Device for preventing crankshaft from falling

Abstract

The utility model relates to the technical field of crankshaft processing, and provides a device for preventing a crankshaft from falling in order to solve the problem of product falling caused by insufficient air pressure in the process of carrying the crankshaft, which comprises a clamping component and a limiting piece for limiting the opening and closing of the clamping component, the clamping assembly is further connected with a first driving air cylinder used for driving the clamping assembly to ascend and descend. Product falling caused by insufficient air pressure in the crankshaft carrying process can be prevented. External force applied by a tension spring is omitted, and the air cylinder can be made smaller; and in the crankshaft carrying process, even if the air pressure drops sharply, the phenomenon that the crankshaft drops cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft processing, in particular to a device for preventing a crankshaft from falling. Background Art

[0002] During the crankshaft processing, such as when transporting the crankshaft, in order to prevent the crankshaft from falling, the prior art generally uses a tension spring to apply tension to prevent the crankshaft from falling; or uses a stop valve to prevent the robot arm from opening when the air pressure is insufficient and causing the crankshaft to fall; however, applying external force by a tension spring will cause the robot arm claw to open, which requires a higher air pressure, and requires a cylinder with a larger cylinder diameter, which will cause the moving parts to wear faster and affect the product life; and using a stop valve to prevent insufficient air pressure cannot prevent the crankshaft from falling due to cylinder rupture. Utility Model Content

[0003] The purpose of the utility model is to provide a device to prevent the crankshaft from falling, which can prevent the crankshaft from falling due to insufficient air pressure during the transportation of the crankshaft, save the external force applied by the tension spring, and the cylinder can be made smaller; and even if the air pressure drops sharply during the transportation of the crankshaft, the crankshaft will not fall.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A device for preventing a crankshaft from falling comprises a clamping assembly and a limiting member for limiting the opening and closing of the clamping assembly; the clamping assembly is also connected to a first driving cylinder for driving the clamping assembly to rise and fall.

[0006] Furthermore, the clamping assembly comprises at least a pair of symmetrically arranged claws.

[0007] Furthermore, the clamping assembly includes a pair of symmetrically arranged fixing plates, and at least one clamping claw is arranged on one of the fixing plates.

[0008] Furthermore, the clamping claw is movably arranged on the fixing plate and can move laterally along the fixing plate.

[0009] Furthermore, the pair of fixing plates are also movably connected to a supporting plate, and the supporting plate is connected to the first driving cylinder.

[0010] Furthermore, the limiting member includes a second driving cylinder and a locking plate arranged at the output end of the second driving cylinder, and the locking plate has a pair of locking grooves; a limiting rod is arranged on one side of the claw, and the limiting rod can be locked in one of the locking grooves.

[0011] Furthermore, the inner side surfaces opposite to the claws are arc-shaped.

[0012] Furthermore, the first driving cylinder and the second driving cylinder are connected via an external central control system signal.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0014] The utility model has a reasonable design and a simple structure. It can prevent the crankshaft from falling due to insufficient air pressure during the transportation of the crankshaft. The external force applied by the tension spring is omitted, and the cylinder can be made smaller. Even if the air pressure drops sharply during the transportation of the crankshaft, the crankshaft will not fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a device for preventing a crankshaft from falling provided by an embodiment of the utility model in a closed state;

[0017] Figure 2 A schematic diagram of the structure of the device for preventing a crankshaft from falling provided by an embodiment of the utility model in an open state;

[0018] Figure 3 It is a side view of the device for preventing the crankshaft from falling provided by an embodiment of the utility model.

[0019] Icon: 1-first driving cylinder, 2-second driving cylinder, 3-support plate, 4-locking plate, 5-limiting rod, 6-locking groove, 7-claw, 8-fixing plate, 81-slot, 9-crankshaft. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Example 1

[0022] A device for preventing a crankshaft from falling comprises a clamping assembly and a limiting member for limiting the opening and closing of the clamping assembly; the clamping assembly is also connected to a first driving cylinder 1 for driving the clamping assembly to rise and fall.

[0023] In this embodiment, the clamping assembly includes at least a pair of symmetrically arranged claws 7. More specifically, the clamping assembly includes a pair of symmetrically arranged fixed plates 8. At least one claw 7 is arranged on one of the fixed plates 8. Preferably, two claws 7 are arranged on one of the fixed plates 8, that is, a total of four claws, i.e., two pairs of claws 7, are arranged on the two symmetrical fixed plates 8, so that the crankshaft 9 can be clamped more stably.

[0024] In order to enable the claw 7 to be adaptively adjusted according to the specifications of the crankshaft 9 for more stable clamping, in the present embodiment, the claw 7 is movably arranged on the fixed plate 8 and can move laterally along the fixed plate 8; for example, a long slot 81 or a plurality of short slots 81 at intervals can be opened laterally on the support plate 3, and then the claw 7 is fixed to the fixed plate 8 by passing a fixing component such as a fixing bolt through the slot 81. When the position of the claw 7 needs to be adjusted, the fixing component can be adjusted to fix the claw 7.

[0025] In this embodiment, a pair of the fixing plates 8 are also movably connected to the support plate 3, such as being rotatably connected between a U-shaped support plate 3; the support plate 3 is connected to the first driving cylinder 1, so that the clamping assembly can be adjusted more conveniently.

[0026] In this embodiment, the limiting member includes a second driving cylinder 2 and a locking plate 4 arranged at the output end of the second driving cylinder 2, and the locking plate 4 has a pair of locking grooves 6; a limiting rod 5 is arranged on one side of the claw 7, and the limiting rod 5 can be locked in one of the locking grooves 6.

[0027] In this embodiment, the inner side surfaces of the clamping claws 7 are arc-shaped, so that they fit more closely with the outer side of the crankshaft 9, thereby making the clamping more stable. Preferably, an anti-slip pad is also provided on the inner side surface.

[0028] In this embodiment, the first driving cylinder 1 and the second driving cylinder 2 are connected via an external central control system signal, so that the working process is more automated and the working efficiency is improved.

[0029] Working principle: When the utility model is in use, the pneumatic device is connected to the claw 7, which controls the opening and closing of the claw 7 and is connected to the external central control system signal; when the claw 7 grabs the crankshaft 9 product, the claw 7 is in a closed state, at this time, the locking plate 4 moves downward under the push of the cylinder, and the locking groove 6 on the locking plate 4 clamps the limit rod 5, so that the claw 7 cannot be opened and the crankshaft 9 will not fall; then the first driving cylinder 1 is started to lift the clamping assembly as a whole, and the crankshaft 9 is moved to the specified position. Due to the external central control system, when the crankshaft 9 is in place signal is connected (such as infrared sensing), the locking plate 4 moves upward under the drive of the second driving cylinder 2, the locking function does not work, and the claw 7 can be freely opened under the push of qigong; then the first driving cylinder 1 drops the clamping assembly as a whole, and the crankshaft 9 can be clamped again. Therefore, the utility model can prevent the crankshaft 9 from falling due to insufficient air pressure during the transportation process by pushing the positioning plate 4 through the small cylinder. The external force applied by the tension spring is omitted, the cylinder can be made smaller, and the crankshaft 9 will not fall even if the air pressure drops sharply during the transportation of the crankshaft 9.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for preventing a crankshaft from falling, characterized in that: It includes a clamping assembly and a limiting member for limiting the opening and closing of the clamping assembly; the clamping assembly is also connected to a first driving cylinder for driving the clamping assembly to rise and fall; The clamping assembly comprises at least a pair of symmetrically arranged claws; The limiting member includes a second driving cylinder and a locking plate arranged at the output end of the second driving cylinder, wherein the locking plate has a pair of locking grooves; a limiting rod is arranged on one side of one of the claws, and the limiting rod can be locked in one of the locking grooves.

2. The device for preventing a crankshaft from falling according to claim 1, characterized in that: The clamping assembly comprises a pair of symmetrically arranged fixing plates, one of the fixing plates being provided with at least one claw.

3. The device for preventing a crankshaft from falling according to claim 2, characterized in that: The clamping claw is movably arranged on the fixing plate and can move laterally along the fixing plate.

4. The device for preventing a crankshaft from falling according to claim 2, characterized in that: The pair of fixing plates are also movably connected to a supporting plate, and the supporting plate is connected to the first driving cylinder.

5. The device for preventing a crankshaft from falling according to claim 1, characterized in that: The first driving cylinder and the second driving cylinder are connected via an external central control system signal.

6. The device for preventing a crankshaft from falling according to claim 1, characterized in that: The inner side surfaces opposite to the claws are arc-shaped.

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