Plate fixing device with positioning function

Abstract

The utility model relates to the technical field of metal cabinet processing, in particular to a plate fixing device with a positioning function, which comprises a first mounting plate and a second mounting plate, the first mounting plate is in inserted connection with the second mounting plate through a connector arranged on the first mounting plate, a first fixing seat is welded at one end of the top of the first mounting plate, and a second fixing seat is welded at the other end of the top of the second mounting plate. And the other end of the top of the first mounting plate is slidably connected with a second fixed seat. According to the improved fixing device, multiple functions of fixing, positioning, height adjusting and the like are integrated, the positioning assembly is arranged on the second fixing base, one end of the push plate is used for zero point positioning, a clear reference point is provided for the whole positioning system, external measuring equipment is not needed, the possibility of operation steps and personal errors is reduced, and the positioning accuracy is improved. The first fixing base and the second fixing base are of an integrated structure, the first mounting plate serves as a reference point, the offset problem in the plate placing process is effectively avoided, the positioning accuracy is improved, and a solid guarantee is provided for subsequent plate machining.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal cabinet processing technical field, concretely is a plate fixing device with positioning function. BACKGROUND

[0002] Metal cabinet is a kind of cabinet body mainly made of metal material, usually adopts steel, aluminum alloy and other metal materials, these metals have higher strength and durability, can bear certain weight and pressure, not easy to deform and damage.Meanwhile, metal material also has good fireproof, moistureproof, anticorrosive performance, is suitable for various different environmental conditions, according to different uses, metal cabinet can be designed into different specifications and styles.

[0003] In the metal cabinet processing technology, usually fixed device will be used, it is similar to the fixture of fixed plate, and the plate fixing device plays a crucial role when involving cutting, welding and other processes.

[0004] The inventor found that the prior art has the following problems in the process of realizing the utility model:1, at present, some relatively simple fixed equipment can only be fixed at the both ends of plate, and is mostly split structure, although simple, also can realize fixed, but when the processing personnel place plate and appear deviation, subsequent fixture installation process may also follow displacement, this will directly lead to the deviation of processing size;2, at the same time, when involving some need accurate determination plate body surface position positioning, possibly also need to help external auxiliary measuring tool realizes the positioning of plate, this makes the whole processing process become more complex, increases the work burden of operating personnel, and also will occupy operating space. UTILITY MODEL CONTENTS

[0005] The utility model discloses a board fixing device with positioning function is provided to solve the problem that the fixed equipment of split type in the above background art can not be corrected due to the board placement angle and the problem that external measuring tools are needed for positioning. To achieve the above object, the utility model provides the following technical scheme: a board fixing device with positioning function, comprising first mounting plate and second mounting plate, the first mounting plate is inserted and is connected with the second mounting plate through the connecting head of opening, one end of the top of first mounting plate is welded with first fixed seat, the other end of the top of first mounting plate is slidably connected with second fixed seat, the first fixed seat is rotatably connected with lead screw between second fixed seat, the surface of second mounting plate is slidably connected with third fixed seat, the notch of the side of first mounting plate is welded with rack, the outer wall of second fixed seat is equipped with positioning assembly and is installed, the notch of the outer wall of first mounting plate is slidably connected with rack and is correspondingly provided with positioning assembly, the first fixed seat, second fixed seat and third fixed seat all are composed of hydraulic cylinder, support arm and fixed part, the top of support arm is rotatably connected with the power output end of hydraulic cylinder, the bottom of support arm is rotatably connected with the top of fixed part.

[0006] The positioning assembly comprises a push plate and a constant force spring sheet. The constant force spring sheet is coiled and rotatably connected to the notch at one end of the surface fixed part of the second fixed seat through the shaft rod penetrating the shaft center. One side of the push plate is attached to the notch outer wall where the constant force spring sheet is located. The other side of the push plate is glued to the displacement seat. One end of the displacement seat extends into the notch where the rack is located and is rotatably connected to the gear. The gear is meshingly connected to the surface of the rack. A ratchet wheel is rotatably connected inside the displacement seat. The ratchet wheel is coaxially connected between the gear. The top of the ratchet wheel is meshingly connected to the pawl.

[0007] Further preferably, the first mounting plate and the second mounting plate are perpendicular to each other at an angle of 90 degrees, and the connecting head is provided with a threaded hole. The second mounting plate is threadedly connected with a quick release bolt at the slot for inserting the connecting head.

[0008] Further preferably, the second mounting plate is composed of two plate bodies connected by a hinge. The two plate bodies are provided with sliding grooves that closely fit each other. The third fixed seat is slidably connected to the sliding grooves through the limiting blocks provided in the third fixed seat. The limiting blocks are penetrated by and threadedly connected with the quick release bolts.

[0009] Further preferably, one end of the support arm is longer and the other end is shorter. The longer end and the shorter end of the support arm are rotatably connected to the first fixed seat, the second fixed seat and the third fixed seat through the pin shafts, respectively. The fixed part forms a lifting structure with the hydraulic cylinder and the support arm.

[0010] Further preferably, the screw rod is connected to the plate surface of the second fixing base through a nut screwed on the outer wall of the screw rod, the second fixing base is connected to the transmission structure through the screw rod, and the second fixing base is connected to the first fixing base to form relative movement.

[0011] Further preferably, the surface of the constant force spring sheet is marked with a scale, the tail end of the constant force spring sheet is integrally connected with the shaft rod at the center of the constant force spring sheet, and the head end of the constant force spring sheet is integrally connected with the push plate, and the push plate is connected to the transmission structure through the gear and the rack.

[0012] Further preferably, the ratchet wheel is connected to the transmission structure through the gear, the pawl is connected to the reciprocating motion on the surface of the ratchet wheel, one end of the pawl is connected to the support spring and is movably connected to the inside of the displacement seat through the support spring, and the top of the pawl is connected to the pull rod through the reset spring, the pull rod slides in the displacement seat and one end of the pull rod extends to the outside of the displacement seat.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] In the utility model, the detachable and foldable structure of the first mounting plate and the second mounting plate is convenient for storage and carrying, is especially suitable for machining workshops of frequently moved equipment, the installation structure is simple, and the second mounting plate can be operated without complex professional tools, the foldable design of the second mounting plate can reduce the operation space occupation when machining small size plate bodies, the sliding structure of the third fixing base can flexibly adjust the fixed point position, adapts to different specifications of plate materials, improves machining precision, the structure formed by the hydraulic cylinder, the supporting arm and the fixing piece can adjust the height according to the thickness of the plate material, the polyurethane rubber material and the strip structure at the bottom of the fixing piece increase the friction force, prevent the plate material from sliding, and the transmission structure of the second fixing base can adjust the distance from the first fixing base, and adapts to different size plate materials.

[0015] In the utility model, the positioning assembly is arranged on the second fixing base, one end of the push plate is used as a zero point positioning, definite reference points are provided for the whole positioning system, the constant force spring sheet is unfolded under the rotation structure and can keep the horizontal position, the transmission structure of the gear and the rack is combined to slide on the outer wall of the first mounting plate, so that the positioning is more stable and reliable, the integrated positioning design does not need external measuring equipment, the operation steps and the possibility of human error are reduced, meanwhile, the integrated structure of the first fixing base and the second fixing base takes the first mounting plate as a reference point, effectively avoids the deviation problem in the plate placing process, improves the positioning accuracy, provides solid guarantee for subsequent plate machining, and ensures the accuracy of the machining size. ACCURACY

[0016] Figure 1 It is a front view structural schematic diagram of the utility model;

[0017] Figure 2The utility model discloses a connecting head distribution structure schematic diagram shows that the first installation board structure schematic diagram shows that the positioning assembly structure schematic diagram shows the second installation board structure schematic diagram shows the utility model discloses a

[0018] Figure 3 The utility model discloses a first installation board structure schematic diagram shows

[0019] Figure 4 The utility model discloses a positioning assembly structure schematic diagram shows

[0020] Figure 5 The utility model discloses a second installation board structure schematic diagram shows

[0021] Figure 6 The utility model discloses a Figure 4 The utility model discloses a structure amplification schematic diagram shows.

[0022] In the drawing: 1, first installation board, 2, second installation board, 3, connecting head, 4, first fixed seat, 5, second fixed seat, 6, screw rod, 7, third fixed seat, 8, rack, 9, positioning assembly, 901, push plate, 902, constant force spring piece, 903, displacement seat, 904, gear, 905, ratchet wheel, 906, pawl, 907, support spring, 908, return spring, 909, pull rod, 10, hydraulic cylinder, 11, support arm, 12, fixed part, 13, limit block. Specific implementation

[0023] The utility model discloses an embodiment, and 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, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.

[0024] Please refer to Figures 1 to 6 The utility model provides a kind of technical scheme: a plate fixing device with positioning function, including first installation board 1 and second installation board 2, first installation board 1 is inserted and is connected with second installation board 2 by the connecting head 3 being opened in it, one end of first installation board 1 top is welded with first fixed seat 4, another end of first installation board 1 top is slidably connected with second fixed seat 5, first fixed seat 4 and second fixed seat 5 are rotatably connected with screw rod 6, the surface of second installation board 2 is slidably connected with third fixed seat 7, the notch in the side of first installation board 1 is welded with rack 8, positioning assembly 9 is installed on the outer wall of second fixed seat 5 side, positioning assembly 9 is slidably connected in the notch outer wall of first installation board 1 corresponding rack 8 is set, first fixed seat 4, second fixed seat 5 and third fixed seat 7 are all by hydraulic cylinder 10, support arm 11 and fixed part 12 are formed, the top of support arm 11 is rotatably connected to the power output end of hydraulic cylinder 10, the bottom of support arm 11 is rotatably connected to the top of fixed part 12.

[0025] The positioning assembly 9 comprises a push plate 901 and a constant force spring sheet 902, the constant force spring sheet 902 is coiled and rotationally connected to the notch at one end of the surface fixing piece 12 of the second fixed base 5 through the shaft rod penetrating the shaft center, one side of the push plate 901 is attached to the outer wall of the notch where the constant force spring sheet 902 is located, the other side of the push plate 901 is glued to the displacement seat 903, one end of the displacement seat 903 extends into the notch where the rack 8 is located and rotationally connected to the gear 904, the gear 904 is meshingly connected to the surface of the rack 8, the inside of the displacement seat 903 is rotationally connected to the ratchet wheel 905, the ratchet wheel 905 is coaxially connected between the gear 904, and the top of the ratchet wheel 905 is meshingly connected to the ratchet claw 906.

[0026] In this embodiment, as shown in Figure 1 and Figure 2 , the first mounting plate 1 and the second mounting plate 2 are vertically distributed at 90 degrees, the connecting head 3 is provided with a threaded hole, and the second mounting plate 2 is threadedly connected with the quick release bolt at the notch for inserting the connecting head 3; the detachable structure between the first mounting plate 1 and the second mounting plate 2 is convenient for storage and transportation, especially for some machining workshops that need to frequently move equipment, this detachable structure has great advantages, and its installation structure is simple, first inserted through the connecting head 3, and then threadedly fixed by the quick release bolt, this combination of double structures not only ensures the stability of installation, but also has certain flexibility, without the need for complex professional tools, which is convenient for operators to operate.

[0027] In this embodiment, as shown in Figure 1 , Figure 2 and Figure 5As shown, the second mounting plate 2 is composed of two groups of plate bodies connected by hinges, and both groups of plate bodies are provided with sliding grooves that closely fit each other, and the third fixing seat 7 is slidingly connected in the sliding groove through the limiting block 13 provided therein, and the limiting block 13 is penetrated and threadedly connected with the quick release bolt; the plate body structure of the second mounting plate 2 makes it foldable, and for processing some smaller plate bodies, the operation space of the table top can be reduced by folding the second mounting plate 2, and since the surface sliding grooves are interconnected, even in the folded state, the third fixing seat 7 can be moved to the other end plate through the limiting block 13, and the sliding structure of the third fixing seat 7 is to adjust the distance between the first fixing seat 4, for different specifications of plate materials, the position of the fixing point can be flexibly adjusted, to ensure that the plate material can be uniformly supported in all directions, improve the machining precision, and at the same time, in order to improve the stability of the fixing point, the quick release bolt is arranged on the limiting block 13, and the sliding groove of the second mounting plate 2 is provided with structures for connecting the quick release bolt at the upper and lower ends, first, the through slot at the top is to facilitate the sliding of the quick release bolt when the limiting block 13 is moved, and the sliding groove inside the second mounting plate 2 and the slot at the bottom of the limiting block 13 are smaller than the slot at the top of the second mounting plate 2, and the purpose is to fix the limiting block 13 with the quick release bolt, and the shaft of the quick release bolt at the bottom can be clamped in this slot by rotating, thereby ensuring the fixed position of the limiting block 13, thereby providing a solid guarantee for the subsequent plate materials.

[0028] In this embodiment, as shown in FIG. 1, Figure 1 , Figure 2 and Figure 3As shown, one end of the support arm 11 is longer and the other end is shorter, and the support arm 11 is connected between the longer and shorter ends and is rotatably connected to the first fixed seat 4, the second fixed seat 5 and the third fixed seat 7 through the pin shafts, respectively, and the fixing member 12 forms a lifting structure through the hydraulic cylinder 10 and the support arm 11; compared with the traditional structure of the two-end type fixing structure, the first mounting plate 1 and the second mounting plate 2 are distributed at 90 degrees, which can fix the plate from three different directions, providing all-around supporting force, which can better resist the external force received by the plate in each direction, whether in welding or in other processing links, this fixing mode has obvious advantages, preventing the plate from moving during processing, and the structure formed between the hydraulic cylinder 10, the support arm 11 and the fixing member 12 can be adjusted in height according to plates of different thicknesses, and in order to improve the friction, the wide surface at the bottom of the fixing member 12 is made of polyurethane rubber material and is distributed in a strip structure, the polyurethane rubber has good elasticity and wear resistance, which can generate a large friction force when contacting the plate, effectively preventing the plate from sliding or moving during processing, and the strip structure further increases the contact area with the plate, and since the second fixed seat 5 is externally provided with the positioning assembly 9, in order to avoid the elastic folding structure of the positioning assembly 9 causing wear of the rubber material during pulling, the slot for installing the constant force spring sheet 902 of the second fixed seat 5 is made of high-strength plastic material (polycarbonate).

[0029] In this embodiment, as shown in Figure 3 The screw rod 6 is connected to the plate surface of the second fixed seat 5 through the nut threadedly connected to the outer wall of the screw rod 6 and the bolt, the second fixed seat 5 forms a transmission structure through the screw rod 6, and the second fixed seat 5 and the first fixed seat 4 form relative motion; the transmission structure formed by the second fixed seat 5 through the screw rod 6 can flexibly adjust the distance between the second fixed seat 5 and the first fixed seat 4 according to plates of different sizes, ensuring that plates of various specifications can be effectively fixed, and in different processing processes, the fixed distance of the plate has different requirements, compared with the traditional split type fixing equipment installation process, which may cause displacement of the plate placement, the first fixed seat 4 and the second fixed seat 5 are integrated, and personnel can use the first mounting plate 1 as a reference point to effectively avoid the problem of displacement during plate placement, and the integrated fixing device can realize rapid adjustment of the distance by using the transmission structure, saving the time of adjusting the clamps one by one.

[0030] In this embodiment, as shown in Figure 4 and Figure 6As shown, the surface of the constant force spring sheet 902 is marked with a scale, and the tail end of the constant force spring sheet 902 is integrally connected with the shaft at the center of the constant force spring sheet 902, and the head end of the constant force spring sheet 902 is integrally connected with the push plate 901, and the push plate 901 is in transmission structure with the gear 904 and the rack 8; the positioning assembly 9 is arranged on one side of the second fixed seat 5, which means that when the second fixed seat 5 is driven, the positioning assembly 9 is correspondingly driven, and the second fixed seat 5 combined with the positioning assembly 9 is not only suitable for the fixation of the plate, but also can play a role in positioning in various processing technologies. The one end of the push plate 901 serves as a zero point positioning, providing a clear reference point for the entire positioning system. By pulling the push plate 901, the constant force spring sheet 902 can be unfolded under the rotating structure. Since the one end of the push plate 901 is in transmission structure with the gear 904 and the rack 8, it means that the constant force spring sheet 902 can still maintain a horizontal position when it is unfolded under the rotating structure, which makes the positioning more stable and reliable. The positioning function is integrated into the fixing device, without the need for additional measuring equipment. This measuring method makes the positioning more intuitive and accurate, and greatly reduces the possibility of errors caused by uneven placement in human operation.

[0031] As shown in the embodiment, Figure 4 and Figure 6 The ratchet wheel 905 is in rotating structure with the gear 904, and the pawl 906 is in reciprocating motion on the surface of the ratchet wheel 905, and one end of the pawl 906 is glued with the supporting spring 907 and is movably connected to the inside of the displacement seat 903 through the supporting spring 907, and the top of the pawl 906 is glued with the pull rod 909 through the return spring 908, and the pull rod 909 slides in the displacement seat 903 and its one end extends to the outside of the displacement seat 903; due to the elastic structure of the constant force spring sheet 902, in order to avoid the reset of the push plate 901 under this elastic structure, the pawl 906 of the ratchet wheel 905 can effectively prevent this elastic reset, ensuring that the push plate 901 can accurately stay at the target positioning point and will not deviate due to elastic reset, thereby ensuring the accuracy of subsequent plate processing size. After each plate positioning is completed, the one end of the pawl 906 will be away from the surface of the ratchet wheel 905 by pulling the pull rod 909. Since the constant force spring sheet 902 has elasticity, after losing the fixation of the pawl 906 of the ratchet wheel 905, the constant force spring sheet 902 will contract and pull the push plate 901. The sliding of the push plate 901 will make the gear 904 rotate in the opposite direction, and the return spring 908 arranged between the pull rod 909 and the pawl 906 effectively ensures the effective docking of the pawl 906 with the tooth groove on the surface of the ratchet wheel 905 after each reset. This greatly saves the time of manual winding of the measuring equipment for the operator, making the processing process more smooth.

[0032] The plate fixing device with the positioning function has the advantages that the plate fixing device with the positioning function is convenient to use, and the plate can be fixed in the correct position.

[0033] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, first, the first mounting plate 1 is bolted to the machining table through the externally provided mounting holes, after the first mounting plate 1 is installed, the second mounting plate 2 is installed at 90 degrees to the first mounting plate 1 through plug-in connection at the position of the butt joint connector 3, and then fixed through quick-release bolts, after the first mounting plate 1 and the second mounting plate 2 are fixed, the plate to be machined is placed in the right-angle area formed by the first mounting plate 1 and the second mounting plate 2, and the positions of the second fixed seat 5 and the third fixed seat 7 are adjusted according to the width and length of the plate, the power is turned on, the screw rod 6 rotates to drive the second fixed seat 5 to rotate, the bottom of the second fixed seat 5 slides in the notch of the first mounting plate 1, and the second fixed seat 5 approaches the first fixed seat 4, since the second fixed seat 5 is a carrier of the positioning assembly 9, when the second fixed seat 5 is driven, the positioning assembly 9 slides accordingly, the internal gear 904 meshes with the rack 8 to drive, after adjusting the first fixed seat 4 to the appropriate position according to the requirements of the machining process or the length of the plate, the power driving the screw rod 6 is turned off, the limit block 13 is rotated with the quick-release bolt at the top of the second mounting plate 2, in the process of rotation, the quick-release bolt rises, the shaft head at the bottom moves out of the notch in the second mounting plate 2 and rotates into the limit block 13 at the same time, the limit block 13 loses the fixation of the quick-release bolt and can move in the sliding groove of the second mounting plate 2, the production personnel can adjust the position of the third fixed seat 7 and the distance it moves towards the first fixed seat 4 according to the requirements of the machining process or the width of the plate, when adjusted to the appropriate position, the quick-release bolt is reversely rotated, in the process of descending, the shaft head penetrates the limit block 13 through the threaded structure again and is inserted into the notch in the second mounting plate 2, thereby clamping the limit block 13 to fix the third fixed seat 7, after the positioning of the second fixed seat 5 and the third fixed seat 7 is completed, the three sets of fixed assemblies are respectively above the three different corners of the plate, the power output end of the hydraulic cylinder 10 drives the support arm 11 to descend under the rotation structure, and the fixed part 12 is pressed and fitted on the surface of the plate body accordingly, thereby achieving fixation, the rubber material effectively increases the friction without causing wear to the surface of the plate body, and at the same time, according to the requirements of the machining process, the plate machining point is positioned, the push plate 901 is pulled, in the process of pulling, the constant force spring sheet 902 expands under the rotating structure, at the same time, the displacement seat 903 slides accordingly, and the gear 904 is driven on the surface of the rack 8, when the gear 904 rotates, the ratchet wheel 905 rotates at the same time, the teeth on the surface of the ratchet wheel 905 will be in contact with the pawl 906 one by one, since the rotation direction of the ratchet wheel 905 corresponds to the inclination direction of the pawl 906, the pawl 906 is lifted under the push of the teeth of the ratchet wheel 905, and when the teeth of the ratchet wheel 905 pass the pawl 906, the pawl 906 falls rapidly under the action of the support spring 907 and is clamped into the next tooth groove of the ratchet wheel 905, thereby preventing the ratchet wheel 905 from counterclockwise reverse rotation, the operator can record the positioning point quickly and intuitively through the scale on the surface of the constant force spring sheet 902 pulled out by the push plate 901,When the subsequent processing process is completed and the constant force spring sheet 902 needs to be reset for the next positioning, the pull rod 909 can be pulled, and after the pull rod 909 is pulled, one end of the pawl 906 is separated from the tooth groove of the ratchet wheel 905, the locking of the ratchet wheel 905 is released, and the push plate 901 can drive the ratchet wheel 905 to counterclockwise reverse rotation under the elastic action of the constant force spring sheet 902, and the gear 904 is correspondingly turned over, so that the push plate 901 is reset.

[0034] The basic principle, main characteristics and advantages of the present application are shown and described above. The skilled person in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A plate fixing device with positioning function, comprising a first mounting plate (1) and a second mounting plate (2), characterized in that: The first mounting plate (1) is connected to the second mounting plate (2) by a connector (3). A first fixing seat (4) is welded to one end of the top of the first mounting plate (1), and a second fixing seat (5) is slidably connected to the other end of the top of the first mounting plate (1). A lead screw (6) is rotatably connected between the first fixing seat (4) and the second fixing seat (5). A third fixing seat (7) is slidably connected to the surface of the second mounting plate (2). A rack (8) is welded into a groove on one side of the first mounting plate (1). A positioning component (9) is installed on one side of the outer wall of the second fixed seat (5). The positioning component (9) is slidably connected to the outer wall of the slot of the first mounting plate (1) corresponding to the rack (8). The first fixed seat (4), the second fixed seat (5) and the third fixed seat (7) are all composed of a hydraulic cylinder (10), a support arm (11) and a fixing member (12). The top of the support arm (11) is rotatably connected to the power output end of the hydraulic cylinder (10), and the bottom of the support arm (11) is rotatably connected to the top of the fixing member (12). The positioning component (9) includes a push plate (901) and a constant force spring plate (902). The constant force spring plate (902) is coiled and rotatably connected to a slot at one end of a fixing member (12) on the surface of the second fixing seat (5) via a shaft passing through the center. One side of the push plate (901) is attached to the outer wall of the slot where the constant force spring plate (902) is located. The other side of the push plate (901) is glued to a displacement seat (903). One end of the displacement seat (903) extends into the slot where the rack (8) is located and is rotatably connected to a gear (904). The gear (904) is meshed with the surface of the rack (8). A ratchet (905) is rotatably connected inside the displacement seat (903). The ratchet (905) and the gear (904) are coaxially connected. A pawl (906) is meshed with the top of the ratchet (905).

2. The plate fixing device with positioning function according to claim 1, characterized in that: The first mounting plate (1) and the second mounting plate (2) are perpendicularly distributed at 90 degrees, and the connector (3) is provided with a threaded through hole. The second mounting plate (2) is threaded with a quick-release bolt at the slot for inserting the connector (3).

3. The plate fixing device with positioning function according to claim 1, characterized in that: The second mounting plate (2) is composed of two sets of plates connected by hinges, and both sets of plates have grooves that fit tightly together. The third fixing seat (7) is slidably connected to the groove through the limiting block (13) it has, and the limiting block (13) is threaded through and connected with a quick-release bolt.

4. A plate fixing device with positioning function according to claim 1, characterized in that: One end of the support arm (11) is longer and the other end is shorter. The connection between the longer and shorter ends of the support arm (11) is rotatably connected to the first fixed seat (4), the second fixed seat (5) and the third fixed seat (7) respectively by pins. The fixing member (12) forms a lifting structure with the support arm (11) through the hydraulic cylinder (10).

5. A plate fixing device with positioning function according to claim 1, characterized in that: The lead screw (6) is connected to the plate surface of the second fixed seat (5) by bolts through the nut threaded to its outer wall, and the second fixed seat (5) forms a transmission structure through the lead screw (6), and the second fixed seat (5) and the first fixed seat (4) form a relative motion.

6. A plate fixing device with positioning function according to claim 1, characterized in that: The constant force spring plate (902) has a scale marked on its surface, and the tail end of the constant force spring plate (902) is integrally connected with the shaft at its center. The head end of the constant force spring plate (902) is integrally connected with the push plate (901). At the same time, the push plate (901) forms a transmission structure with the rack (8) through the gear (904).

7. A plate fixing device with positioning function according to claim 1, characterized in that: The ratchet (905) forms a rotating structure through the gear (904), and the pawl (906) reciprocates on the surface of the ratchet (905). One end of the pawl (906) is glued to a support spring (907) and is movably connected to the inside of the displacement seat (903) through the support spring (907). At the same time, the top of the pawl (906) is glued to a pull rod (909) through a return spring (908). The pull rod (909) slides on the displacement seat (903) and one end of it extends to the outside of the displacement seat (903).

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