffer spring 213, thereby effectively offsetting the impact force of the alignment column 23 during insertion; then, the position and inner diameter of each important test hole on the engine mounting bracket can be verified with the help of the matching detection rod.

[0043] After completing the above-mentioned alignment detection, the engine mounting bracket is first removed in the same manner; then the telescopic end of the moving cylinder 36 in the second clamping unit is driven to retract inward to drive the bracket 39, the second welding clamping cylinder 310, the carrier plate 316 and the clamping cylinder 315 to move backward with the help of the moving frame 35, and at the same time, the swing end of the second welding clamping cylinder 310 is driven to swing upward to drive the L-shaped pressing block 311 to swing upward, and then the telescopic end of the clamping cylinder 315 is driven to retract inward to drive the rectangular pressing block 319 to move upward Next, the engine mounting bracket is flipped forward or backward at a certain angle to make it reach the side position required for detection and is placed on the first positioning inclined surface 331 on the first bracket 33 and the second positioning inclined surface 341 on the second bracket 34, and at the same time, the ends of the first positioning pin 312 and the second positioning pin 313 are inserted into the positioning holes at the bottom of the engine mounting bracket at this position; then, the telescopic end of the moving cylinder 36 is driven to extend outward to drive the first L-shaped block 36, the third cushion block 37 and the moving frame 35 to move ... The second L-shaped block 38 moves forward until the other end of the first L-shaped block 36 and the end of the pressing seat 318 extend into the interior of the engine mounting bracket and are pressed against the front inner wall of the engine mounting bracket; in this process, the fourth cushion block 314, the third L-shaped block 317 and the fourth cushion block 314 also move forward with the moving frame 35 until the other end of the third L-shaped block 317 also extends into the interior of the engine mounting bracket and is pressed against the front inner wall of the engine mounting bracket; then, the swing end of the second welding clamping cylinder 310 is driven to swing downward to drive the L-shaped pressing block 311 to swing downward until the other end of the L-shaped pressing block 311 is pressed against the top of the engine mounting bracket at this time; at the same time, the telescopic end of the pressing cylinder 315 is driven to extend outward to drive the rectangular pressing block 319 to move downward until the rectangular pressing block 319 is pressed against the top of the engine mounting bracket at this time; finally, the position and inner diameter of each important test hole on the engine mounting bracket at this position can be verified with the help of a matching detection rod.

[0044] The utility model can automatically fix the engine mounting bracket from two different orientations, and can thereby verify the dimensional data of each important part on the engine mounting bracket, so that the detection result is comprehensive and complete, thereby ensuring the dimensional accuracy of the engine mounting bracket; in addition, since the fixing of the engine mounting bracket is improved to automatic operation, the distribution of positioning points is optimized and the number of positioning points is reduced, thereby improving work efficiency and simplifying structure and operation.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A checking fixture for an automobile engine mounting bracket, characterized in that: It includes a table top and a front position detection module and a side position detection module arranged on the table top; The positive position detection module includes a first bottom plate transversely fixed on the top of the table, a support plate transversely arranged above the first bottom plate, a plurality of columns fixed between the support plate and the first bottom plate, two alignment units arranged on the top of the first bottom plate, and a first pressing unit arranged on the top of the first bottom plate and cooperating with the two alignment units; a plurality of first positioning protrusions are formed upward on the top of the support plate; The first clamping unit includes a first bracket fixed on the first bottom plate and capable of laterally adjusting the front, rear, left, and right fixed positions, a first welding clamping cylinder laterally fixed on the first bracket and higher than the support plate, and a pressure strip laterally fixed on the swing end of the first welding clamping cylinder; The lateral position detection module includes a second bottom plate transversely fixed on the top of the table plate, a first pad fixed on the top of the second bottom plate and capable of transversely adjusting a front, rear, left, and right fixed position, a first support block fixed on the top of the first pad block, a second pad fixed on the top of the second bottom plate and capable of transversely adjusting a front, rear, left, and right fixed position and located to the right of the first pad block, a second support block fixed on the top of the second pad block, and a second clamping unit disposed on the top of the second bottom plate and cooperating with the first support block and the second support block; The second clamping unit comprises a moving frame movably connected to the second bottom plate to have a forward and backward translation function, a moving cylinder fixed on the second bottom plate, a bracket fixed on the moving frame, a second welding clamping cylinder transversely fixed on the bracket, a carrier plate fixed on the bracket and capable of transversely adjusting a front, rear, left, and right fixed position and located to the right of the second welding clamping cylinder, and a clamping cylinder fixed on the carrier plate, the telescopic end of the moving cylinder being transversely arranged forward and fixed on the moving frame, the swing end of the second welding clamping cylinder being arranged forward, and the telescopic end of the clamping cylinder being arranged vertically downward; The second clamping unit also includes an L-shaped pressure block and a rectangular pressure block. One end of the L-shaped pressure block is laterally fixed to the swing end of the second welding clamping cylinder and the vertical distance between it and the swing end of the second welding clamping cylinder can be adjusted. The other end of the L-shaped pressure block cooperates with the top of the first support block; the rectangular pressure block is fixed on the telescopic end of the clamping cylinder and is located above the second support block.

2. A checking fixture for an automobile engine mounting bracket according to claim 1, characterized in that: The alignment unit includes a second bracket fixed on the first base plate and capable of being laterally adjusted to a fixed position front, back, left, and right, a guide block fixed on the second bracket and located below the support plate, a lifting cylinder fixed to the bottom of the guide block, and an alignment column vertically inserted in the guide block, wherein the telescopic end of the lifting cylinder is vertically arranged upward and fixed to the lower end of the alignment column.

3. A checking fixture for an automobile engine mounting bracket according to claim 1, characterized in that: The pressure strip is also provided with two buffering clamps, which include a connecting column vertically inserted and fixed in the pressure strip and a pressing head concentrically fixed at the lower end of the connecting column; the ends of the pressing heads in the two buffering clamps respectively cooperate with the upper ends of the two alignment columns.

4. A checking fixture for an automobile engine mounting bracket according to claim 1, characterized in that: The second clamping unit also includes a first L-shaped block, a third cushion block and a second L-shaped block; one end of the first L-shaped block is vertically fixed on the movable frame and can be laterally adjusted to a front-to-rear fixed position, the third cushion block is fixed on the movable frame and can be laterally adjusted to a left-to-right fixed position and longitudinally adjusted to an up-and-down fixed position and is located to the right of the first L-shaped block, and one end of the second L-shaped block is vertically fixed on the third cushion block and can be laterally adjusted to a front-to-rear fixed position.

5. A checking fixture for an automobile engine mounting bracket according to claim 4, characterized in that: The second clamping unit also includes a fourth pad, a third L-shaped clamping block and a clamping seat. The fourth pad is fixed on the movable frame and can be adjusted laterally to a left-right fixed position and longitudinally to an up-and-down fixed position and is located to the right of the third pad; one end of the third L-shaped clamping block is vertically fixed on the fourth pad and can be adjusted laterally to a front-and-back fixed position. The clamping seat is fixed on the fourth pad and can be adjusted laterally to a front-and-back fixed position and is located between the rectangular clamping block and the second support block.

6. A checking fixture for an automobile engine mounting bracket according to claim 5, characterized in that: The top of the first supporting block and the top of the second supporting block are respectively formed with a first positioning inclined surface and a second positioning inclined surface which are arranged higher in the front and lower in the back. The first positioning inclined surface and the second positioning inclined surface are also respectively fixed with a first positioning pin and a second positioning pin which are arranged perpendicular to the first positioning inclined surface and the second positioning inclined surface. The other end of the L-shaped pressing block cooperates with the end of the first positioning pin, and a positioning notch which cooperates with the end of the second positioning pin is provided at the lower corner of the end of the clamping seat; a plurality of second positioning protrusions which are perpendicular to the first positioning inclined surface are also formed upward on the first positioning inclined surface.

7. A checking fixture for an automobile engine mounting bracket according to claim 3, characterized in that: A countersunk hole is opened at the center of the root of the pressure head, and the lower end of the connecting column is inserted and fixed in the countersunk hole. A through hole is opened between the center of the bottom surface of the countersunk hole and the outer wall of the end of the pressure head; the through holes on the pressure heads in the two buffer tighteners respectively cooperate with the upper ends of the alignment columns in the two alignment units.

8. A checking fixture for an automobile engine mounting bracket according to claim 7, characterized in that: A vertically distributed buffer spring is also embedded inside the lower end of the connecting column, and the end of the buffer spring extends below the connecting column. The outer diameter of the buffer spring is larger than the inner diameter of the through hole so that the end of the buffer spring is tightly pressed against the bottom surface of the countersunk hole.

9. The inspection fixture for automobile engine mounting bracket according to claim 1, characterized in that: A vertically arranged guide rod is also inserted on the top of the rectangular pressing block, and the upper end of the guide rod is fixed on the carrier plate.

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