Lifting fixing device

Abstract

The invention discloses a lifting fixing device, and relates to the technical field of composite material production equipment, the lifting fixing device comprises a lifting support, a clamping mechanism and a material supporting mechanism, the lifting support is arranged in a lifting mode in the vertical direction, and a lifting platform is fixedly arranged at the top of the lifting support; the clamping mechanism is fixedly arranged on the lifting platform, and the clamping mechanism is used for clamping a convex part of a to-be-lifted part; the material supporting mechanism is fixedly arranged on the lifting platform and used for driving the part to be lifted to ascend and descend in the vertical direction relative to the clamping mechanism, and the protruding part is correspondingly disengaged from or enters the clamping mechanism. According to the lifting fixing device, the assembling and disassembling steps are simple, operation is convenient, the production time is remarkably shortened, the manual participation degree is low, the labor intensity is low, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material production equipment, and particularly relates to a lifting and fixing device. Background Art

[0002] Weathering steel, with its excellent corrosion resistance, high strength and good welding performance, is combined with carbon fiber composite materials to form a lightweight hybrid structure, which is widely used in key components of rail vehicles, such as car body skeletons, bogies and roof equipment boxes, etc. It not only reduces the weight of the whole vehicle, improves energy efficiency, but also enhances structural durability, and is especially suitable for transportation tools such as high-speed railways and subways that are exposed to harsh environments for a long time.

[0003] Due to the physical property differences between composite materials and metal materials, in key processes such as pre-assembly, positioning adjustment and final fixing, a lifting and fixing device is required to perform positioning control. However, traditional lifting and fixing devices have problems such as complex operation, time-consuming installation and high labor intensity. For example, when assembling the car body skeleton, workers need to frequently adjust the position of the fixture and manually lock the bolts, resulting in an extended assembly cycle and seriously affecting production efficiency.

[0004] Therefore, how to optimize the structure of the existing lifting and fixing device to improve production efficiency is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a lifting and fixing device, in which both the clamping mechanism and the material supporting mechanism are fixed on the lifting platform of the lifting bracket, and the loading and unloading steps are relatively simple, solving the technical problem of low production efficiency caused by the relatively complex loading and unloading steps of the existing device.

[0006] To achieve the above purpose, the present invention provides a lifting and fixing device, including:

[0007] A lifting bracket, which is vertically liftable, and a lifting platform is fixedly arranged at the top of the lifting bracket;

[0008] A clamping mechanism, which is fixed on the lifting platform, and the clamping mechanism is used for clamping the protruding part of the part to be lifted;

[0009] A material supporting mechanism, which is fixed on the lifting platform, and the material supporting mechanism is used for driving the part to be lifted to lift vertically relative to the clamping mechanism, and the protruding part correspondingly disengages from or enters the clamping mechanism.

[0010] In some embodiments, the clamping mechanism includes:

[0011] A driving jaw, which is slidably arranged on the lifting platform;

[0012] A number of driven jaws, all of which can be slidably arranged on the lifting platform; all the driven jaws and the active jaw are radially distributed;

[0013] A variable-diameter turntable, which can be rotatably arranged on the lifting platform. The variable-diameter turntable is connected to the active jaw through a main linkage rod, and the variable-diameter turntable is connected to all the driven jaws through auxiliary linkage rods;

[0014] An expansion driving member, which is fixedly arranged on the lifting platform. The expansion driving member is fixedly connected to the active jaw through an expansion linkage rod;

[0015] A contraction driving member, which is fixedly arranged on the lifting platform. The contraction driving member is fixedly connected to the active jaw through a contraction linkage rod; The expansion linkage rod and the contraction linkage rod are collinear and are respectively arranged on two opposite sides of the active jaw;

[0016] When the expansion driving member drives the active jaw to move forward through the expansion linkage rod, the active jaw drives the variable-diameter turntable to rotate forward through the main linkage rod. The variable-diameter turntable drives all the driven jaws to move forward through the auxiliary linkage rods. The active jaw and all the driven jaws are separated from each other with the center line of the variable-diameter turntable as the center until the raised part is released;

[0017] When the contraction driving member drives the active jaw to move backward through the contraction linkage rod, the active jaw drives the variable-diameter turntable to rotate backward through the main linkage rod. The variable-diameter turntable drives all the driven jaws to move backward through the auxiliary linkage rods. The active jaw and all the driven jaws are gathered together with the center line of the variable-diameter turntable as the center until the raised part is clamped.

[0018] In some embodiments, the material supporting mechanism includes a number of groups of supporting components, and all the supporting components are annularly distributed on the outer periphery of the clamping mechanism;

[0019] Each group of supporting components includes a supporting platform and a supporting driving member fixedly arranged between the supporting platform and the lifting platform. The supporting driving member is used to drive the supporting platform to lift relative to the clamping mechanism;

[0020] The highest rising position of the supporting platform is higher than the clamping mechanism, and the lowest descending position of the supporting platform is lower than the clamping mechanism.

[0021] In some embodiments, the lifting bracket includes:

[0022] A bottom base, which is parallel to the lifting platform;

[0023] An outer frame, one end of which is slidably connected to the bottom base through a bottom slide and the other end is rotatably connected to the lifting platform;

[0024] The inner frame is located within the outer frame, and the inner frame is cross-rotationally connected to the outer frame through an intermediate rotating shaft; one end of the inner frame is slidably connected to the lifting platform through a top slider, and the other end is rotationally connected to the bottom base.

[0025] In some embodiments, the bottom base is fixedly provided with a bottom slide rail, and the bottom slide rail is slidably engaged with the bottom slider; the bottom base is fixedly provided with a first limit seat and a second limit seat, and the first limit seat and the second limit seat are respectively located at both ends of the bottom slide rail;

[0026] When the lifting platform rises to the highest position, the bottom slider abuts against the first limit seat; when the lifting platform descends to the lowest position, the bottom slider abuts against the second limit seat.

[0027] In some embodiments, the lifting bracket further includes a lifting drive member fixedly provided on the bottom base and fixedly connected to the bottom slider; further included are:

[0028] A lifting height detection member for detecting the current lifting height of the lifting platform and feeding back a signal to the controller;

[0029] The controller is used to determine whether the current lifting height is equal to the set lifting height. If so, a stop instruction is sent to the lifting drive member, the lifting drive member stops telescoping, the angle between the inner frame and the outer frame remains unchanged, and the lifting platform remains stationary;

[0030] The controller is used to determine whether the current lifting height is less than the set lifting height. If so, a rising instruction is sent to the lifting drive member, the lifting drive member retracts, the angle between the inner frame and the outer frame is reduced through the bottom slider, and the lifting platform rises;

[0031] The controller is used to determine whether the current lifting height is greater than the set lifting height. If so, a descending instruction is sent to the lifting drive member, the lifting drive member extends, the angle between the inner frame and the outer frame is increased through the bottom slider, and the lifting platform descends.

[0032] In some embodiments, further included are:

[0033] A receiving position detection member for detecting whether the receiving platform reaches the receiving position and feeding back a signal to the controller;

[0034] The controller is used to determine whether the current lifting height is equal to the set lifting height. If so, the controller sends a receiving instruction to the receiving drive member, and the receiving drive member drives the receiving platform to rise relative to the clamping mechanism;

[0035] The controller is used to determine whether the supporting platform has risen to the material receiving position. If so, it sends a waiting material instruction to the supporting driving member, and the supporting driving member stops telescoping, and the supporting platform stays at the material receiving position; if not, it continues to send a material receiving instruction to the supporting driving member, and the supporting driving member drives the supporting platform to continue rising relative to the clamping mechanism.

[0036] In some embodiments, it further includes:

[0037] A supporting pressure detection member, which is used to detect whether the piece to be lifted is placed on the supporting platform and feedback a signal to the controller;

[0038] The controller is used to determine whether the piece to be lifted is placed on the supporting platform. If so, it sends a blanking instruction to the supporting driving member, and the supporting driving member drives the supporting platform to descend relative to the clamping mechanism; if not, it sends a waiting material instruction to the supporting driving member, and the supporting platform continues to stay at the material receiving position.

[0039] In some embodiments, it further includes:

[0040] A feeding state detection member, which is used to detect whether the convex part has entered the clamping mechanism and feedback a signal to the controller;

[0041] The controller is used to determine whether the convex part has entered the clamping mechanism. If so, it sends a clamping material instruction to the expanding driving member, and the expanding driving member drives the active clamping jaw to drive all the driven clamping jaws to clamp the convex part through the variable diameter turntable; if not, it sends a blanking instruction to the supporting driving member, and the supporting driving member drives the supporting platform to continue descending.

[0042] In some embodiments, it further includes:

[0043] A material loosening state detection member, which is used to detect whether the active clamping jaw and all the driven clamping jaws have loosened the convex part and feedback a signal to the controller;

[0044] A discharging position detection member, which is used to detect whether the supporting platform has reached the discharging position and feedback a signal to the controller;

[0045] The controller is used to send the received discharging instruction to the contracting driving member, and the contracting driving member drives the active clamping jaw to drive all the driven clamping jaws to loosen the convex part through the variable diameter turntable;

[0046] The controller is used to determine whether the active clamping jaw and all the driven clamping jaws have loosened the convex part. If so, it sends a supporting material instruction to the supporting driving member, and the supporting driving member drives the supporting platform to rise relative to the clamping mechanism; if not, it sends a pending instruction to the supporting driving member, and the supporting platform continues to stay at the material receiving position;

[0047] The controller is used to determine whether the supporting platform has risen to the unloading position. If so, a reset command is sent to the supporting drive member and the lifting drive member. The supporting drive member drives the supporting platform to descend relative to the clamping mechanism. The lifting drive member increases the angle between the inner frame and the outer frame through the bottom slide, and the lifting platform descends.

[0048] Compared with the background technology, the lifting and fixing device in the present invention comprises a lifting bracket, a clamping mechanism and a supporting mechanism, and the clamping mechanism and the supporting mechanism are both fixedly arranged on the lifting platform of the lifting bracket.

[0049] When loading, first adjust the height of the lifting bracket, then place the part to be lifted on the supporting mechanism, then the supporting mechanism descends relative to the clamping mechanism until the raised part of the part to be lifted enters the clamping mechanism, and finally the clamping mechanism clamps the raised part to fix the part to be lifted. When unloading, the clamping mechanism first releases the raised part of the part to be lifted, and then the supporting mechanism drives the part to be lifted to rise relative to the clamping mechanism until the part to be lifted is separated from the clamping mechanism, so that the part to be lifted can be unloaded.

[0050] The loading and unloading steps of the lifting and fixing device in the present invention are relatively simple, the operation is relatively convenient, the production time is significantly shortened, and the manual participation is relatively low, the labor intensity is relatively low, and the production efficiency is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0052] Figure 1 An axonometric diagram of a lifting and fixing device provided in a specific embodiment of the present invention;

[0053] Figure 2 for Figure 1 Assembly drawing of the middle clamping mechanism and the supporting mechanism;

[0054] Figure 3 for Figure 1 Another axonometric view of

[0055] Figure 4 for Figure 1 Front view of

[0056] Figure 5 for Figure 1 Rear view of

[0057] Figure 6 for Figure 1 A top view of

[0058] Figure 7 is the bottom view of Figure 1 ;

[0059] Figure 8 is the left view of Figure 1 ;

[0060] Figure 9 is the right view of Figure 1 ;

[0061] The reference numerals in the drawings are as follows:

[0062] Lifting bracket 1, clamping mechanism 2 and material supporting mechanism 3;

[0063] Lifting platform 11, bottom base 12, outer frame 13, bottom sliding seat 14, inner frame 15, intermediate rotating shaft 16, top sliding seat 17 and lifting driving member 18;

[0064] Bottom slide rail 121, first limit seat 122 and second limit seat 123;

[0065] Active jaw 20, driven jaw 21, variable diameter turntable 22, main linkage rod 23, auxiliary linkage rod 24, expansion driving member 25, expansion link 26, contraction driving member 27, contraction link 28 and jaw support 29;

[0066] Supporting platform 31 and supporting driving member 32. Detailed implementation manners

[0067] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0068] An embodiment of the present invention discloses a lifting and fixing device. As shown in the attached Figures 1 to 9 figures, it includes a lifting bracket 1, a clamping mechanism 2 and a material supporting mechanism 3. The lifting bracket 1 is vertically liftable. A lifting platform 11 is fixedly provided at the top of the lifting bracket 1. The lifting bracket 1 adjusts the height of the lifting platform 11 through lifting. The clamping mechanism 2 is fixedly provided on the lifting platform 11. The clamping mechanism 2 is used to clamp the convex part of the workpiece to be lifted. The workpiece to be lifted can specifically be a vehicle body frame, a bogie and a roof equipment box, etc. The clamping mechanism 2 is used to clamp or release the convex part. The material supporting mechanism 3 is fixedly provided on the lifting platform 11. The material supporting mechanism 3 is used to support the workpiece to be lifted and drive the workpiece to be lifted to move vertically relative to the clamping mechanism 2, so that the convex part is correspondingly separated from or enters the clamping mechanism 2, enabling the material supporting mechanism 3 to cooperate with the clamping mechanism 2 to position the workpiece to be lifted.

[0069] During loading, first adjust the height of the lifting support 1, then place the part to be lifted on the material supporting mechanism 3. Next, the material supporting mechanism 3 descends relative to the clamping mechanism 2 until the protruding part of the part to be lifted enters the clamping mechanism 2. Finally, the clamping mechanism 2 clamps the protruding part to fix the part to be lifted. During unloading, the clamping mechanism 2 first releases the protruding part of the part to be lifted, and then the material supporting mechanism 3 drives the part to be lifted to rise relative to the clamping mechanism 2 until the part to be lifted is separated from the clamping mechanism 2, realizing the unloading of the part to be lifted.

[0070] In the present invention, both the installation step and the unloading step of the lifting and fixing device are relatively simple, the operation is more convenient, the production time is significantly shortened, and the manual participation is low and the labor intensity is small, effectively improving the production efficiency.

[0071] As a preferred embodiment, as shown in the attached Figure 2 figure, the clamping mechanism 2 includes a main clamping jaw 20, a plurality of driven clamping jaws 21, a variable-diameter turntable 22, an expansion driving member and a contraction driving member 27.

[0072] The main clamping jaw 20 is slidably arranged on the lifting platform 11, and all the driven clamping jaws 21 are slidably arranged on the lifting platform 11. All the driven clamping jaws 21 and the main clamping jaw 20 are radially distributed. Specifically, a guiding slide seat is fixedly arranged at the bottom of the main clamping jaw 20 and all the driven clamping jaws 21. The lifting platform 11 is provided with guiding slide rails, and the guiding slide seat is slidably matched with the guiding slide rails. All the guiding slide rails are radially distributed with the center line of the variable-diameter turntable 22 as the center. Naturally, the main clamping jaw 20 and all the driven clamping jaws 21 are also radially distributed with the center line of the variable-diameter turntable 22 as the center, so that the main clamping jaw 20 and all the driven clamping jaws 21 are mutually gathered or separated with the center line of the variable-diameter turntable 22 as the center to correspondingly clamp or release the protruding part. The main clamping jaw 20 and all the driven clamping jaws 21 are both L-shaped. A clamping jaw support 29 is fixedly arranged between the main clamping jaw 20 and the guiding slide seat, and a clamping jaw support 29 is also fixedly arranged between the driven clamping jaw 21 and the guiding slide seat, ensuring that there is a certain vertical distance between the main clamping jaw 20 and all the driven clamping jaws 21 and the lifting platform 11, leaving space for the installation of the protruding part. By adjusting the height of the clamping jaw support 29, it can adapt to protruding parts of different heights to meet the fixing requirements of different types of parts to be lifted. However, no matter what height of the clamping jaw support 29 is adopted, it is necessary to ensure that the main clamping jaw 20 and all the driven clamping jaws 21 are at the same height to ensure uniform force on each part where the protruding part is clamped. Only one main clamping jaw 20 is provided, and two driven clamping jaws 21 can be provided. Of course, the number of driven clamping jaws 21 can also be adaptively adjusted according to the specifications of the part to be lifted.

[0073] The variable-diameter turntable 22 is rotatably arranged on the lifting platform 11. The variable-diameter turntable 22 is connected to the active clamping jaw 20 through the main linkage rod 23, and the variable-diameter turntable 22 is connected to all the driven clamping jaws 21 through the secondary linkage rods 24. When the variable-diameter turntable 22 is pushed and pulled by the active clamping jaw 20, it drives all the driven clamping jaws 21 to slide radially by rotating clockwise or counterclockwise, so as to adjust the radial distance between each clamping jaw and the center line of the variable-diameter turntable 22. Specifically, the variable-diameter turntable 22 is triangular. One of the apex angles of the variable-diameter turntable 22 is connected to the active clamping jaw 20 through the main linkage rod, and the other two apex angles are respectively connected to two driven clamping jaws 21 through the secondary linkage rods 24 in one-to-one correspondence. Both ends of the main linkage rod 23 are respectively hinged to the variable-diameter turntable 22 and the active clamping jaw 20 through pins, and both ends of the secondary linkage rod 24 are respectively hinged to the variable-diameter turntable 22 and the driven clamping jaw 21 through pins. The main linkage rod 23 and all the secondary linkage rods 24 have the same length.

[0074] The expansion driving member 25 is fixedly arranged on the lifting platform 11. The expansion driving member 25 is fixedly connected to the active clamping jaw 20 through the expansion linkage rod 26, and is used to drive the active clamping jaw 20 to perform a linear motion centered on the center line of the variable-diameter turntable 22. Specifically, the expansion driving member 25 can specifically be a telescopic cylinder. One end of the expansion linkage rod 26 is rotatably connected to the piston rod of the expansion driving member through a rotating shaft, and the other end is rotatably connected to the clamping jaw support 29 at the bottom of the active clamping jaw 20 through a rotating shaft. The expansion linkage rod 26 is located above the variable-diameter turntable 22 to avoid interference between the two.

[0075] The contraction driving member 27 is fixedly arranged on the lifting platform 11. The contraction driving member 27 is fixedly connected to the active clamping jaw 20 through the contraction linkage rod 28, and is used to drive the driven clamping jaws 21 to perform a linear motion centered on the center line of the variable-diameter turntable 22. Specifically, the contraction driving member 27 can also be a telescopic cylinder. One end of the contraction linkage rod 28 is rotatably connected to the piston rod of the contraction driving member 27 through a rotating shaft, and the other end is rotatably connected to the clamping jaw support 29 at the bottom of the active clamping jaw 20 through a rotating shaft. Both the expansion linkage rod 26 and the contraction linkage rod 28 are specifically of a U-shaped structure.

[0076] It should be particularly noted that the expansion linkage rod 26 and the contraction linkage rod 28 are arranged collinearly and are respectively arranged on two opposite sides of the active clamping jaw 20; when the expansion driving member 25 extends towards the center line of the variable-diameter turntable 22, the contraction driving member 27 retracts away from the center line of the variable-diameter turntable 22; when the expansion driving member 25 retracts away from the center line of the variable-diameter turntable 22, the contraction driving member 27 extends towards the center line of the variable-diameter turntable 22; that is to say, the expansion driving member and the contraction driving member 27 are in a "one-extending-and-one-retracting" linkage structure.

[0077] When the expansion driving member 25 drives the active jaw 20 to move in the forward direction (i.e., away from the center line of the diameter-changing turntable 22) through the expansion link 26, at this time, the expansion driving member 25 extends outwards and the contraction driving member 27 retracts inwards. The expansion driving member 25 drives the active jaw 20 to slide away from the center line of the diameter-changing turntable 22 through the expansion link 26, and the contraction driving member 27 also drives the active jaw 20 to slide away from the center line of the diameter-changing turntable 22 through the contraction link 28. The active jaw 20 drives the diameter-changing turntable 22 to rotate in the forward direction (i.e., clockwise rotation) through the main linkage rod 23, and the diameter-changing turntable 22 drives all the driven jaws 21 to move in the forward direction (i.e., away from the center line of the diameter-changing turntable 22) through the auxiliary linkage rod 24. The active jaw 20 and all the driven jaws 21 are separated from each other with the center line of the diameter-changing turntable 22 as the center, and the clamping mechanism 2 releases the convex part.

[0078] When the contraction driving member 27 drives the active jaw 20 to move in the reverse direction (i.e., towards the center line of the diameter-changing turntable 22) through the contraction link 28, at this time, the expansion driving member 25 retracts inwards and the contraction driving member 27 extends outwards. The expansion driving member 25 drives the active jaw 20 to slide towards the center line of the diameter-changing turntable 22 through the expansion link 26, and the contraction driving member 27 also drives the active jaw 20 to slide towards the center line of the diameter-changing turntable 22 through the contraction link 28. The active jaw 20 drives the diameter-changing turntable 22 to rotate in the reverse direction (i.e., counterclockwise rotation) through the main linkage rod 23, and the diameter-changing turntable 22 drives all the driven jaws 21 to move in the reverse direction (i.e., towards the center line of the diameter-changing turntable 22) through the auxiliary linkage rod 24. The active jaw 20 and all the driven jaws 21 gather together with the center line of the diameter-changing turntable 22 as the center, and the clamping mechanism 2 clamps the convex part.

[0079] As a preferred embodiment, the material supporting mechanism 3 includes a plurality of groups of supporting components, and all the supporting components are annularly distributed on the outer periphery of the clamping mechanism 2 to ensure that each group of supporting components evenly supports each part of the workpiece to be lifted, so that the workpiece to be lifted is evenly stressed during the lifting process, reducing the risk of the workpiece to be lifted tipping over. Each group of supporting components includes a supporting platform 31 and a supporting driving member 32 fixedly arranged between the supporting platform 31 and the lifting platform 11. The supporting driving member 32 is used to drive the supporting platform 31 to move up and down relative to the clamping mechanism 2. The supporting driving member 32 can specifically be a telescopic cylinder, and its telescopic direction is perpendicular to the lifting platform 11. The highest rising position of the supporting platform 31 is higher than the clamping mechanism 2, ensuring that the convex part of the workpiece to be lifted can be completely separated from the clamping mechanism 2 under the support of each group of supporting components. The lowest descending position of the supporting platform 31 is lower than the clamping mechanism 2, ensuring that the convex part can completely enter the clamping mechanism 2 to avoid insecure clamping.

[0080] As a preferred embodiment, the lifting bracket 1 includes a bottom base 12, an outer frame 13 and an inner frame 15. The bottom base 12 is parallel to the lifting platform 11. The inner frame 15 and the outer frame 13 are cross-rotationally connected through an intermediate rotating shaft 16. One end of the outer frame 13 is slidably connected to the bottom base 12 through a bottom slide 14, and the other end is rotationally connected to the lifting platform 11. The inner frame 15 is located inside the outer frame 13. One end of the inner frame 15 is slidably connected to the lifting platform 11 through a top slide 17, and the other end is rotationally connected to the bottom base 12. By adjusting the angle between the outer frame 13 and the inner frame 15, the lifting height of the lifting platform 11 is adjusted to ensure that the lifting of the lifting platform 11 is more stable, thereby improving the stability of both the clamping mechanism 2 and the material supporting mechanism 3. The outer frame 13 includes two parallel outer wavy rods. The two ends of the two outer wavy rods are respectively fixed by a transverse rotating shaft, and the middle parts of the two outer wavy rods are fixed together by a transverse reinforcing rod. The structure of the inner frame 15 is the same as that of the outer frame 13 and will not be elaborated here.

[0081] As a preferred embodiment, the bottom base 12 is fixedly provided with a bottom slide rail 121, and the bottom slide rail 121 is slidably matched with the bottom slide 14; the bottom base 12 is fixedly provided with a first limit seat 122 and a second limit seat 123. The first limit seat 122 and the second limit seat 123 are respectively located at both ends of the bottom slide rail 121; when the lifting platform 11 rises to the highest position, the bottom slide 14 abuts against the first limit seat 122, which can not only make the lifting platform 11 stay stably at the highest position, but also prevent the outer frame 13 and the inner frame 15 from rotating excessively and colliding with each other. When the lifting platform 11 descends to the lowest position, the bottom slide 14 abuts against the second limit seat 123, which can not only make the lifting platform 11 stay stably at the lowest position, but also prevent the outer frame 13 and the inner frame 15 from rotating excessively and colliding with each other.

[0082] Specifically, both the first limit seat 122 and the second limit seat 123 are L-shaped supports, and both are fixed to the bottom base 12 by bolts.

[0083] As a preferred embodiment, the lifting bracket 1 further includes a lifting driving member 18 fixedly provided on the bottom base 12 and fixedly connected to the bottom slide 14, which can specifically be a telescopic cylinder. When the lifting driving member 18 extends outwards, the bottom slide 14 slides in a direction away from the inner frame 15, the angle between the inner frame 15 and the outer frame 13 becomes larger, and the lifting platform 11 descends. When the lifting driving member 18 retracts inwards, the bottom slide 14 slides in a direction close to the inner frame 15, the angle between the inner frame 15 and the outer frame 13 becomes smaller, and the lifting platform 11 rises.

[0084] The lifting and fixing device further includes a lifting height detection component for detecting the current lifting height of the lifting platform 11, which can specifically be a height sensor. The lifting height detection component feeds back the detected current lifting height to the controller in real time.

[0085] The controller determines whether the current lifting height is equal to the set lifting height. If so, it sends a stop command to the lifting drive member 18, and the lifting drive member 18 stops telescoping. The angle between the inner frame 15 and the outer frame 13 remains unchanged, the lifting platform 11 remains stationary, and the lifting platform 11 stays at the set lifting height.

[0086] The controller determines whether the current lifting height is less than the set lifting height. If so, it sends a rising command to the lifting drive member 18, and the lifting drive member 18 retracts. By means of the bottom sliding seat 14, the angle between the inner frame 15 and the outer frame 13 is reduced, and the lifting platform 11 realizes automatic rising.

[0087] The controller determines whether the current lifting height is greater than the set lifting height. If so, it sends a descending command to the lifting drive member 18, and the lifting drive member 18 extends. By means of the bottom sliding seat 14, the angle between the inner frame 15 and the outer frame 13 is increased, and the lifting platform 11 realizes automatic descending.

[0088] In the present invention, the height of the lifting platform 11 is detected to automatically adjust the height of the lifting platform 11 in a closed-loop control manner, with relatively high control precision, avoiding subsequent problems such as improper clamping or inaccurate material receiving, reducing the failure rate, and improving the reliability.

[0089] As a preferred embodiment, the lifting and fixing device further includes a material receiving position detection component for detecting whether the supporting platform 31 reaches the material receiving position, which can specifically be an unknown sensor. The material receiving position detection component feeds back the current position of the supporting platform 31 to the controller in real time.

[0090] The controller determines whether the current lifting height is equal to the set lifting height. If so, the controller sends a material receiving command to the supporting drive member 32, and the supporting drive member 32 drives the supporting platform 31 to rise relative to the clamping mechanism 2, and the material supporting mechanism 3 automatically rises to receive the material.

[0091] The controller determines whether the supporting platform 31 has risen to the material receiving position. If so, it sends an equalizing material command to the supporting drive member 32, and the supporting drive member 32 stops telescoping, and the supporting platform 31 stays at the material receiving position; if not, it continues to send a material receiving command to the supporting drive member 32, and the supporting drive member 32 drives the supporting platform 31 to continue rising relative to the clamping mechanism 2.

[0092] The present invention automatically controls the automatic upward movement of the material supporting mechanism 3 in a closed-loop control manner by detecting the upward position of the supporting platform 31, with relatively high control accuracy, enabling accurate material receiving, reducing the large impact caused by an excessive height difference between the component to be lifted and the material supporting mechanism 3, and ensuring more reliable operation of the entire device.

[0093] As a preferred embodiment, the lifting and fixing device further includes a supporting pressure detection component, which is used to detect whether the component to be lifted is placed on the supporting platform 31, and specifically can be a pressure sensor. The supporting pressure detection component feeds back the real-time signal of the material receiving state of the supporting platform 31 to the controller.

[0094] The controller determines whether the component to be lifted is placed on the supporting platform 31. If so, it sends a blanking instruction to the supporting driving component 32, and the supporting driving component 32 drives the supporting platform 31 to automatically descend relative to the clamping mechanism 2; if not, it sends an equalizing instruction to the supporting driving component 32, and the supporting platform 31 continues to stay at the material receiving position.

[0095] The present invention controls the automatic downward material discharging of the material supporting mechanism 3 according to the material discharging state of the supporting platform 31, with a high degree of automation, low manual participation, and improved production efficiency.

[0096] As a preferred embodiment, the lifting and fixing device further includes a feeding state detection component, which is used to detect whether the protruding part enters the clamping mechanism 2, and specifically can be an image recognition device such as a camera or an obstacle sensor. The feeding state detection component feeds back the real-time signal of the feeding state of the clamping mechanism to the controller.

[0097] The controller determines whether the protruding part enters the clamping mechanism 2. If so, it sends a clamping instruction to the expansion driving component 25, and the expansion driving component 25 drives the active clamping jaw 20 to drive all the driven clamping jaws 21 to clamp the protruding part through the variable-diameter turntable 22; if not, it sends a blanking instruction to the supporting driving component 32, and the supporting driving component 32 drives the supporting platform 31 to continue descending.

[0098] The present invention controls the automatic clamping of the clamping mechanism according to the feeding state of the clamping mechanism 2, with a high degree of automation and relatively high production efficiency.

[0099] As a preferred embodiment, the lifting and fixing device further includes a material loosening state detection component and a discharging position detection component. The material loosening state detection component is used to detect whether the active clamping jaw 20 and all the driven clamping jaws 21 loosen the protruding part, and specifically can be a pressure sensor or a contact sensor. The material loosening state detection component feeds back the real-time material discharging state of the clamping mechanism to the controller. The discharging position detection component is used to detect whether the supporting platform 31 reaches the discharging position, and specifically can be a position sensor or a proximity switch. The discharging position detection component feeds back the current position of the supporting platform 31 to the controller in real time.

[0100] When the controller sends the received discharging instruction to the contraction driving member 27, the contraction driving member 27 drives the active jaw 20 to drive all the driven jaws 21 to release the convex part through the diameter-changing turntable 22, realizing automatic discharging.

[0101] The controller judges whether the active jaw 20 and all the driven jaws 21 release the convex part. If so, it sends a material supporting instruction to the material supporting driving member 32, and the material supporting driving member 32 drives the material supporting platform 31 to rise automatically relative to the clamping mechanism 2; if not, it sends a pending instruction to the material supporting driving member 32, and the material supporting platform 31 continues to stay at the material receiving position.

[0102] The controller judges whether the material supporting platform 31 has risen to the discharging position. If so, it sends a reset instruction to the material supporting driving member 32 and the lifting driving member 18. The material supporting driving member 32 drives the material supporting platform 31 to descend relative to the clamping mechanism 2, and the lifting driving member 18 increases the included angle between the inner frame 15 and the outer frame 13 through the bottom sliding seat 14, and the lifting platform 11 descends.

[0103] The present invention can realize continuous automatic discharging, automatic material supporting rising and automatic reset descending, with higher automation degree, improved control precision and further improved production efficiency.

[0104] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

Claims

1. A lifting and fixing device, characterized in that, Comprising: A lifting bracket (1), the lifting bracket (1) being vertically liftable, and a lifting platform (11) being fixedly provided at the top of the lifting bracket (1); A clamping mechanism (2), the clamping mechanism (2) being fixedly provided on the lifting platform (11), and the clamping mechanism (2) being used for clamping the convex part of the piece to be lifted; A material supporting mechanism (3), the material supporting mechanism (3) being fixedly provided on the lifting platform (11), and the material supporting mechanism (3) being used for driving the piece to be lifted to move vertically relative to the clamping mechanism (2), and the convex part correspondingly disengaging from or entering the clamping mechanism (2).

2. The lifting and fixing device according to claim 1, characterized in that, The clamping mechanism (2) includes: A driving jaw (20), the driving jaw (20) being slidably arranged on the lifting platform (11); A plurality of driven jaws (21), all the driven jaws (21) being slidably arranged on the lifting platform (11); all the driven jaws (21) and the driving jaw (20) being radially distributed; A variable-diameter turntable (22), the variable-diameter turntable (22) being rotatably arranged on the lifting platform (11), the variable-diameter turntable (22) being connected to the driving jaw (20) through a main linkage rod (23), and the variable-diameter turntable (22) being connected to all the driven jaws (21) through sub-linkage rods (24); An expansion driving member (25), the expansion driving member (25) being fixedly provided on the lifting platform (11), and the expansion driving member (25) being fixedly connected to the driving jaw (20) through an expansion linkage rod (26); A contraction driving member (27), the contraction driving member (27) being fixedly provided on the lifting platform (11), and the contraction driving member (27) being fixedly connected to the driving jaw (20) through a contraction linkage rod (28); the expansion linkage rod (26) and the contraction linkage rod (28) are collinearly arranged and are respectively arranged on two opposite sides of the driving jaw (20); When the expansion driving member (25) drives the driving jaw (20) to move forward through the expansion linkage rod (26), the driving jaw (20) drives the variable-diameter turntable (22) to rotate forward through the main linkage rod (23), the variable-diameter turntable (22) drives all the driven jaws (21) to move forward through the sub-linkage rods (24), and the driving jaw (20) and all the driven jaws (21) are separated from each other with the center line of the variable-diameter turntable (22) as the center until the convex part is released; When the contraction driving member (27) drives the driving jaw (20) to move backward through the contraction linkage rod (28), the driving jaw (20) drives the variable-diameter turntable (22) to rotate backward through the main linkage rod (23), the variable-diameter turntable (22) drives all the driven jaws (21) to move backward through the sub-linkage rods (24), and the driving jaw (20) and all the driven jaws (21) are gathered together with the center line of the variable-diameter turntable (22) as the center until the convex part is clamped.

3. The lifting and fixing device according to claim 2, characterized in that The stock supporting mechanism (3) includes several groups of supporting components, and all the supporting components are annularly distributed on the outer periphery of the clamping mechanism (2); Each group of the supporting components includes a supporting platform (31) and a supporting driving member (32) fixedly arranged between the supporting platform (31) and the lifting platform (11), and the supporting driving member (32) is used to drive the supporting platform (31) to lift relative to the clamping mechanism (2); The highest rising position of the supporting platform (31) is set higher than the clamping mechanism (2), and the lowest descending position of the supporting platform (31) is set lower than the clamping mechanism (2).

4. The lifting and fixing device according to claim 3, characterized in that, The lifting bracket (1) includes: A bottom base (12), and the bottom base (12) is parallel to the lifting platform (11); An outer frame (13), one end of the outer frame (13) is slidably connected to the bottom base (12) through a bottom slide block (14), and the other end is rotatably connected to the lifting platform (11); An inner frame (15), the inner frame (15) is located inside the outer frame (13), and the inner frame (15) and the outer frame (13) are cross-rotatably connected through an intermediate rotating shaft (16); one end of the inner frame (15) is slidably connected to the lifting platform (11) through a top slide block (17), and the other end is rotatably connected to the bottom base (12).

5. The lifting and fixing device according to claim 4, characterized in that The bottom base (12) is fixedly provided with a bottom slide rail (121), and the bottom slide rail (121) is slidably matched with the bottom slide block (14); the bottom base (12) is fixedly provided with a first limit seat (122) and a second limit seat (123), and the first limit seat (122) and the second limit seat (123) are respectively located at both ends of the bottom slide rail (121); When the lifting platform (11) rises to the highest position, the bottom slide block (14) abuts against the first limit seat (122); when the lifting platform (11) descends to the lowest position, the bottom slide block (14) abuts against the second limit seat (123).

6. The lifting and fixing device according to claim 5, wherein, The lifting bracket (1) further includes a lifting driving member (18) fixedly arranged on the bottom base (12) and fixedly connected to the bottom slide block (14); it further includes: A lifting height detection member, which is used to detect the current lifting height of the lifting platform (11) and feedback a signal to the controller; The controller is used to judge whether the current lifting height is equal to the set lifting height. If so, a stop instruction is sent to the lifting driving member (18), the lifting driving member (18) stops telescoping, the included angle between the inner frame (15) and the outer frame (13) remains unchanged, and the lifting platform (11) remains stationary; The controller is used to judge whether the current lifting height is less than the set lifting height. If so, it sends an upward instruction to the lifting driving member (18). The lifting driving member (18) retracts, and the included angle between the inner frame (15) and the outer frame (13) is reduced through the bottom sliding seat (14), and the lifting platform (11) rises. The controller is used to judge whether the current lifting height is greater than the set lifting height. If so, it sends a downward instruction to the lifting driving member (18). The lifting driving member (18) extends, and the included angle between the inner frame (15) and the outer frame (13) is increased through the bottom sliding seat (14), and the lifting platform (11) descends.

7. The lifting and fixing device according to claim 6, wherein, It further includes: A receiving position detecting member, which is used to detect whether the supporting platform (31) reaches the receiving position and feedback a signal to the controller. The controller is used to judge whether the current lifting height is equal to the set lifting height. If so, the controller sends a receiving instruction to the supporting driving member (32), and the supporting driving member (32) drives the supporting platform (31) to rise relative to the clamping mechanism (2). The controller is used to judge whether the supporting platform (31) has risen to the receiving position. If so, it sends a waiting instruction to the supporting driving member (32), and the supporting driving member (32) stops telescoping, and the supporting platform (31) stays at the receiving position; if not, it continues to send a receiving instruction to the supporting driving member (32), and the supporting driving member (32) drives the supporting platform (31) to continue rising relative to the clamping mechanism (2).

8. The lifting and fixing device according to claim 7, characterized in that It further includes: A supporting pressure detecting member, which is used to detect whether the part to be lifted is placed on the supporting platform (31) and feedback a signal to the controller. The controller is used to judge whether the part to be lifted is placed on the supporting platform (31). If so, it sends a blanking instruction to the supporting driving member (32), and the supporting driving member (32) drives the supporting platform (31) to descend relative to the clamping mechanism (2); if not, it sends the waiting instruction to the supporting driving member (32), and the supporting platform (31) continues to stay at the receiving position.

9. The lifting and fixing device according to claim 8, characterized in that, It further includes: A feeding state detecting member, which is used to detect whether the protruding part enters the clamping mechanism (2) and feedback a signal to the controller. The controller is used to judge whether the protruding part enters the clamping mechanism (2). If so, it sends a clamping instruction to the expanding driving member (25), and the expanding driving member (25) drives the active clamping jaw (20) to drive all the driven clamping jaws (21) to clamp the protruding part through the variable-diameter turntable (22); if not, it sends the blanking instruction to the supporting driving member (32), and the supporting driving member (32) drives the supporting platform (31) to continue descending.

10. The lifting and fixing device according to claim 9, characterized in that, It further includes: The loose material state detection component is used to detect whether the active clamping jaw (20) and all the driven clamping jaws (21) release the raised part and feed back a signal to the controller; The unloading position detection component is used to detect whether the supporting platform (31) reaches the unloading position and feed back a signal to the controller; The controller is used to send the received unloading instruction to the contraction driving component (27), and the contraction driving component (27) drives the active clamping jaw (20) to drive all the driven clamping jaws (21) to release the raised part through the variable-diameter turntable (22); The controller is used to judge whether the active clamping jaw (20) and all the driven clamping jaws (21) release the raised part. If so, it sends a material supporting instruction to the material supporting driving component (32), and the material supporting driving component (32) drives the supporting platform (31) to rise relative to the clamping mechanism (2); if not, it sends a pending instruction to the material supporting driving component (32), and the supporting platform (31) continues to stay at the material receiving position; The controller is used to judge whether the supporting platform (31) rises to the unloading position. If so, it sends a reset instruction to the material supporting driving component (32) and the lifting driving component (18). The material supporting driving component (32) drives the supporting platform (31) to descend relative to the clamping mechanism (2), and the lifting driving component (18) increases the angle between the inner frame (15) and the outer frame (13) through the bottom sliding seat (14), and the lifting platform (11) descends.

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