Engine tray with bayonet lifting device

Abstract

The present invention discloses an engine tray with a bayonet lifting device, comprising a bottom plate, a top plate, an engine support device, a positioning pin, a connecting shaft, a first thrust bearing, and a bayonet lifting device, wherein the bayonet lifting device comprises a second thrust bearing, a connecting rod mechanism, and a lifting mechanism, wherein the diameter of the second thrust bearing is greater than the diameter of the first thrust bearing, and the two are coaxial; the height of the second thrust bearing is lower than that of the first thrust bearing, the inner side of the thrust washer on the second thrust bearing is fixed with the lifting mechanism, and the outer side is hinged with the connecting rod mechanism; the movement of the connecting rod mechanism enables the second thrust bearing to reciprocate within a certain range; and a lifting mechanism is correspondingly arranged for each positioning pin. The present invention has the advantages of compact structure, convenient use, and improved work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of engine accessory assembly, in particular to an engine tray with a bayonet jacking device. Background Art

[0002] Currently, when installing an engine on an assembly line, it is necessary to install parts on the engine. However, the engine is placed on a pallet, which makes it difficult to turn the engine. As a result, when assembling the accessories, two workers need to stand on both sides of the assembly line to work together, which restricts the flow of workers.

[0003] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0004] The invention aims to provide an engine tray which has a compact structure, is easy to use and improves working efficiency.

[0005] Preferably, the present invention may also have the following technical features:

[0006] An engine tray with a bayonet lifting device comprises a bottom plate, a top plate, an engine supporting device, a locating pin, a connecting shaft, and a first thrust bearing, wherein the top plate is rotatably arranged above the bottom plate through the connecting shaft; the engine supporting device is also arranged on the top plate; the locating pin is movably arranged on the top plate, and the bottom plate is provided with a plurality of connecting holes corresponding to the positions of the locating pins; the first thrust bearing is coaxial with the connecting shaft, and its upper and lower end faces are respectively abutted against the top plate and the bottom plate, and also comprises a bayonet lifting device, wherein the bayonet lifting device comprises a second thrust bearing, a connecting rod mechanism, and a lifting mechanism, wherein the diameter of the second thrust bearing is larger than that of the first thrust bearing, and the two are coaxial; the height of the second thrust bearing is lower than that of the first thrust bearing, and the lifting mechanism is fixed to the inner side of the thrust washer thereon, and the connecting rod mechanism is hinged to the outer side; the movement of the connecting rod mechanism causes the second thrust bearing to reciprocate within a certain range; a lifting mechanism is correspondingly arranged for each locating pin.

[0007] Furthermore, the lower end surface of the positioning pin is provided with an open clearance groove along the axial direction; both sides of the clearance groove are arc surfaces, and the center of the arc surface is the axis center of the connecting shaft.

[0008] Furthermore, the lifting mechanism includes a connecting rod and a cambered trapezoidal piece fixed to the end of the connecting rod; the other end of the connecting rod is fixed to the inner side of the upper thrust washer of the second thrust bearing; the position of the cambered trapezoidal piece corresponds to the clearance groove, and its curvature matches the camber of the clearance groove.

[0009] Furthermore, the connecting rod is an L-shaped structure, the upper end of which is fixedly connected to the second thrust bearing, and the bent end of the lower end is fixed with the arc trapezoidal piece; the lower end of the connecting rod is spaced apart from the bottom plate, so that when the top surface of the arc trapezoidal piece clamps the positioning pin, the lower end surface of the positioning pin is spaced apart from the lower end of the connecting plate.

[0010] Furthermore, the lower end of the connecting rod is fixed to the lower part of the arc-surface trapezoidal piece.

[0011] Furthermore, the connecting rod mechanism includes a second guide rail, a first connecting rod, and a second connecting rod. One end of the first connecting rod is hinged to the outer side of the upper thrust washer of the second thrust bearing, and the other end is hinged to one end of the second connecting rod; the middle part of the second connecting rod is fixed on the slider of the second guide rail.

[0012] Furthermore, the connecting rod mechanism also includes a first limit block and a second limit block, and the first limit block and the second limit block are respectively arranged at two ends of the second connecting rod.

[0013] Furthermore, the second guide rail is perpendicular to the second thrust bearing.

[0014] Furthermore, after the positioning pin is inserted into the connecting hole, the top of the positioning groove is higher than the plane of the bottom plate.

[0015] Furthermore, the top of the clearance groove is provided with a chamfered corner or a rounded corner with a slope similar to that of the two ends of the positioning pin.

[0016] Compared with the prior art, the beneficial effects of the present invention include: by providing a bayonet pin lifting device, the efficiency of pulling out the pin and rotating the tray is improved, and the operator can assemble the four sides of the engine in the same place; by using a connecting rod mechanism to drive the second thrust bearing, the locating pin can be lifted without observing the state of the locating pin, and there is no need to take the locating pin out of the first locating hole, and the operation process is simple; the structural design of the lifting mechanism can install the arc-surface trapezoidal piece as close to the base plate as possible, saving assembly space, and effectively avoiding interference between the arc-surface trapezoidal piece and the locating pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a top view of the present invention.

[0019] Figure 3 It is a side structural schematic diagram of the present invention.

[0020] Figure 4 It is a schematic diagram of the installation of the positioning pin of the present invention.

[0021] Figure 5 It is a schematic diagram of the connection between the shaft sleeve and the base plate of the present invention.

[0022] Figure 6 It is a schematic structural diagram of the jacking device of the present invention.

[0023] Figure 7 It is a position relationship diagram of the jacking positioning pins of the arc-surface trapezoidal piece of the present invention.

[0024] Figure 8 yes Figure 7 Schematic side view of . DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0026] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically stated.

[0027] like Figure 1-3An engine tray with a pin jacking device is shown, which includes a bottom plate 1, a top plate 2, an engine support device, a guide rail 15, a positioning pin 4, and a connecting shaft. A deep groove ball bearing 5 is fixed in the middle of the top plate 2. The upper end of the connecting shaft is connected to the deep groove ball bearing 5, and the lower end is fixed in the middle of the bottom plate 1, so that the top plate 2 is rotatably connected to the bottom plate 1. There are 4 first positioning holes for assembling the positioning pin 4 on the top plate 2, and the 4 first positioning holes are evenly distributed in a ring. A connecting hole 14 corresponding to the first positioning hole is opened on the bottom plate 1. In this way, when it is necessary to adjust the horizontal angle of the top plate 2, rotate the top plate 2 to align the first positioning hole of the top plate 2 with the connecting hole of the bottom plate 1, and then insert the positioning pin 4 into the first positioning hole and the connecting hole 14 for positioning, and the horizontal angle of the top plate 2 can be adjusted. Taking the upper surface of the top plate 2 as the installation surface, 3 of the engine support devices are arranged in a "pin" shape and are respectively slidably arranged on the installation surface of the top plate 2 through the guide rail 15. Specifically, the engine support device includes sliding plates (10, 16), support feet (6, 12), and pins (8, 11). The sliding plates (10, 16) are fixed on the guide rail 15 by bolts, and the support feet (6, 12) are vertically fixed on the sliding plates (10, 16) by bolts. The pins (8, 11) are movably installed on the sliding plates (10, 16). The sliding plates (10, 16) are provided with second positioning holes for assembling the pins (8, 11), and a number of pin holes corresponding to the positions of the pins (8, 11) are arranged on the moving tracks of the pins (8, 11). In this way, after adjusting the support feet according to the support requirements of the engine, the lower end of the pin can be inserted into the corresponding pin hole to position the sliding plates (10, 16). The top plate 2 and the bottom plate 1 are rotatably connected through the bearing 5. When supporting the engine, it cannot be guaranteed that the operator can press the center of the engine on the bearing 5, so that the bearing 5 and the connecting shaft are subjected to bending stress, which poses a safety hazard. To increase the stability of the top plate 2, a first thrust bearing 13 is provided between the top plate 2 and the bottom plate 1. The upper and lower end faces of the first thrust bearing 13 are respectively fixedly connected to the top plate 2 and the bottom plate 1, improving the stiffness and balance of the top plate 2, and effectively avoiding the risk of the top plate 2 tilting due to the center of gravity shifting, resulting in the cylinder block tipping over.

[0028] More specifically, the 3 engine support devices are respectively a first support device, a second support device, and a third support device. The first support device includes a first sliding plate 16, a first support foot 12, a first pin 11, and a guide rail 15. The first sliding plate 16 is a square plate, and its two ends are respectively fixed on the guide rail 15. The first pin 11 is movably arranged in the middle of the first sliding plate and can move in a direction close to or away from the top plate 2. The first support feet 12 are respectively arranged on both sides of the first pin, and the first support feet 12 are located directly above the guide rail 15 to prevent the first sliding plate 16 from being deformed under pressure.

[0029] The second supporting device comprises a second sliding plate 10, a second supporting foot 6, a second bayonet 8, and a guide rail 15. The second sliding plate 10 is in a "Z"-shaped structure and is fixed to the guide rail 15 by bolts. The second supporting foot 6 is fixed to the upper surface of the second sliding plate 10, and the top surface of the second supporting foot 6 is provided with an engine foot positioning pin 7. The second bayonet 8 is movably mounted at the end of the second sliding plate 10.

[0030] Specifically, for ease of use, the first bayonet pin 11, the second bayonet pin 8, and the positioning pin 4 have the same structure and are spring pin structures. Under normal conditions, the first bayonet pin 11, the second bayonet pin 8, and the positioning pin 4 all have a tendency to move toward the bottom plate 1 under the action of elastic force. The fixing method of the positioning pin 4 is used as an example to explain how the positioning pin 4 realizes the characteristics of an elastic pin. Specifically, refer to Figure 4 , including a sleeve 81, a screw cover 87, a spring 83, and a handle 84. The sleeve 81 is welded and fixed to the outside of the first positioning hole, and its inner diameter is the same as the diameter of the first positioning hole. The inner wall of the sleeve 81 is provided with a stop groove 82 along its axial direction, and the stop groove 82 extends all the way to the lower part of the top plate 2. Correspondingly, the side wall of the positioning pin 4 is provided with a stop column 85 that matches the width of the stop groove 82, and the upper part of the positioning pin 4 is a stepped column structure. When installing the positioning pin 4, the positioning pin 4 is inserted along the upper end of the sleeve 84, and the stop column 85 is inserted into the stop groove 82, so that the stop column 85 abuts against the bottom of the stop groove 82. Then, the spring 83 is inserted into the stepped column part of the upper part of the positioning pin 4, and the screw cover 87 is screwed into the top of the sleeve 81 by threaded connection, and the middle part of the screw cover 87 is provided with a through hole, so that the upper part of the positioning pin 4 passes through the through hole and straightens to the outside of the screw cover 87. Thus, after tightening the screw cap 87, the lower end of the spring 83 abuts against the stepped surface 88 on the upper part of the positioning pin 4, and the upper end abuts against the screw cap 87, so that the spring 83 generates elastic force on the positioning pin 4, and the positioning pin 4 tends to move toward the bottom plate 1 under the action of the elastic force. At the same time, in order to facilitate lifting the positioning pin 4, a handle 84 is threadedly connected to the top of the positioning pin 4. The locking structure of the first bayonet 11 and the second bayonet 8 is basically the same as that of the positioning pin 4, except that the top plate is replaced with the corresponding first sliding plate 16 and second sliding plate 10.

[0031] Anti-collision blocks 3 are respectively arranged at the front and rear ends of the bottom plate 1 to mitigate the impact. In order to facilitate the movement of the pallet, a lifting ring is threadedly connected around the top plate.

[0032] Reference Figure 6-8, specifically to the improvement and application of this application. Although it can basically achieve the production requirements, it is necessary to take out the locating pin 4 when rotating the top plate 2, and then insert the locating pin 4 into the slot after the top plate 2 is rotated into place. Since the locating pin 4 needs to be taken out when rotating the top plate 2, in order to avoid interference of the engine with the removal of the locating pin 4, the bottom plate 1 and the top plate 2 need to be enlarged, but the space of the engine assembly line is limited, and it is still inconvenient to take and place the locating pin 4 after enlarging the bottom plate 1 and the top plate 2. In order to solve the disadvantage of the inconvenience of taking and placing the locating pin 4, a set of card pin lifting device is designed and the structure of the locating pin 4 is improved, so that the locating pin 4 can be lifted without observing the state of the locating pin 4, and there is no need to take the locating pin 4 out of the first locating hole.

[0033] Specifically, the bayonet lifting device is arranged between the bottom plate 1 and the top plate 2, and includes a second thrust bearing 51, an arc-surface trapezoidal sheet 53, a connecting rod mechanism, and a connecting rod 52. The lower thrust washer of the second thrust bearing 51 is fixed to the bottom plate 1, and the end face of the upper thrust washer is spaced from the top plate 2, and the second thrust bearing 51 is coaxial with the deep groove ball bearing 5. The second thrust bearing 51 is coaxial with the first thrust bearing 13, and its diameter is larger than the diameter of the first thrust bearing 13, so that the positioning pin 4 is located between the first thrust bearing 13 and the second thrust bearing 51, and the height of the second thrust bearing 51 is lower than the height of the first thrust bearing 13, so as to avoid the second thrust bearing 51 interfering with the rotation of the top plate 2. The connecting rod mechanism is hinged to the upper thrust washer of the second thrust bearing 51, and the connecting rod mechanism is used to make the second thrust bearing 51 rotate back and forth within a certain range. The connecting rod is an L-shaped structure, one end of which is fixed to the upper thrust washer of the second thrust bearing 51, and the other end is fixed to the arc-surface trapezoidal piece 53. Correspondingly, the lower part of the positioning pin 4 is provided with an arc-surface clearance groove 86 that runs through both sides thereof, and the arc-surface clearance groove 86 is arranged along its axial direction from the lower end surface of the positioning pin 4. In actual use, the positions of the arc-surface trapezoidal piece 53 and the arc-surface clearance groove 86 correspond, and the arc diameters of the two are the same. In order to avoid excessive friction between the arc-surface trapezoidal piece 53 and the arc-surface clearance groove 86, the width of the arc-surface clearance groove 86 is designed to be greater than the thickness of the arc-surface trapezoidal piece 53. The connecting rod 52 is made into an L-shaped structure so that the bottom of the arc-surface trapezoidal piece 53 is as close to the base plate 1 as possible. In order to reduce the friction between the clearance groove 86 and the arc-surface trapezoidal piece 53, the position where the top of the clearance groove 86 contacts the arc-surface trapezoidal piece 53 is designed to be chamfered. The lower end surface of the positioning pin 4 is made into a spherical surface, which is convenient for quick insertion into the connecting hole 14.

[0034] More specifically, the arc-shaped trapezoidal piece 53 is arranged on the inner side of the second thrust bearing 51, with the middle height and inclined toward both ends, presenting an isosceles trapezoidal or approximately isosceles trapezoidal structure. In order to adapt to the situation where the positioning pin 4 makes a circular motion, the side surface of the arc-shaped trapezoidal piece 53 is set to an arc surface with the same diameter as the circumference 54 made by the positioning pin 4. In actual use, the positioning pin 4 moves toward the base plate 1 under the elastic force of the spring 83. When the positioning pin 4 is inserted into the connecting hole 14 of the base plate 1 and is in place, the top of the clearance groove 86 of the positioning pin 4 is higher than the horizontal plane of the base plate 1. In this way, when the connecting rod mechanism is driven to rotate the second thrust bearing 51, the arc-shaped trapezoidal piece 53 can be inserted into the clearance groove 86, thereby slowly pushing the positioning pin 4 out of the connecting hole 14 of the base plate 1. In order to prevent the connecting rod 52 from interfering with the movement of the positioning pin 4, the connecting rod 52 is fixed in the middle of the bottom of the arc-surface trapezoidal piece 53, and when the positioning pin 4 is located on the top surface of the arc-surface trapezoidal piece 53, the lower end of the positioning pin 4 is above the horizontal plane of the connecting rod 52 (such as Figure 7 , Figure 8 As shown), in this way, the connecting rod 52 can be effectively prevented from interfering with the positioning pin 4.

[0035] In this embodiment, four connection holes 14 are provided, and four arc-surface trapezoidal pieces are provided to cooperate with the four connection holes 14, respectively, so that no matter which connection hole 14 the positioning pin 4 is inserted into, it can be pushed out of the connection hole 14 by the arc-surface trapezoidal piece 53. Since a clearance groove 86 is provided on the positioning pin 4, two positioning pins 4 are provided to cooperate with each other in order to enhance the function of the positioning pin 4 in stopping the rotation of the top plate 2.

[0036] In addition, the present embodiment can adopt various forms of connecting rod mechanisms to drive the second thrust bearing 51 to reciprocate within a certain range, the purpose of which is to make the arc-surface trapezoidal sheet 53 move away from or close to the adjacent connecting hole 14 through the reciprocating motion of the second thrust bearing 51, so as to push the positioning pin 4 out of the connecting hole 14. Specifically in this embodiment, the connecting rod mechanism includes a second guide rail 64, a first connecting rod 61, a second connecting rod 63, a first limit block 62, and a second limit block 65. One end of the first connecting rod 61 is hinged to the outer side of the upper thrust washer of the second thrust bearing 51, and the other end is hinged to the second connecting rod 63. The middle part of the second connecting rod 63 is welded and fixed to the slider of the second guide rail 64. By moving the slider back and forth on the stroke of the second guide rail 64, the second connecting rod 63 drives the first connecting rod 61 to pull the second thrust bearing 51 to reciprocate within a certain range. In order to enable the operator to accurately know that the positioning pin 4 has been completely pushed out of the connecting hole 14, the first limit block 62 and the second limit block 65 are welded and fixed on the second connecting rod 63, and the second guide rail 64 is located between the first limit block 62 and the second limit block 65. Pull the second connecting rod 63, when the first limit block 62 moves toward the direction of the second guide rail 64, the arc-surface trapezoidal piece 53 gradually approaches the adjacent connecting hole 14, thereby slowly pushing out the positioning pin 4; when the second limit block 65 moves toward the direction of the second guide rail 64, the arc-surface trapezoidal piece 53 gradually moves away from the connecting hole 14. The second guide rail 64 is fixed on the bottom plate 1, which is easy to operate and does not interfere with the operation of the production line. The second guide rail is perpendicular to the second thrust bearing 51.

[0037] Those skilled in the art will appreciate that numerous variations to the above description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0038] Although what is considered as exemplary embodiments of the present invention has been described and described, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt specific situations to the teachings of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments and their equivalents that fall within the scope of the present invention.

Claims

1. An engine tray with a bayonet lifting device, comprising a bottom plate, a top plate, an engine support device, a positioning pin, a connecting shaft, and a first thrust bearing, wherein the top plate is rotatably arranged above the bottom plate through the connecting shaft; the engine support device is also arranged on the top plate; the positioning pin is movably arranged on the top plate, and the bottom plate is provided with a plurality of connecting holes corresponding to the positions of the positioning pins; the first thrust bearing is coaxial with the connecting shaft, and its upper and lower end surfaces are respectively in contact with the top plate and the bottom plate, and is characterized in that: It also includes a bayonet pin lifting device, which includes a second thrust bearing, a connecting rod mechanism, and a lifting mechanism. The diameter of the second thrust bearing is greater than that of the first thrust bearing, and the two are coaxial. The height of the second thrust bearing is lower than that of the first thrust bearing, and the lifting mechanism is fixed to the inner side of the thrust washer on the second thrust bearing, and the connecting rod mechanism is hinged to the outer side. The movement of the connecting rod mechanism enables the second thrust bearing to reciprocate within a certain range. A lifting mechanism is correspondingly arranged for each positioning pin. The connecting rod mechanism comprises a second guide rail, a first connecting rod and a second connecting rod; one end of the first connecting rod is hinged to the outer side of the upper thrust washer of the second thrust bearing, and the other end is hinged to one end of the second connecting rod; the middle part of the second connecting rod is fixed on the slider of the second guide rail; The lower end surface of the positioning pin is provided with an open clearance groove along the axial direction; the two sides of the clearance groove are arc surfaces, and the center of the arc surface is the axis center of the connecting shaft; The lifting mechanism includes a connecting rod and an arc-shaped trapezoidal piece fixed to the end of the connecting rod; the other end of the connecting rod is fixed to the inner side of the upper thrust washer of the second thrust bearing; the position of the arc-shaped trapezoidal piece corresponds to the clearance groove, and its curvature matches the arc surface of the clearance groove.

2. An engine tray with a bayonet lifting device as claimed in claim 1, characterized in that: The connecting rod is an L-shaped structure, the upper end of which is fixedly connected to the second thrust bearing, and the bent end of the lower end is fixed with the arc trapezoidal piece; the lower end of the connecting rod is spaced apart from the bottom plate, so that when the top surface of the arc trapezoidal piece clamps the positioning pin, the lower end surface of the positioning pin is spaced apart from the lower end of the connecting plate.

3. An engine tray with a bayonet lifting device as claimed in claim 2, characterized in that: The lower end of the connecting rod is fixed to the lower part of the arc-surface trapezoidal piece.

4. The engine tray with a bayonet lifting device according to claim 1, characterized in that: The connecting rod mechanism further includes a first limit block and a second limit block, and the first limit block and the second limit block are respectively arranged at two ends of the second connecting rod.

5. The engine tray with a bayonet lifting device according to claim 1, characterized in that: The second guide rail is perpendicular to the second thrust bearing.

6. The engine tray with a bayonet lifting device according to claim 1, characterized in that: After the positioning pin is inserted into the connecting hole, the top of the positioning groove is higher than the plane of the bottom plate.

7. An engine tray with a bayonet lifting device as claimed in claim 6, characterized in that: The top of the clearance groove is provided with a chamfered angle or a rounded angle with a slope similar to that of the two ends of the positioning pin.

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