Chain bucket type car unloader with safety protection function

Abstract

The utility model discloses a chain bucket type unloading machine with a safety protection function, and belongs to the technical field of chain bucket type unloading machines. The chain bucket type unloading machine solves the problems that an existing chain bucket type unloading machine is large in rope loss, and the maintenance cost of the chain bucket type unloading machine is increased. A protection mechanism is arranged on a portal frame and connected with a winch lifting mechanism, tooth groove plates of the protection mechanism are connected with the portal frame, tooth grooves are machined in the tooth groove plates, an installation block is arranged between the two tooth groove plates and connected with the tooth groove plates, and two first connecting rods are hinged to the lower end of a pull rod arranged on the installation block in a sliding mode. The first connecting rods are right-angle connecting rods and hinged to the hinge seats, each first connecting rod is hinged to a second connecting rod, the second connecting rods are connected with the tooth grooves, and a reed is connected to the mounting block and connected with the pull rod. According to the chain bucket type unloading machine, the second connecting rod of the protection mechanism is connected with the tooth groove of the tooth groove plate in a matched mode, the gravity of the rope bearing chain bucket can be shared, and the protection effect can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chain bucket type car unloaders, in particular to a chain bucket type car unloader with safety protection. Background Art

[0002] Chain bucket unloaders are primarily used for unloading and transporting materials, particularly in the mining and construction industries. They are designed for efficiency, durability, and low maintenance. The winch mechanism is a core component of the chain bucket unloader. This mechanism is responsible for lifting the material in the bucket from the bottom of the vehicle to the designated discharge height. The winch drives the bucket upwards and downwards, ultimately lifting the loaded material to the target location.

[0003] When the winch lifting mechanism is used in conjunction with the chain bucket, the rope of the winch bears most of the gravity of the chain bucket, so the winch and its rope need to be regularly maintained and inspected. However, since the rope bears the weight for a long time, the rope wears out greatly, the rope replacement cycle is shortened, and the maintenance cost of the chain bucket unloader is increased.

[0004] Therefore, the present application proposes a chain bucket type unloader with safety protection to solve the above problems. Utility Model Content

[0005] This utility model is developed to address the problem that the rope of the winch hoist mechanism of existing chain bucket unloaders bears the majority of the weight of the chain bucket, resulting in significant rope wear and tear, and increased maintenance costs for the chain bucket unloaders. The following is a brief overview of the utility model to provide a basic understanding of certain aspects of the utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to identify key or important aspects of the utility model, nor is it intended to limit the scope of the utility model.

[0006] The technical solution of this utility model:

[0007] A chain bucket type car unloader with safety protection comprises a gantry, a chain bucket, a winch lifting mechanism and a protection mechanism. The winch lifting mechanism is installed on the gantry, the chain bucket is connected to the gantry through the winch lifting mechanism, and the protection mechanism is provided on the gantry, which is connected to the winch lifting mechanism.

[0008] The protective mechanism includes a toothed plate, a pull rod, a first connecting rod, a second connecting rod, a mounting block and a spring. The two toothed plates are arranged in a mirror image on the door frame. The upper end of the toothed plate is connected to the bottom of the door frame. The toothed plate is processed with teeth. The mounting block is arranged between the two toothed plates. The mounting block is slidably connected to the toothed plate. A pull rod is slidably provided on the mounting block. The lower end of the pull rod is hinged with two first connecting rods. The first connecting rod is a right-angle connecting rod. The right angle of the first connecting rod is hinged to the hinge seat on the mounting block. The end of each first connecting rod is hinged with a second connecting rod. The second connecting rod passes through the mounting block and is connected to the toothed plate. The bottom of the mounting block is connected with a spring, and the spring is connected to the pull rod.

[0009] Furthermore, the winch lifting mechanism includes a winch, a steel cable, a movable pulley and a fixed pulley. The winch is installed on the portal frame. The winch is provided with a steel cable. Two movable pulleys are symmetrically installed on the chain bucket. The steel cable is cooperatively connected to the movable pulley. The tail end of the steel cable is cooperatively connected to the fixed pulley. The fixed pulley is installed on the portal frame.

[0010] Furthermore, the movable pulley is fixedly connected to the mounting block, a sliding block is provided on the side wall of the mounting block, a sliding groove is processed on the tooth plate, and the sliding block is slidably connected to the sliding groove.

[0011] Furthermore, an upper limit plate and a lower limit plate are provided on the pull rod, the upper limit plate is arranged above the mounting block, and the lower limit plate is arranged below the spring.

[0012] Furthermore, the upper end of the pull rod is connected to a lifting member.

[0013] The utility model has the following beneficial effects:

[0014] The utility model is a chain bucket type car unloader with safety protection. On the basis of the existing chain bucket type car unloader, a protection mechanism is installed on the door frame. The second connecting rod of the protection mechanism is connected with the tooth groove of the tooth plate through the cooperation, which can not only share the gravity of the chain bucket carried by the rope, but also play a protective effect. If the rope is damaged or broken, it has a certain protection and buffering effect, and also reduces the maintenance cost of the chain bucket type car unloader and increases the length of the maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a chain bucket unloader with safety protection;

[0016] Figure 2 It is a schematic diagram of the fixed state of the mounting block and the tooth plate;

[0017] Figure 3 It is a schematic diagram of the sliding state of the mounting block and the toothed plate;

[0018] Figure 4 It is a schematic diagram of the protection mechanism;

[0019] Figure 5 This is a schematic diagram of the tooth plate.

[0020] In the figure: 1-gantry, 2-chain bucket, 3-winch lifting mechanism, 4-protection mechanism, 31-winch, 32-steel cable, 33-movable pulley, 34-fixed pulley, 41-toothed plate, 42-pull rod, 43-first connecting rod, 44-second connecting rod, 45-articulated seat, 46-mounting block, 47-lifting member, 48-spring, 410-toothed groove, 411-slide groove, 421-upper limit plate, 422-lower limit plate, 461-slider. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0022] The connections mentioned in this utility model are divided into fixed connections and detachable connections. The fixed connections (i.e., non-detachable connections) include but are not limited to conventional fixed connection methods such as hemming, rivet connection, bonding connection, and welding connection. The detachable connections include but are not limited to conventional detachable methods such as threaded connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly specified, it is assumed that at least one connection method can always be found among the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example, a welded connection is selected for a fixed connection, and a hinge connection is selected for a detachable connection.

[0023] Example 1, combined Figure 1-Figure 5 This embodiment describes a chain bucket type car unloader with safety protection, comprising a gantry 1, a chain bucket 2, a winch lifting mechanism 3, and a protection mechanism 4. The winch lifting mechanism 3 is installed on the gantry 1, and the chain bucket 2 is connected to the gantry 1 through the winch lifting mechanism 3. The gantry 1 is provided with a protection mechanism 4, and the protection mechanism 4 is connected to the winch lifting mechanism 3.

[0024] The protective mechanism 4 includes a toothed plate 41, a pull rod 42, a first connecting rod 43, a second connecting rod 44, a mounting block 46 and a spring 48. The two toothed plates 41 are arranged in a mirror image on the door frame 1. The upper end of the toothed plate 41 is connected to the bottom of the door frame 1. The toothed plate 41 is processed with a tooth groove 410. The mounting block 46 is arranged between the two toothed plates 41. The mounting block 46 is slidably connected to the toothed plate 41. A pull rod 42 is slidably provided on the mounting block 46. The lower end of the pull rod 42 is hinged with two first connecting rods 43. The first connecting rod 43 is a right-angle connecting rod. The right angle of the first connecting rod 43 is hinged to the hinge seat 45 on the mounting block 46. The end of each first connecting rod 43 is hinged with a second connecting rod 44. The second connecting rod 44 passes through the mounting block 46 and is connected to the tooth groove 410 of the toothed plate 41. The bottom of the mounting block 46 is connected with a spring 48, and the spring 48 is connected to the pull rod 42.

[0025] During the production process, when the car that needs to be unloaded is placed under the chain bucket 2, the control rod 42 moves upward. The pull rod 42 is connected to a pulling member 47, and the pulling member 47 is a pulling rope. The staff standing on the door frame 1 pulls the pulling member 47 to drive the pull rod 42 to move upward. When the pull rod 42 moves upward, the lower limit plate 422 on the pull rod 42 contacts the spring 48 and presses the spring 48 upward, and one end of the two first connecting rods 43 hinged to the tail end of the pull rod 42 moves upward. The rod 43 is a right-angle connecting rod, one end of the long side of which is hinged to the pull rod 42, and the other end of the long side is hinged to the hinge seat 45 on the mounting block 46. When the hinge between the first connecting rod 43 and the pull rod 42 moves upward, the short sides of the two symmetrically arranged first connecting rods 43 move inward at the same time, and the second connecting rod 44 hinged to the first connecting rod 43 also moves inward, and the pointed tooth end of the second connecting rod 44 retracts from the tooth groove 410 of the tooth groove plate 41; then the winch 31 of the winch lifting mechanism 3 is started, The winch 31 retracts or releases the steel cable 32, and drives the chain bucket 2 to rise or fall under the action of the movable pulley 33 and the fixed pulley 34. The outer walls of the movable pulleys 33 on the chain bucket 2 are connected to the mounting block 6. Therefore, when the movable pulley 33 moves up and down, it also drives the mounting block 46 to move up and down; when the chain bucket 2 contacts the material in the car, the height of the chain bucket 2 is determined, the staff releases the lifting member 47, the spring 48 resets and pushes the lower limit plate 422 to move downward, thereby driving the pull rod 42 to reset, the first connecting rod 43 drives the second connecting rod 44, so that the pointed tooth end of the second connecting rod 44 passes through the mounting block 46 and is inserted into the tooth groove 410, completing the fixation of the mounting block 46. A slider 461 is also provided on the side wall of the mounting block 46, and the slider 461 is slidably set in the slide groove 411 of the tooth groove plate 41 to ensure that the mounting block 46 will not produce displacement in other directions during the up and down movement, and ensure that the end of the second connecting rod 44 is stably connected to the tooth groove 410.

[0026] The pointed end of the second connecting rod 44 is connected with the tooth groove 410 of the tooth groove plate 41, which reduces the gravity of the chain bucket 2 carried by the steel cable 32 and reduces the loss of the steel cable 32. In addition, if the steel cable 32 breaks in an emergency, the connection between the second connecting rod 44 and the tooth groove plate 41 can also provide certain protection and buffering effects.

[0027] This embodiment is only an illustrative description of the present application and does not limit its scope of protection. Those skilled in the art may also make partial changes to it. As long as they do not exceed the spirit of the present application, they are all within the scope of protection of the present application.

Claims

1. A chain bucket type unloader with safety protection, characterized by: The invention comprises a door frame (1), a chain bucket (2), a winch lifting mechanism (3) and a protective mechanism (4); the winch lifting mechanism (3) is installed on the door frame (1); the chain bucket (2) is connected to the door frame (1) through the winch lifting mechanism (3); the door frame (1) is provided with a protective mechanism (4); and the protective mechanism (4) is connected to the winch lifting mechanism (3); The protection mechanism (4) comprises a toothed plate (41), a pull rod (42), a first connecting rod (43), a second connecting rod (44), a mounting block (46) and a spring (48), wherein the two toothed plates (41) are arranged on the door frame (1) in a mirror-image manner, the upper end of the toothed plate (41) is connected to the bottom of the door frame (1), the toothed plate (41) is processed with a toothed groove (410), the mounting block (46) is arranged between the two toothed plates (41), the mounting block (46) is slidably connected to the toothed plate (41), and a sliding arrangement is provided on the mounting block (46). There is a pull rod (42), the lower end of the pull rod (42) is hinged with two first connecting rods (43), the first connecting rod (43) is a right-angle connecting rod, the right angle of the first connecting rod (43) is hinged with a hinge seat (45) on the mounting block (46), the end of each first connecting rod (43) is hinged with a second connecting rod (44), the second connecting rod (44) passes through the mounting block (46) and is connected to the tooth groove (410) of the tooth groove plate (41), the bottom of the mounting block (46) is connected with a spring (48), and the spring (48) is connected to the pull rod (42).

2. The chain bucket type unloader with safety protection according to claim 1, characterized in that: The hoisting mechanism (3) comprises a hoist (31), a steel cable (32), a movable pulley (33) and a fixed pulley (34); the hoist (31) is mounted on the door frame (1); the hoist (31) is provided with a steel cable (32); two movable pulleys (33) are symmetrically mounted on the chain bucket (2); the steel cable (32) is cooperatively connected to the movable pulley (33); the tail end of the steel cable (32) is cooperatively connected to the fixed pulley (34); and the fixed pulley (34) is mounted on the door frame (1).

3. The chain bucket type unloader with safety protection according to claim 2, characterized in that: The movable pulley (33) is fixedly connected to the mounting block (46); a slider (461) is provided on the side wall of the mounting block (46); a slide groove (411) is processed on the tooth plate (41); and the slider (461) is slidably connected to the slide groove (411).

4. The chain bucket type unloader with safety protection according to claim 3, characterized in that: An upper limit plate (421) and a lower limit plate (422) are provided on the pull rod (42), the upper limit plate (421) is arranged above the mounting block (46), and the lower limit plate (422) is arranged below the spring (48).

5. The chain bucket type unloader with safety protection according to claim 4, characterized in that: The upper end of the pull rod (42) is connected to a lifting member (47).

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