Stopper

Abstract

The stopper comprises a frame body, an air cylinder and a stopping plate, the stopping plate is rotatably arranged at the front end of the frame body through a first hinge shaft, the air cylinder is rotatably connected to the rear end of the frame body, and the air cylinder is provided with a piston rod; the piston rod is rotationally connected with one end of the first connecting rod and one end of the second connecting rod through a third hinge shaft, the other end of the first connecting rod is rotationally connected to the frame body through a fourth hinge shaft, and the other end of the second connecting rod is rotationally connected to the stop plate through a second hinge shaft. A limiting flat plate is further fixedly arranged on the front portion of the frame body, when the piston rod is in an extension state, the second hinge shaft, the third hinge shaft and the fourth hinge shaft are located on the same straight line, the first connecting rod and the second connecting rod abut against the lower side face of the limiting flat plate respectively, and a body of the stop plate extends out of the frame body. When the piston rod is in a contraction state, the first connecting rod and the second connecting rod leave the limiting flat plate, and the stop plate body is contracted in the frame body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of accumulation and drop chain conveying, and particularly to a stopper for an accumulation and drop chain conveying system. BACKGROUND

[0002] The accumulation and drop chain conveying system is a kind of efficient and flexible material conveying equipment, which is widely used in industrial production, especially in the industries of spraying, automobile manufacturing, household appliances, etc. The system realizes the quantitative conveying of materials through chain as traction component, and has the accumulation and drop function, i.e. the carrying trolley is blocked by the stopper at the required position, so that the carrying trolley is disconnected from the driving chain, thereby realizing the stop of conveying and the temporary storage or process operation of materials. The existing stopper structure is complex, and is easy to be unlocked and fail under the impact of the heavy load of the carrying trolley. SUMMARY

[0003] The present application provides a stopper, which can realize stable self-locking when the stop plate is in the elongated state, and avoid accidental unlocking failure.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] The present application provides a stopper, which comprises a frame body installed on the side of the track of the accumulation and drop chain conveying system, a gas cylinder installed on the frame body, and a stop plate in transmission connection with the gas cylinder. The stop plate is rotatably arranged at the front end of the frame body through a first hinge shaft. The gas cylinder is rotatably connected to the rear end of the frame body. The gas cylinder has a piston rod. The piston rod is rotatably connected to one end of a first connecting rod and one end of a second connecting rod through a third hinge shaft. The other end of the first connecting rod is rotatably connected to the frame body through a fourth hinge shaft. The other end of the second connecting rod is rotatably connected to the stop plate through a second hinge shaft. A limiting flat plate is fixedly arranged at the front part of the frame body. When the piston rod is in the elongated state, the second hinge shaft, the third hinge shaft and the fourth hinge shaft are on a straight line, and the first connecting rod and the second connecting rod are respectively abutted against the lower side of the limiting flat plate. The main body of the stop plate extends out of the frame body. When the piston rod is in the contracted state, the first connecting rod and the second connecting rod are away from the limiting flat plate, and the main body of the stop plate is contracted in the frame body.

[0006] In a possible implementation manner, the gas cylinder is rotatably connected to the frame body through a double-ear ring support.

[0007] In a possible implementation manner, the frame body comprises a pair of side plates, and the first hinge shaft and the fourth hinge shaft respectively penetrate the pair of side plates.

[0008] The application has the advantages of simple structure, stability and reliability, when the stopper is in the elongated state, the carrier trolley can be prevented from knocking open the stop plate through the self-locking of the connecting rod, so that the stop plate can effectively stop the carrier trolley. When the carrier trolley needs to be released, only a small force needs to be applied to the connecting rod assembly to make the connecting rod structure away from the dead point position, so that the self-locking is released, thus the application can reduce the size requirement of the cylinder diameter. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 A schematic view of a stopper in a contracted state is provided for the embodiment of the application.

[0010] Figure 2 A schematic view of a stopper in an elongated state is provided for the embodiment of the application.

[0011] Figure 3 A side view of a stopper is provided for the embodiment of the application.

[0012] Figure 4 A schematic view of the position relationship between the stopper, the driving track and the carrier trolley of the application.

[0013] Wherein: 10, bearing track; 11, driving track; 12, driving chain; 120, push head; 13, carrier trolley; 131, lifting claw; 132, escape claw; 20, stopper; 21, frame body; 22, air cylinder; 221, piston rod; 23, first connecting rod; 24, second connecting rod; 25, stop plate; 26, limiting flat plate; A, first hinge shaft; B, second hinge shaft; C, third hinge shaft; D, fourth hinge shaft; 27, double-ear ring support. DETAILED DESCRIPTION

[0014] To describe the technical content, structural features, purposes and effects of the utility model in detail, the technical solutions in the embodiments of the application will be described below in combination with the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of various exemplary embodiments or implementations of the utility model. However, various exemplary embodiments can also be implemented without these specific details or in one or more equivalent arrangements. In addition, various exemplary embodiments can be different, but not necessarily exclusive. For example, the specific shape, structure and characteristics of the exemplary embodiments can be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0015] Hereinafter, the terms "first", "second", and the like are used only for the purpose of description and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more. In addition, the accompanying drawings Figure 1 in the upward direction corresponds to the "front" direction described in the specification, the Figure 1 in the downward direction corresponds to the "rear" direction described in the specification, and the running direction of the carrier vehicle is shown in Figure 4

[0016] Referring to Figure 1 , the present application provides a stopper 20, which includes a frame body 21, a cylinder 22 mounted on the frame body 21, a linkage assembly, and a stop plate 25 connected to the cylinder 22 through the linkage assembly. Referring to Figure 4 , wherein the frame body 21 is fixedly mounted on the side of the accumulation chain conveying system and located between the carrying rail 10 and the driving rail 11. The cylinder 22 is rotatably mounted on the rear side of the frame body 21 through a double-ear ring support 27.

[0017] The frame body 21 includes a pair of side plates 211, and the stop plate 25 is rotatably connected to the front end of the pair of side plates 211 through a first hinge shaft A. Since the first hinge shaft A is fixed relative to the frame body 21, when the stop plate 25 receives an external force, the stop plate 25 will rotate around the first hinge shaft A to achieve extension and intercept the travel path of the carrier vehicle, lift the lifting claws 131 of the carrier vehicle 13, or retract into the frame body 21 to release the carrier vehicle.

[0018] The cylinder 22 is rotatably connected to the rear end of the frame body 21 through the double-ear ring support 27, and the cylinder 22 has a piston rod 221. Referring to Figures 1-3 , the linkage assembly includes a pair of first linkages 23 and a pair of second linkages 24. One end of the pair of first linkages 23 is rotatably connected to the upper end of the piston rod 211 through a third hinge shaft C, and the other end of the pair of first linkages 23 is rotatably connected to the frame body 21 through a fourth hinge shaft D. One end of the pair of second linkages 24 is rotatably connected to the stop plate 25 through a second hinge shaft B, and the other end of the pair of second linkages 24 is rotatably connected to the upper end of the piston rod 211 through the third hinge shaft C. The first linkages 23, the second linkages 24, and the stop plate 25 constitute a linkage assembly with the piston rod 221. The piston rod is a power component, and the first linkages 23, the second linkages 24, and the stop plate 25 are follow-up components. The first hinge shaft A and the fourth hinge shaft D are fixed relative to the frame body 21, and the second hinge shaft B and the third hinge shaft C are movable relative to the frame body 21.

[0019] ​The front side of the frame body 21 is also fixedly provided with a limiting plate 26, which is arranged obliquely relative to the conveying direction, and can limit the position of the piston rod 211.

[0020] Figure 2 As shown in the right side position of Fig. 6, the piston rod 211 is in the extended state, the second hinge shaft B, the third hinge shaft C and the fourth hinge shaft D are in a straight line, the piston rod 211 abuts against the lower side of the limiting plate 26, the connecting rod assembly is in the dead point position, the first connecting rod 23 and the second connecting rod 24 abut against the lower side of the limiting plate 26 respectively, and the stop plate 25 is mostly extended out of the frame body 21. Figure 4 The stop plate 25 lifts the lifting claws 131 of the conveying trolley, so that the conveying trolley 13 is separated from the push head 120 of the driving chain 12, thereby achieving the stopping of the conveying trolley.

[0021] Figure 1 As shown in the right side position of Fig. 6, the piston rod 211 is in the extended state, the second hinge shaft B, the third hinge shaft C and the fourth hinge shaft D are in a straight line, the piston rod 211 abuts against the lower side of the limiting plate 26, the connecting rod assembly is in the dead point position, the first connecting rod 23 and the second connecting rod 24 abut against the lower side of the limiting plate 26 respectively, and the stop plate 25 is mostly extended out of the frame body 21. Figure 4 The stop plate 25 lifts the lifting claws 131 of the conveying trolley, so that the conveying trolley 13 is separated from the push head 120 of the driving chain 12, thereby achieving the stopping of the conveying trolley.

[0022] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and the scope of protection of the present application is defined by the appended claims, the specification and their equivalents.

Claims

1. A stopper comprising a frame body (21) installed on the side of a rail of a power-and-free conveyor system, a cylinder (22) installed on the frame body (21), and a stop plate (25) in driving connection with the cylinder (22), characterized in that: The stop plate (25) is rotatably arranged at the front end of the frame body (21) through a first hinge shaft (A), the cylinder (22) is rotatably connected at the rear end of the frame body (21), the cylinder (22) has a piston rod (221), the piston rod (221) is rotatably connected with one end of the first connecting rod (23) and one end of the second connecting rod (24) through a third hinge shaft (C) respectively, the other end of the first connecting rod (23) is rotatably connected on the frame body (21) through a fourth hinge shaft (D), the other end of the second connecting rod (24) is rotatably connected on the stop plate (25) through a second hinge shaft (B), the front part of the frame body (21) is further fixedly provided with a limiting flat plate (26), when the piston rod (221) is in the elongated state, the second hinge shaft (B), the third hinge shaft (C) and the fourth hinge shaft (D) are in a straight line, and the first connecting rod (23) and the second connecting rod (24) are respectively abutted on the lower side of the limiting flat plate (26), the main body of the stop plate (25) is stretched out of the frame body (21); When the piston rod (221) is in the contracted state, the first connecting rod (23) and the second connecting rod (24) are away from the limiting flat plate (26), and the main body of the stop plate (25) is contracted in the frame body (21).

2. The stopper of claim 1, wherein The cylinder (22) is rotatably connected on the frame body (21) through a double-ear ring support (27).

3. The stop of claim 1, wherein The frame body (21) comprises a pair of side plates (211), and the first hinge shaft (A) and the fourth hinge shaft (D) pass through the pair of side plates (211) respectively.

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