Multifunctional tray applied to offline test board and tray positioning and supporting structure

Abstract

The utility model discloses a multifunctional tray applied to an offline test board and a tray positioning and supporting structure. The supporting structure comprises a tray positioning and supporting seat and a tray capable of ascending and descending in the height direction. Four mounting holes are formed in the lower end of the tray, a zero-point positioning pin is mounted at each mounting hole, or two abutting pieces can be mounted at two diagonal mounting holes, and two positioning pin sleeves are mounted on the other two mounting holes; the tray positioning and supporting seat comprises a rectangular fixing seat, and assembling holes corresponding to the mounting holes one to one are formed in the four corners of the upper end of the fixing seat. A zero-point clamping positioning disc or supporting disc is detachably installed at each assembling hole, a positioning rod is arranged in the middle of each of two supporting discs located at the opposite angles, two positioning pins are arranged in the middle of the other two supporting discs, the upper ends of the positioning rods and the upper ends of the positioning pins extend out of the upper end faces of the supporting discs, and the lower ends of the positioning rods and the upper ends of the positioning pins extend out of the upper end faces of the supporting discs. And the positioning device can be driven by a lifting mechanism to lift and position.

Description

Technical Field

[0001] The utility model relates to the field of automobile starting assembly testing, in particular to a multifunctional tray used in an offline test bench and a tray positioning support structure. Background Art

[0002] Hybrid transmission assembly, electric drive powertrain, and reducer are key components in the vehicle transmission system. The vehicle manufacturer has high requirements for their performance and reliability. Accurately measuring the performance data of the powertrain is the basis for ensuring the continuous optimization of the transmission design during the development process. Therefore, during the development of the powertrain, the powertrain bench test with various types of performance tests is an indispensable and important link.

[0003] In recent years, with the rapid development of new energy vehicles, the gearboxes matched with their powertrains have shown a trend of high speed development, and various structural forms of powertrains have also emerged in an endless stream. At present, the Chinese patent with application number 201910590145.4 discloses a new energy vehicle powertrain offline test bench, including a control device and a test bench, the left and right sections of the test bench are respectively provided with movable loading mechanisms, and the loading mechanism is connected to the output shaft and input shaft of the powertrain test piece through the spline of the output shaft of the loading mechanism during the test; the middle section of the test bench constitutes a detection frame, and the detection frame is sequentially provided with a test mechanism for collecting test data of the powertrain test piece, a tray moving in a direction perpendicular to the moving direction of the loading mechanism, and a positioning locking mechanism for locking the tray from top to bottom, the positioning locking mechanism includes a zero point positioning pin arranged at the bottom of the tray and a base arranged on the detection frame and can be raised and lowered, and a plurality of positioning members are arranged on the base, and the positioning member is provided with a positioning pin hole for clamping the zero point positioning pin. The pallet is pre-installed with the powertrain test piece and transported to the inspection frame via two parallel conveyor line rollers. When the pallet is transported to the inspection frame, the base in the positioning locking mechanism descends, and the zero-point positioning pin at the bottom of the pallet falls into the positioning pin hole of the positioning piece on the base, and is adapted and connected to clamp the pallet. At this time, the left and right loading motors move to adapt and connect with the powertrain test piece.

[0004] In addition to the above-mentioned clamping method for the assembly to be tested, the applicant is considering designing an offline test bench with a pallet positioning support at the lower end and a pressing mechanism at the upper end to press and position the assembly to be tested on the pallet. At the same time, the offline test bench can also meet the clamping method for zero-point positioning and clamping of the pallet. However, in the existing offline test bench, the space for the workstation to be tested is relatively small. If the above-mentioned two clamping structures are to be met at the same time, a pallet and a pallet positioning support seat that can not only clamp and position the pallet at zero point, but also support and position the pallet are urgently needed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a multifunctional pallet and a pallet positioning support structure for use in an offline test bench, so as to solve the problem that the clamping and positioning method of the assembly to be tested in the existing offline test bench is relatively single, and there is a lack of a pallet positioning support seat that can meet the requirements of downward pressing and tightening, and at the same time can position the pallet at the zero point.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A multifunctional tray used in an offline test bench includes a tray, and four rectangularly distributed mounting holes are provided on the lower end surface of the tray, and a zero-point positioning pin can be detachably installed at each mounting hole, or two abutments can be detachably installed at two of the diagonal mounting holes, and two positioning pin sleeves can be detachably installed on the other two mounting holes, and the abutments are cylindrical, and the longitudinal length of the abutments is consistent with the axial length of the positioning pin sleeve. In this way, the mounting holes provided on the tray can be used to install the zero-point positioning pin, and can also be used to install the abutments and positioning pin sleeves. Therefore, in the application, according to the specific situation, it is selected to install the zero-point positioning pin or the abutments and positioning pin sleeves. When the zero-point positioning pin is selected, it can be used to cooperate with the zero-point clamping positioning disk on the tray positioning support seat to achieve zero-point clamping. When the abutments and positioning pins are selected, they can be used to cooperate with the upper end of the tray positioning support seat to ensure that the tray is connected to the tray positioning support seat.

[0008] Furthermore, at least one anti-collision block is provided on both sides of the pallet, and the anti-collision block is elastic. In this way, after the anti-collision block is provided, during the application process, the left and right sides of the pallet correspond to the line rollers on both sides respectively, so that during the conveying process, the anti-collision block can be used to prevent the pallet from being damaged by friction and collision between the two sides and the roller during the conveying process. The anti-collision block is elastic and can have a certain buffer deformation after the collision.

[0009] Furthermore, a rotating wheel is installed at each of the four corners of the bottom of the tray, the outer side of the rotating wheel extends out of the side edge of the tray, and can rotate under the action of external force. In this way, the rotating wheel can effectively ensure that the contact surface between the tray and the wire roller is smaller during the transportation process, and during transportation, the rotating wheel rotates after rubbing against the side edge, reducing friction, and the transportation is smoother and faster.

[0010] Furthermore, a plurality of wear-resistant plates can be detachably mounted on the lower end surface of the tray and along the four sides of the tray, and the rotating wheel is mounted between the tray and the corresponding wear-resistant plates. In this way, after the wear-resistant plates are arranged, the wear-resistant plates can be directly replaced after long-term use, which can reduce the maintenance cost of the tray.

[0011] A pallet positioning support structure used in an offline test bench comprises a pallet positioning support seat installed at a test station of a bench base, and a pallet located above the pallet positioning support seat and capable of being lifted and lowered in height direction. The pallet is as described above, and the pallet positioning support seat comprises a rectangular fixing seat, the middle of which has a cavity, and an assembly hole is provided at each of the four corners of the upper end of the fixing seat. The four assembly holes are distributed in a rectangular shape and correspond to the mounting holes one by one, and the center lines overlap with the center lines of the mounting holes; a zero-point clamping positioning plate or a support plate can be detachably installed at each assembly hole, and the zero-point clamping positioning plate can be matched with the zero-point positioning pin on the bottom of the pallet to lock and fix the pallet on the fixing seat; four In the support plate, a positioning rod is provided in the middle of two diagonally opposite support plates, and two positioning pins are provided in the middle of the other two support plates, and the upper ends of the positioning rods and the positioning pins are extended out of the upper end surface of the support plate; when the tray is lowered, the two positioning rods correspond to and contact the abutment members on the tray, and the two positioning pins are placed in the two positioning pin sleeves on the tray; a lifting mechanism is installed in the cavity of the fixed seat, which can drive the two positioning rods and the two positioning pins to move down and lift synchronously. When the positioning rods and the positioning pins move downward under the drive of the lifting mechanism, and the upper ends are lower than the support plates, the two abutment members and the two positioning pin sleeves at the lower end of the tray are respectively sleeved in the corresponding support plates for positioning, and the lower end surface of the tray is abutted against the four support plates. In this way, the upper end of the tray positioning support seat can be installed with a zero-point clamping positioning plate, which cooperates with the zero-point positioning pin on the tray to form a locking positioning of the tray. This positioning method of the tray can effectively ensure that the tray will not shake or shift during the test process. At the same time, the pallet positioning support seat can also be installed with a support plate. The positioning rod and positioning pin arranged in the support plate can cooperate with the abutment and positioning pin sleeve at the bottom of the pallet. When the pallet moves down, it first contacts with the positioning rod and positioning pin, and then after the positioning rod and positioning pin move down, they are placed on the support plate. The assembly pallet is supported by the plane formed by the upper end surface of the support plate, and the assembly pallet is positioned by the abutment and positioning pin sleeve on the assembly pallet and the support plate. The positioning rod and positioning pin are distributed in a rectangular shape and are respectively placed at the four corners of the fixed seat, so as to form a stable support for the assembly pallet. At the same time, this method of first using point and surface support, and then surface-to-surface contact support, can quickly position with the assembly pallet, ensuring that the assembly pallet support is more stable. The zero-point clamping positioning plate and the fixed seat, as well as the support plate and the fixed seat can be detachably connected, and the assembly holes are in the same position, so that one fixed seat can meet the installation of two positioning structures. The mounting holes on the pallet correspond to the assembly holes one by one, and the centers are consistent, which can effectively ensure that the pallet and the fixed seat can be quickly aligned, ensuring that the same pallet and fixed seat can be installed with both the zero-point clamping structure and the pallet support structure.

[0012] Furthermore, the positioning rod and the positioning pin are both sleeved and fixed on a lifting positioning plate, and the lifting positioning plate is placed in the hollow inner cavity of the fixed seat. A lifting plate with a tilted top bearing at the lower end is fixed in the middle of the lower end of the lifting positioning plate. A tilted top slider in contact with its tilted top bearing is provided under the lifting plate. The upper end surface of the tilted top slider is composed of an upper plane, a lower plane and an inclined surface connecting the upper plane and the lower plane. A push mechanism for controlling the left and right sliding and positioning of the tilted top slider is provided on one side of the tilted top slider. When the tilted top bearing is on the upper plane of the tilted top slider, each positioning rod and positioning pin are extended out of the corresponding support plate. When the tilted top slider moves horizontally under the action of the push mechanism, the tilted top bearing contacts the inclined surface of the tilted top slider, and after the tilted top slider continuously slides, it continues to descend along the inclined surface of the tilted top slider until the positioning rod on the lifting positioning plate descends to the support plate for positioning. In this way, the positioning rod and the positioning pin are both fixed on the rectangular positioning plate, which can ensure that the positioning rod and the positioning pin can be lifted and lowered at the same time, and the lifting height is consistent. The lifting positioning plate contacts the inclined top slider, and through the horizontal movement of the inclined top slider, it rises and falls, thereby driving the positioning rod and positioning pin fixed thereto to rise and fall, so that the positioning rod and positioning pin extend out of the support plate and connect with the lower end of the pallet. At the same time, after the positioning rod and positioning pin are lowered, they are placed in the support plate, and the upper end of the support plate supports the assembly pallet. The setting structure of the inclined top slider is ingenious. When the plane contacts the inclined top bearing on the rectangular positioning plate, the positioning rod and positioning pin extend out of the support plate, and the height does not change. When the inclined top slider is pushed, the inclined top bearing will contact the inclined surface of the inclined top slider. When in contact with the inclined surface, the inclined top bearing rolls under the action of friction, and the inclined top bearing moves from the high-position component to the low position along the contact surface of the inclined top slider, so that the positioning rod and positioning pin also move down to achieve descent.

[0013] Furthermore, a horizontally arranged inclined top linear slide rail is provided in the fixed seat, and the lower end of the inclined top slider slides in sliding engagement with the inclined top linear slide rail; four guide cylinders are also provided in the fixed seat, and a guide rod is fixedly connected to the lower ends of the two positioning rods and the two positioning pins, and the guide rod is sleeved in the guide cylinder and can move up and down along the guide cylinder. In this way, after the inclined top slider cooperates with the inclined top linear slide rail, the inclined top linear slide rail can limit the sliding path of the inclined top slider, so that it slides in a straight line, and at the same time, the four guide cylinders provided can guide the positioning rod and the positioning pin, so that their upward movement is relatively stable.

[0014] Furthermore, the pushing mechanism is a pushing cylinder installed on the outside of the fixed seat, and the cylinder rod of the pushing cylinder passes through the side plate of the fixed seat and is fixedly connected to the inclined top slider. In this way, the cylinder runs more stably, and the stroke can be accurately controlled, which can effectively ensure the moving height of the positioning rod and the positioning pin, and extend out of the fixed seat after rising, and after falling, it can effectively ensure that the abutment and positioning pin sleeve on the tray can cooperate with the corresponding support plate center and be placed in the support plate without interfering with the positioning rod and the positioning pin.

[0015] Furthermore, the fixing seat is mainly composed of a bottom plate, four side plates and a top plate, on which a mounting plate can be detachably mounted, the assembly holes are arranged on the mounting plate, and four through holes corresponding to the assembly holes are arranged on the top plate, and the positioning rods and positioning pins are sleeved in the assembly holes and through holes. In this way, the mounting plate arranged on the fixing seat is mainly used to install the zero-point clamping positioning plate or the support plate,

[0016] Furthermore, the bottom plate is extended out of the side plate on all sides, and a plurality of fixing holes are arranged at intervals on the extended portion of the bottom plate. In this way, after the bottom plate is extended, the fixing holes arranged on the extended portion can facilitate the fixing of the fixing seat on the stand base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the bottom of the tray in Example 1;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the tray positioning support seat in Example 1;

[0019] Figure 3 This is a diagram of the initial state when the positioning rod and the positioning pin extend out of the support plate after the fixing seat is hidden in Example 1;

[0020] Figure 4 This is a schematic diagram of the structure after the fixing seat is hidden and the positioning rod and the positioning pin are moved downward in Example 1;

[0021] Figure 5 This is a schematic diagram of the structure of the bottom of the tray in Example 2;

[0022] Figure 6 This is a schematic diagram of the installation structure of the zero-point clamping positioning plate and the mounting plate in Example 2. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] like Figure 1-Figure 4As shown, the multifunctional tray 1 and tray positioning support structure applied to the offline test bench provided in the present embodiment include a tray positioning support seat installed at the tested station of the bench base, and a tray 1 located above the tray positioning support seat and capable of being lifted and lowered in the height direction; four mounting holes distributed in a rectangular shape are provided on the lower end surface of the tray 1, two of which are diagonally located at the mounting holes and two abutments 12 are detachably installed, and two positioning pin sleeves 11 are detachably installed on the other two mounting holes, the abutments 12 are cylindrical, and the longitudinal length of the abutments 12 is consistent with the axial length of the positioning pin sleeves 11; the tray positioning support seat includes a rectangular fixing seat 2, the fixing seat 2 has a cavity in the middle, and an assembly hole is provided at the four corners of the upper end of the fixing seat 2, the four assembly holes are distributed in a rectangular shape, corresponding to the mounting holes one by one, and the center line overlaps with the center line of the mounting hole; in each A support plate 3 can be detachably installed at each assembly hole; among the four support plates 3, a positioning rod 4 is provided in the middle of two diagonal support plates 3, and two positioning pins 5 are provided in the middle of the other two support plates 3, and the upper ends of the positioning rods 4 and the positioning pins 5 extend out of the upper end surface of the support plate 3; when the tray 1 is lowered, the two positioning rods 4 correspond to and contact the abutment members 12 on the tray 1, and the two positioning pins 5 are placed in the two positioning pin sleeves 11 on the tray 1; a lifting mechanism that can drive the two positioning rods 4 and the two positioning pins 5 to move downward and lift synchronously is installed in the cavity of the fixed seat 2, and when the positioning rods 4 and the positioning pins 5 move downward under the drive of the lifting mechanism, and the upper ends are lower than the support plates 3, the two abutment members 12 and the two positioning pin sleeves 11 at the lower ends of the tray 1 are respectively sleeved in the corresponding support plates 3 for positioning, and the lower end surface of the tray 1 is abutted against the four support plates 3.

[0027] In a specific application, the pallet positioning support seat in this embodiment is located between two conveyor line rollers for conveying pallet 1, the measured middle position is located in the middle position of the two conveyor line rollers, and the height of the upper end surface of the pallet positioning support seat is lower than the two conveyor line rollers, so as to ensure that there is no position interference between the pallet 1 and the pallet positioning support seat. When the pallet 1 and the assembly to be measured on the pallet 1 are clamped by a pressing method, if the pallet 1 on the conveyor line roller is directly pressed down, the conveyor line roller will be deformed. Based on this, supporting the pallet 1 and the assembly to be measured by the pallet positioning support seat is the most stable way. If the positioning support seat is to support the pallet 1, the conveyor line roller needs to be able to rise and fall in the height direction, and the pallet positioning support seat can only support the pallet 1 after the conveyor line roller descends. When supporting the pallet 1, it is also necessary to ensure that during the test, the pallet 1 will not vibrate due to the vibration generated during the test, so as not to affect the effect and damage the test device, so the pallet 1 needs to be positioned.

[0028] The tray 1 is provided with a mounting hole, which can be used to install the zero-point positioning pin 13, and can also be used to install the abutment 12 and the positioning pin sleeve 11. Therefore, in the application, according to the specific situation, it is selected to install the zero-point positioning pin 13 or the abutment 12 and the positioning pin sleeve 11. When the zero-point positioning pin 13 is selected, it can be used to cooperate with the zero-point clamping positioning plate 13 on the tray positioning support seat to achieve zero-point clamping. When the abutment 12 and the positioning pin 5 are selected to be installed, they can be used to cooperate with the upper end of the tray positioning support seat to ensure that the tray 1 is connected to the tray positioning support seat. After adopting the positioning support structure in this embodiment, the tray positioning support seat can install the support plate 3, and the positioning rod 4 and positioning pin 5 arranged in the support plate 3 can cooperate with the abutment 12 and positioning pin sleeve 11 at the bottom of the tray 1. When the tray 1 moves downward, it first contacts with the positioning rod 4 and positioning pin 5, and then after the positioning rod 4 and positioning pin 5 move downward, they are placed on the support plate 3, and the assembly tray 1 is supported by the plane formed by the upper end surface of the support plate 3, and the assembly tray 1 is positioned by the abutment 12 and positioning pin sleeve 11 on the assembly tray 1 and the support plate 3. The positioning rod 4 and positioning pin 5 are distributed in a rectangular shape and are respectively placed at the four corners of the fixed seat 2, so as to form a stable support for the assembly tray 1. At the same time, this method of first using point and surface support, and then surface-to-surface contact support, can quickly position with the assembly tray 1, ensuring that the support of the assembly tray 1 is more stable. The zero-point clamping positioning plate 13 and the fixed seat 2, as well as the support plate 3 and the fixed seat 2, can be detachably connected, and the assembly holes are positioned in the same position, so that one fixed seat 2 can be installed to meet the needs of two positioning structures. The mounting holes on the tray 1 correspond to the assembly holes one by one, and their centers are consistent, so that the tray 1 and the fixed seat 2 can be quickly aligned, ensuring that the same pallet 1 and fixed seat 2 can be installed with both the zero-point clamping structure and the tray 1 support structure.

[0029] In this embodiment, the central hole diameter of the support plate 3 used to cooperate with the abutment member 12 is different from the hole diameters of the other two support plates 3, and one of the positioning pins 5 is a diamond pin and the other is a cylindrical pin. This positioning method of two holes on one side is stable. The two pin bodies are arranged on the diagonal line, which can maximize the positioning of the tray 1 and the assembly to be measured on the tray 1.

[0030] During the conveying process of the pallet, if the placement position is not correct, it is easy to cause a collision between the side and the conveying line. To avoid this situation, at least one anti-collision block 16 is provided on both sides of the pallet 1, and the anti-collision block 16 is elastic. After the anti-collision block 16 is provided, during the application process, the left and right sides of the pallet 1 correspond to the two side line rollers respectively, so that during the conveying process, the anti-collision block can be used to prevent the pallet from rubbing and colliding with the rollers on both sides during the conveying process, thereby damaging the pallet. The anti-collision block is elastic and can have a certain buffer deformation after the collision.

[0031] Furthermore, a rotating wheel 14 is installed at each of the four corners of the bottom of the tray 1. The outer side of the rotating wheel 14 extends out of the side edge of the tray and can rotate under the action of external force. In this way, the rotating wheel can effectively ensure that the contact surface between the tray and the line roller is smaller during the transportation process, and the rotating wheel rotates after rubbing against the side edge during transportation, thereby reducing friction and making transportation smoother and faster.

[0032] Furthermore, a plurality of wear-resistant plates 15 can be detachably mounted on the lower end surface of the tray 1 and along the four sides of the tray 1, and the rotating wheel 14 is mounted between the tray 1 and the corresponding wear-resistant plates 15. In this way, after the wear-resistant plates are arranged, the wear-resistant plates can be directly replaced after long-term use, which can reduce the maintenance cost of the tray.

[0033] Furthermore, the positioning rod 4 and the positioning pin 5 are both sleeved and fixed on a lifting positioning plate 6, and the lifting positioning plate 6 is placed in the hollow inner cavity of the fixing seat 2. A lifting plate 61 with a tilted top bearing 62 at the lower end is fixed in the middle of the lower end of the lifting positioning plate 6. A tilted top slider 8 in contact with its tilted top bearing 62 is provided under the lifting plate 61. The upper end surface of the tilted top slider 8 is composed of an upper plane 81, a lower plane and an inclined surface 82 connecting the upper plane 81 and the lower plane. A control tilted top slider 8 is provided on one side of the tilted top slider 8. The push mechanism 9 slides left and right and positions. When the inclined top bearing 62 is on the upper plane 81 of the inclined top slider 8, each positioning rod 4 and positioning pin 5 extends out of the corresponding support plate 3. When the inclined top slider 8 moves horizontally under the action of the push mechanism 9, the inclined top bearing 62 contacts the inclined surface 82 of the inclined top slider 8, and after the inclined top slider 8 continues to slide, it continues to descend along the inclined surface 82 of the inclined top slider 8 until the positioning rod 4 on the lifting positioning plate 6 is lowered into the support plate 3 for positioning (at this time, the inclined top bearing 62 is on the lower plane). In this way, the positioning rod 4 and the positioning pin 5 are fixed on the rectangular positioning plate, which can ensure that the positioning rod 4 and the positioning pin 5 can be lifted and lowered at the same height. The lifting positioning plate 6 contacts the inclined top slider 8, and through the horizontal movement of the inclined top slider 8, it rises and falls, thereby driving the positioning rod 4 and the positioning pin 5 fixed thereto to rise and fall, so that the positioning rod 4 and the positioning pin 5 extend out of the support plate 3 and connect with the lower end of the pallet 1. At the same time, after the positioning rod 4 and the positioning pin 5 are lowered, they are placed in the support plate 3, and the upper end of the support plate 3 supports the assembly pallet 1. The setting structure of the inclined top slider 8 is ingenious. When the plane contacts the inclined top bearing 62 on the rectangular positioning plate, the positioning rod 4 and the positioning pin 5 extend out of the support plate 3, and the height does not change. When the inclined top slider 8 is pushed, the inclined top bearing 62 will contact the inclined surface 82 of the inclined top slider 8. When in contact with the inclined surface 82, the inclined top bearing 62 rolls under the action of friction, and the inclined top bearing 62 moves from the high-position component to the low position along the contact surface of the inclined top slider 8, so that the positioning rod 4 and the positioning pin 5 also move down to achieve the descent.

[0034] Furthermore, a horizontally arranged inclined top linear slide rail is provided in the fixed seat 2, and the lower end of the inclined top slider 8 is slidably matched on the inclined top linear slide rail; four guide cylinders are also provided in the fixed seat 2, and a guide rod 7 is fixedly connected to the lower ends of the two positioning rods 4 and the two positioning pins 5, and the guide rod 7 is sleeved in the guide cylinder and can move up and down along the guide cylinder. In this way, after the inclined top slider 8 is matched with the inclined top linear slide rail, the inclined top linear slide rail can limit the sliding path of the inclined top slider 8, so that it slides along a straight line. At the same time, the four guide cylinders provided can guide the positioning rod 4 and the positioning pin 5, so that they move upward more smoothly.

[0035] Furthermore, the push mechanism 9 is a push cylinder installed on the outside of the fixed seat 2, and the cylinder rod of the push cylinder passes through the side plate of the fixed seat 2 and is fixedly connected to the inclined top slide 8. In this way, the cylinder runs more stably, and the stroke can be accurately controlled, which can effectively ensure the moving height of the positioning rod 4 and the positioning pin 5. After rising, it extends out of the fixed seat 2. After descending, it can effectively ensure that the abutment 12 and the positioning pin sleeve 11 on the tray 1 can cooperate with the corresponding support plate 3 center and be placed in the support plate 3 without interfering with the positioning rod 4 and the positioning pin 5.

[0036] Furthermore, the fixing seat 2 is mainly composed of a bottom plate, four side plates and a top plate, on which a mounting plate 21 can be detachably mounted, the assembly holes are arranged on the mounting plate 21, four through holes corresponding to the assembly holes are arranged on the top plate, and the positioning rods 4 and the positioning pin sleeves 11 are arranged in the assembly holes and the through holes. In this way, the mounting plate 21 arranged on the fixing seat 2 is mainly used to install the zero-point clamping positioning plate 13 or the support plate 3.

[0037] Further, the bottom plate is extended out of the side plate around all sides, and a plurality of fixing holes are arranged at intervals on the extended part of the bottom plate. In this way, after the bottom plate is extended, the fixing holes arranged on the extended part can facilitate the fixing seat 2 to be fixedly installed on the stand base.

[0038] Example 2

[0039] like Figure 5 , Figure 6As shown, the multifunctional tray 1 and tray positioning support structure applied to the offline test bench provided in this embodiment include a tray positioning support seat installed at the test station of the bench base, and a tray 1 located above the tray positioning support seat and capable of being raised and lowered in the height direction; a zero point positioning pin 13 can be detachably installed at each mounting hole, and a zero point clamping positioning plate 10 can be detachably installed at each assembly hole, and the zero point clamping positioning plate 10 can be matched with the zero point positioning pin 13 on the bottom of the tray 1 to lock and fix the tray 1 on the fixing seat 2. The upper end of the tray positioning support seat can be equipped with the zero point clamping positioning plate 10, which can be matched with the zero point positioning pin 13 on the tray 1 to form a locking positioning of the tray 1. This positioning method of the tray 1 can effectively ensure that the tray 1 will not shake or shift during the test process.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A multifunctional tray for an offline test bench, comprising a tray, characterized in that: Four rectangularly distributed mounting holes are provided on the lower end surface of the tray, and a zero-point locating pin can be detachably installed at each mounting hole, or two abutments can be detachably installed at two of the diagonally located mounting holes, and two locating pin sleeves can be detachably installed on the other two mounting holes; the abutments are cylindrical, and the longitudinal length of the abutments is consistent with the axial length of the locating pin sleeve.

2. The multifunctional tray for offline test bench according to claim 1, characterized in that: At least one anti-collision block is arranged on both the left and right sides of the tray, and the anti-collision block is elastic.

3. The multifunctional tray for offline test bench according to claim 1 or 2, characterized in that: A rotating wheel is installed at each of the four corners of the bottom of the tray. The outer side of the rotating wheel extends out of the side edge of the tray and can rotate under the action of external force.

4. The multifunctional tray used for offline test bench according to claim 3, characterized in that: A plurality of wear-resistant plates can be detachably mounted on the lower end surface of the tray and along the four sides of the tray, and the rotating wheel is mounted between the tray and the corresponding wear-resistant plates.

5. A pallet positioning support structure used in an offline test bench, comprising a pallet positioning support seat installed at a test station of a bench base, and a pallet located above the pallet positioning support seat and capable of being lifted and lowered in height, characterized in that: The pallet is as described in any one of claims 1 to 4, and the pallet positioning support seat includes a rectangular fixing seat, the middle part of the fixing seat has a cavity, and an assembly hole is provided at the four corners of the upper end of the fixing seat, and the four assembly holes are distributed in a rectangular shape, corresponding to the mounting holes one by one, and the center line overlaps with the center line of the mounting hole; a zero-point clamping positioning plate or a support plate can be detachably installed at each assembly hole, and the zero-point clamping positioning plate can be matched with the zero-point positioning pin on the bottom of the pallet to lock the pallet on the fixing seat; among the four support plates, two of the diagonal support plates are provided with a positioning rod in the middle part, Two positioning pins are provided in the middle of the other two supporting plates, and the upper ends of the positioning rods and the positioning pins extend out of the upper end surfaces of the supporting plates; when the tray descends, the two positioning rods correspond to and contact the abutment members on the tray, and the two positioning pins are placed in two positioning pin sleeves on the tray; a lifting mechanism is installed in the cavity of the fixed seat, which can drive the two positioning rods and the two positioning pins to move downward and lift synchronously. When the positioning rods and the positioning pins move downward under the drive of the lifting mechanism and the upper ends are lower than the supporting plates, the two abutment members and the two positioning pin sleeves at the lower ends of the tray are respectively sleeved in the corresponding supporting plates for positioning, and the lower end surface of the tray is abutted against the four supporting plates.

6. The pallet positioning support structure used for the offline test bench according to claim 5, characterized in that: The positioning rod and the positioning pin are both sleeved and fixed on a lifting positioning plate, and the lifting positioning plate is placed in the hollow inner cavity of the fixing seat. A lifting plate with a tilted top bearing at the lower end is fixed in the middle of the lower end of the lifting positioning plate, and a tilted top slider in contact with its tilted top bearing is provided under the lifting plate. The upper end surface of the tilted top slider is composed of an upper plane, a lower plane and an inclined surface connecting the upper plane and the lower plane. A pushing mechanism for controlling the tilted top slider to slide left and right and position the tilted top slider is provided on one side of the tilted top slider. When the tilted top bearing is on the upper plane of the tilted top slider, each positioning rod and the positioning pin extend out of the corresponding supporting plate. When the tilted top slider moves horizontally under the action of the pushing mechanism, the tilted top bearing contacts with the inclined surface of the tilted top slider, and after the tilted top slider continues to slide, it continues to descend along the inclined surface of the tilted top slider until the positioning rod on the lifting positioning plate descends to the support plate for positioning.

7. The pallet positioning support structure applied to the offline test bench according to claim 6 is characterized in that: A horizontally arranged inclined top linear slide rail is provided in the fixed seat, and the lower end of the inclined top sliding block is slidably fitted on the inclined top linear slide rail; four guide cylinders are also provided in the fixed seat, and a guide rod is fixedly connected to the lower ends of the two positioning rods and the two positioning pins. The guide rod is sleeved in the guide cylinder and can move up and down along the guide cylinder.

8. The pallet positioning support structure applied to the offline test bench according to claim 6 is characterized in that: The pushing mechanism is a pushing cylinder installed on the outside of the fixing seat. The cylinder rod of the pushing cylinder penetrates the side plate of the fixing seat and is fixedly connected with the inclined top sliding block.

9. The pallet positioning support structure applied to the offline test bench according to claim 6, 7 or 8, characterized in that: The fixing seat is mainly composed of a bottom plate, four side plates and a top plate. A mounting plate can be detachably mounted on the top plate. The assembly hole is arranged on the mounting plate. Four through holes corresponding to the assembly holes are arranged on the top plate. The positioning rod and the positioning pin are sleeved in the assembly hole and the through hole.

10. The pallet positioning support structure used for the offline test bench according to claim 9, characterized in that: The four sides of the bottom plate extend out of the side plates, and a plurality of fixing holes are arranged at intervals on the bottom plate.

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