Multi-group inner and outer spring synchronous grabbing device

Abstract

The utility model discloses a synchronous gripping device for multiple groups of inner and outer springs. The synchronous gripping device comprises a mounting base plate, a sliding mechanism, a limiting mechanism, a hoisting mechanism, a proximity switch mechanism and multiple groups of gripping units, the sliding mechanism, the limiting mechanism and the hoisting mechanism are located above the mounting base plate, and the hoisting mechanism is used for hoisting and transporting the device; the sliding mechanism and the limiting mechanism are matched to perform sliding fine adjustment on the position of the device; the proximity switch mechanism and the multiple sets of grabbing units are vertically installed below the installation base plate, the positions of the grabbing units are matched with the placing positions of the multiple sets of inner and outer springs on the to-be-transferred tray, and the grabbing units are used for synchronously grabbing the multiple sets of inner and outer springs. The single grabbing unit synchronously grabs inner and outer springs, the multiple sets of grabbing units synchronously grab multiple sets of inner and outer springs at the same time, and the problems that an existing manual carrying mode and an existing automatic grabbing tool are low in efficiency and large in manual labor intensity, and the existing automatic grabbing tool is high in falling probability, unstable in clamping and the like are solved.

Description

Technical Field

[0001] The utility model relates to a grabbing device, in particular to a synchronous grabbing device with multiple groups of inner and outer springs. Background Art

[0002] In the maintenance of railway freight cars, the work of grabbing and carrying inner and outer springs is often involved. This work is mainly done by pure manual operation and preliminary automated handling. At present, manual handling of inner and outer springs (large and small springs) is the main method, and some of them have achieved low automation, which urgently needs industrial upgrading. The specific situation is as follows:

[0003] Regarding manual handling: manual handling is extremely labor-intensive; due to the size and weight of the pillow spring, only one inner spring or outer spring can be carried at a time. Generally, there are 9 sets of inner and outer springs in a pallet, and it takes about 18 repeated operations to complete the unloading of a tooling pallet. The heaviest single spring is about 10kg. According to the existing section maintenance vehicles, 60 pallets a day are estimated, and the personnel carry 10,800kg a day, which is extremely labor-intensive. Such intensity makes it impossible to improve efficiency. In addition, due to manual handling by operators, there will be accidents such as steel springs falling and being smashed.

[0004] The initial automated handling method involves the automated equipment grabbing the inner and outer springs, which is mostly based on a single grabbing method for the inner or outer springs. In addition, there is a certain problem of falling inner and outer springs when grabbing them alone:

[0005] Some automatic spring handling equipment on the market only grabs inner springs or outer springs, imitating the manual operation method. The handling rhythm cannot be increased too fast, and the surface of the spring is relatively smooth. The clamping claws are easy to fall during the transfer. Some of these equipments use methods such as adding soft materials to increase the grasping friction, and the materials are easy to wear and have obvious defects; some of these equipments use the clamping claws to make them outward or inward to avoid the problem of falling, which will cause some of the clamping claws to be suspended and not in contact with the spring when clamping the spring, resulting in the clamped material tilting, unstable clamping, inaccurate placement and other problems; some of these equipments use the clamping claws with hooks, which can easily cause the material to hang or carry when exiting; some of these equipments use the contact surface of the clamping claws and the spring to be made into a tooth shape. In this way, the contact points of the three claws are different, which will still cause the clamped material to tilt and fall easily, and lose the self-centering function, resulting in inaccurate positioning.

[0006] The above-mentioned existing equipment for grabbing a single inner spring or outer spring already has many problems. It becomes even more difficult to grab the inner and outer springs synchronously, and to grab multiple groups of inner and outer springs synchronously at the same time. The falling problem of this method (synchronous grabbing of inner and outer springs, and to grab multiple groups of inner and outer springs synchronously at the same time) cannot be completely solved, and has entered a bottleneck area, which has seriously restricted the development of the automated transfer of inner and outer springs. Summary of the invention

[0007] Since the existing purely manual operation methods and preliminary automated handling methods are relatively immature, it is difficult to upgrade the industry. Even with preliminary automated equipment, there is no breakthrough in efficiency and there is still a problem of falling. Therefore, the utility model is committed to breaking through the existing bottleneck. The purpose is to provide a synchronous grasping device for multiple sets of inner and outer springs, to achieve synchronous grasping of multiple sets of inner and outer springs, with a design goal of increasing production efficiency by at least 9 times.

[0008] The technical solution of the utility model is:

[0009] A synchronous grasping device for multiple groups of inner and outer springs comprises an installation base plate, a sliding mechanism, a limiting mechanism, a hoisting mechanism, a proximity switch mechanism and multiple groups of grasping units; the sliding mechanism, the limiting mechanism and the hoisting mechanism are located above the installation base plate, and the hoisting mechanism is used for hoisting and transporting the device; the sliding mechanism and the limiting mechanism cooperate to perform sliding fine-tuning on the position of the device; the proximity switch mechanism and the multiple groups of grasping units are vertically installed below the installation base plate, and the position of each group of grasping units matches the placement position of multiple groups of inner and outer springs on a pallet to be transferred, so as to synchronously grasp multiple groups of inner and outer springs.

[0010] Furthermore, the grasping unit includes a first cylinder, a second cylinder, an outer clamp, a connecting plate, a connecting port, a first straight joint, a second straight joint and an inner clamp; the connecting port is connected and fixed to the mounting base plate upward; the first cylinder is fixed to the connecting port downward, and the first cylinder is connected to the first straight joint; the outer clamp is installed downwardly on the first cylinder for clamping the outer spring; the second cylinder is connected to the lower part of the first cylinder through a connecting plate, and the second cylinder is connected to the second straight joint, and the inner clamp is installed downwardly on the second cylinder for supporting and grasping the inner spring; the inner clamp is located inside the outer clamp.

[0011] Furthermore, three outer clamps are evenly distributed under the first cylinder; and three inner clamps are evenly distributed under the second cylinder.

[0012] Furthermore, a round head screw is provided through any one of the three outer clamping jaws and any one of the three inner clamping jaws to prevent the outer spring or the inner spring from falling off or being smoothly detached.

[0013] Furthermore, the head of the round head screw is set to be a spherical surface, and the spherical surface contacts the curved surface of the outer spring or the inner spring, which facilitates smooth guidance of the spherical surface and the curved surface of the inner spring or the outer spring and limits the inner spring or the outer spring.

[0014] Furthermore, the body of the round head screw is provided with threads; the tail of the round head screw is provided with an open groove; the round head screw is located on the outer clamping jaw or the inner clamping jaw and is in a middle area in contact with the outer spring or the inner spring.

[0015] Furthermore, the sliding mechanism includes a sliding pressure plate and a connecting seat, two sliding pressure plates parallel to each other are fixed above the mounting base plate, and the connecting seat can be slidably inserted between the two sliding pressure plates; the limiting mechanism of the sliding mechanism is installed on both sides of the mounting base plate and located in the moving direction of the connecting seat.

[0016] Furthermore, the limiting mechanism includes a limiting block and an adjusting bolt. The limiting block is fixed on the mounting base plate. The limiting block is vertically provided with an adjusting bolt, and the connecting seat is tightened and limited by the adjusting bolt.

[0017] Furthermore, the proximity switch mechanism: a fixed block is arranged on the mounting substrate, an adjustable connecting rod is installed on the fixed block and in a downward direction of the mounting substrate, and a proximity switch is arranged on the adjustable connecting rod.

[0018] Furthermore, the hoisting mechanism is configured as a hoisting ring, and the hoisting ring is arranged above both ends of the mounting base plate.

[0019] The utility model first solves the problem of synchronous grasping of inner and outer springs by the clamps. According to the conventional material placement form of the conventional large spring sleeve small spring, and in view of the situation that the commonly used pillow spring production line uses a tray to load 9 groups of inner and outer springs at a time, the utility model adopts the inner clamp to support the small spring (inner spring), and the outer clamp is configured on the outside of the inner clamp, and the outer clamp adopts the method of holding the outer side of the outer spring, so as to realize the synchronous grasping of the inner and outer springs. Moreover, it meets the high efficiency requirement of unloading 9 groups of inner and outer springs (the entire tooling tray) at a time, and realizes the synchronous grasping of multiple groups of inner and outer springs.

[0020] Secondly, the difficulty of the present invention lies in the use of targeted design to completely avoid the problem of falling, and to achieve the design goal of 100% no falling in a structural way. The present invention takes into account the particularity of the spring (that is, the contact surface of the spring is a spiral surface), and preferentially adopts a three-jaw clamp cylinder. The three-jaw clamp cylinder has better self-centering. When the three-jaw clamps the spring, it ensures that each clamp contacts the spiral surface of the spring at least at two points, ensuring that the contact state between the clamp and the spring remains stable, and fully utilizing the self-centering of the clamp cylinder to ensure accurate positioning and no tilting factors when the spring is grasped. Moreover, the present invention adopts a method of embedding a spherical structure in the clamp, so that the spring curved surface can be automatically guided and avoided after contacting the curved surface outside the surface of the clamp structure, while satisfying the limiting effect on the spring when the clamp is opened or clamped. When withdrawing, the spherical surface is relatively smooth; at the same time, the size of the spherical surface on the leaking clamp can be adjusted as needed to ensure that there will be no problems such as material carrying (the present invention adopts a round head screw (such as Figure 5 The structure shown in the figure, by adjusting the round head screw to adjust the height of the spherical protruding jaw surface, it plays a role in adjusting the degree of limit and give way, which is convenient for production and arbitrary adjustment).

[0021] Compared with the prior art, the advantages of the utility model are as follows:

[0022] (1) The utility model provides a synchronous grasping device for multiple sets of inner and outer springs, wherein a single grasping unit synchronously grasps the inner and outer springs, and multiple grasping units synchronously grasp multiple sets of inner and outer springs at the same time, thereby solving the problem of high manual labor intensity and the problem of low efficiency of existing manual handling methods and existing automated grasping tools.

[0023] (2) The multiple sets of inner and outer spring synchronous grasping devices of the present invention solve the problems of high probability of falling, unstable clamping and inaccurate placement of existing automated grasping tools, thus avoiding safety hazards.

[0024] (3) The multiple sets of synchronous grasping devices for inner and outer springs of the present invention promote the automation of maintenance operations and further enhance the unmanned and efficient maintenance operations.

[0025] (4) The multiple sets of inner and outer spring synchronous grasping device of the utility model has reasonable design and compact structure.

[0026] (5) The utility model has multiple sets of internal and external spring synchronous grasping devices, which have a simple structure and lower cost than other methods. The clamping and dropping effect can be adjusted according to the material conditions, meeting the controllable requirement of 100% no dropping. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of a synchronous grabbing device for multiple sets of inner and outer springs of the utility model;

[0028] Figure 2 It is a side view of a synchronous grabbing device for multiple sets of inner and outer springs of the utility model;

[0029] Figure 3 is a side view of the grabbing unit;

[0030] Figure 4 is a cross-sectional view of the grabbing unit;

[0031] Figure 5 is a schematic diagram of a round head screw;

[0032] Among them, 1-limit block, 2-adjusting bolt, 3-sliding pressure plate, 4-lifting ring, 5-mounting plate, 6-connecting seat, 7-grabbing unit, 8-external spring, 9-inner spring, 10-proximity switch, 11-fixing block, 12-adjustable connecting rod;

[0033] 71-first cylinder, 72-second cylinder, 75-first outer clamp, 76-connecting plate, 77-connecting port, 78-first straight-through connector, 79-second straight-through connector, 710-second inner clamp, 711-second outer clamp, 712-first round head screw, 713-second round head screw, 714-first inner clamp.

[0034] 7121-spherical surface, 7122-thread, 7123-open groove. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0036] Reference Figure 1 and Figure 2 As shown, the multiple sets of inner and outer spring synchronous grasping device of this embodiment includes a limit mechanism, a sliding mechanism, a lifting ring 4, a mounting plate 5, a grasping unit 7, a proximity switch 10, a fixing block 11 and an adjustable connecting rod 12;

[0037] The sliding mechanism includes a sliding plate 3 and a connecting seat 6. Two sliding plates 3 that are arranged opposite to each other and parallel to each other are fixed on the mounting plate 5. The connecting seat 6 is slidably connected between the two sliding plates 3. Specifically, the connecting seat 6 passes through the T-slot of the sliding plate 3. The connecting seat 6 can slide a certain distance in the T-slot of the sliding plate 3 for fine adjustment of the position in the sliding direction.

[0038] Among them, the limiting mechanism of the above-mentioned sliding mechanism is installed on both sides of the mounting plate 5 and located in the moving direction of the above-mentioned connecting seat 6. The limiting mechanism includes a limiting block 1 and an adjusting bolt 2. The limiting block 1 is fixed on the mounting plate 5. The adjusting bolt 2 is vertically arranged on the limiting block 1, and the connecting seat 6 is tightened and limited by the adjusting bolt 2.

[0039] It can be known that the above-mentioned sliding mechanism and limiting mechanism jointly perform sliding fine adjustment on the multiple groups of inner and outer spring synchronous grasping devices of this embodiment.

[0040] Among them, lifting rings 4 are also provided above the mounting plate 5 and at both ends of the mounting plate 5 for lifting, transporting and installing the entire multiple sets of inner and outer spring synchronous grasping device.

[0041] Among them, a fixing block 11 is arranged above the mounting plate 5, an adjustable connecting rod 12 is installed on the fixing block 11 and toward the bottom of the mounting plate 5, and a proximity switch 10 is arranged on the adjustable connecting rod 12. By adjusting the position of the adjustable connecting rod 12, the detection distance of the proximity switch 10 from the approaching object below is adjusted, which plays a role in preventing the multi-group inner and outer spring synchronous grasping device from misoperation or accidental collision with the object below in other situations. Figure 2 As shown, the lower portion of the adjustable connecting rod 12 is slightly shorter than the outer clamping jaw, and the upper portion of the adjustable connecting rod 12 is slightly higher than the fixed block 11 (just enough to leave an adjustable margin).

[0042] Among them, multiple groups of grabbing units 7 are vertically fixed below the mounting plate 5 for synchronously grabbing multiple groups of inner and outer springs. The mounting position of each group of grabbing units 7 corresponds to the placement position of the inner and outer springs on the tooling pallet to be transported.

[0043] Reference Figure 3 and Figure 4 As shown, the grabbing unit 7 includes a first cylinder 71, a second cylinder 72, a first outer jaw 75, a connecting plate 76, a connecting port 77, a first straight-through connector 78, a second straight-through connector 79, a second inner jaw 710, a second outer jaw 711, and a first inner jaw 714.

[0044] The connection port 77 is connected and fixed to the mounting plate 5 upward, and the first cylinder 71 is fixed to the connection port 77 downward.

[0045] The first cylinder 71 is provided with a first outer clamp 75 and two second outer clamps 711 downwardly, which are used to clamp the outer spring 8. The first cylinder 71 is provided with a first outer clamp 75 and two second outer clamps 711 evenly distributed downwardly. Specifically, the first outer clamp 75 and the two second outer clamps 711 are connected to the connection block below the first cylinder 71, and the three outer clamps can be installed in interchangeable positions.

[0046] The first cylinder 71 and the second cylinder 72 are connected by a mounting connection plate 76 .

[0047] The second cylinder 72 is provided with a first inner clamp 714 and two second inner clamps 710 downwardly, which are used to support and grasp the inner spring 9. Specifically, the second cylinder 72 is evenly provided with a first inner clamp 714 and two second inner clamps 710 downwardly, and the three inner clamps are located inside the three outer clamps. The first inner clamp 714 and the two second inner clamps 710 are connected to the connection block below the second cylinder 72, and the three inner clamps can be installed in interchangeable positions.

[0048] The first cylinder 71 is provided with a first straight connector 78 for connecting to an air source to provide power to the first cylinder 71 , and the second cylinder 72 is provided with a second straight connector 79 for connecting to an air source to provide power to the second cylinder 72 .

[0049] Preferably, the purpose of guiding and limiting can be achieved by setting the round head screw on any one of the three outer clamping jaws. Similarly, the purpose of guiding and limiting can be achieved by setting the round head screw on any one of the three inner clamping jaws.

[0050] In this embodiment, a second round head screw 713 is provided through the first outer clamping jaw 75 to prevent the outer spring 8 from falling or being smoothly disengaged. The second round head screw 713 is installed in the screw hole of the first outer clamping jaw 75, and the screw hole is located in the middle area of ​​the first outer clamping jaw 75 and in contact with the outer spring 8. In this embodiment, a first round head screw 712 is provided through the first inner clamping jaw 714 to prevent the inner spring 9 from falling or being smoothly disengaged. The first round head screw 712 is installed in the screw hole of the first inner clamping jaw 714, and the screw hole is located in the middle area of ​​the first inner clamping jaw 714 and in contact with the inner spring 9.

[0051] Since the first round head screw 712 and the second round head screw 713 have the same structure, Figure 5 As shown, therefore, the following description is given taking the first round head screw as an example.

[0052] The first round head screw 712 uses a spherical surface 7121 as the head, which facilitates smooth guidance when the spherical surface 7121 contacts the curved surface of the spring (inner spring 9 or outer spring 9), ensuring that each clamping jaw can contact the curved surface of the spring at least two contact points, ensuring that there will be no situation where the automatic centering cannot occur. The tail of the first round head screw 712 is provided with an open slot 7123, and the open slot 7123 is in the form of a straight slot. The tail is in the form of a straight slot, which is convenient for workers to use tools to adjust the height of the spherical surface 7121 protruding from the surface of the clamping jaw.

[0053] The above description is only a preferred embodiment of the present invention and does not constitute a limitation on the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A synchronous grasping device for multiple sets of inner and outer springs, characterized in that: The device includes an installation base plate, a sliding mechanism, a limiting mechanism, a lifting mechanism, a proximity switch mechanism and multiple groups of grabbing units; the sliding mechanism, the limiting mechanism and the lifting mechanism are located above the installation base plate, and the lifting mechanism is used for lifting and transporting the device; the sliding mechanism and the limiting mechanism cooperate to perform sliding fine-tuning on the position of the device; the proximity switch mechanism and the multiple groups of grabbing units are vertically installed below the installation base plate, and the position of each group of grabbing units matches the placement position of multiple groups of inner and outer springs on the pallet to be transferred, so as to synchronously grab multiple groups of inner and outer springs.

2. A synchronous grasping device for multiple sets of inner and outer springs as claimed in claim 1, characterized in that: The grabbing unit comprises a first cylinder, a second cylinder, an outer clamp, a connecting plate, a connecting port, a first straight joint, a second straight joint and an inner clamp; the connecting port is connected and fixed to the mounting base upward; the first cylinder is fixed downward to the connecting port, and the first cylinder is connected to the first straight joint; the outer clamp is installed downward to the first cylinder for clamping the outer spring; the second cylinder is connected to the second straight joint through the connecting plate below the first cylinder, and the second cylinder is connected to the second straight joint, and the inner clamp is installed downward to the second cylinder for supporting and grabbing the inner spring; The inner clamping jaw is located inside the outer clamping jaw.

3. A synchronous grasping device for multiple sets of inner and outer springs as claimed in claim 2, characterized in that: The three outer clamps are evenly distributed under the first cylinder; the three inner clamps are evenly distributed under the second cylinder.

4. A synchronous grasping device for multiple sets of inner and outer springs as claimed in claim 3, characterized in that: Any one of the three outer clamping jaws and any one of the three inner clamping jaws are penetrated by a round head screw to prevent the outer spring or the inner spring from falling off or being smoothly disengaged.

5. A synchronous grasping device for multiple sets of inner and outer springs as claimed in claim 4, characterized in that: The head of the round head screw is set as a spherical surface, and the spherical surface contacts the curved surface of the outer spring or the inner spring, which facilitates the smooth guidance of the spherical surface and the curved surface of the inner spring or the outer spring and the limiting of the inner spring or the outer spring.

6. A synchronous grasping device for multiple sets of inner and outer springs as claimed in claim 4, characterized in that: The body of the round head screw is provided with threads; the tail of the round head screw is provided with an open groove; the round head screw is located on the outer clamping jaw or the inner clamping jaw and is in the middle area in contact with the outer spring or the inner spring.

7. A synchronous grasping device for multiple sets of inner and outer springs according to any one of claims 1 to 6, characterized in that: The sliding mechanism includes a sliding pressure plate and a connecting seat. Two sliding pressure plates parallel to each other are fixed above the mounting base plate, and the connecting seat can be slidably inserted between the two sliding pressure plates. The limiting mechanism of the sliding mechanism is installed on both sides of the mounting base plate and located in the moving direction of the connecting seat.

8. A synchronous grasping device for multiple sets of inner and outer springs as claimed in claim 7, characterized in that: The limiting mechanism comprises a limiting block and an adjusting bolt. The limiting block is fixed on the mounting base plate. The limiting block is vertically provided with an adjusting bolt, and the connecting seat is tightened and limited by the adjusting bolt.

9. A synchronous grasping device for multiple sets of inner and outer springs according to any one of claims 1 to 6, characterized in that: The proximity switch mechanism: a fixed block is arranged on the installation base plate, an adjustable connecting rod is arranged on the fixed block and in the downward direction of the installation base plate, and a proximity switch is arranged on the adjustable connecting rod.

10. A synchronous grasping device for multiple sets of inner and outer springs according to any one of claims 1 to 6, characterized in that: The hanging mechanism is configured as a hanging ring, and the hanging ring is arranged above both ends of the mounting base plate.

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