Variable force wheel capable of being positionally protected and activated coal feeder

Abstract

The application discloses a variable force wheel and an activated coal feeder with position-limiting protection, which comprises a force wheel spring, a piston and a position limiter, the piston is connected to the lower end of the force wheel spring, and the position limiter is connected to the lower end of the piston; the center of the position limiter and the center of the piston coincide in the vertical direction, when the activated coal feeder is in the maximum output state and appears empty load, the lower end of the position limiter abuts against the bottom of the cylinder, so as to avoid that the force wheel spring is in the extreme stretching state. The application connects the position limiter to the lower end center of the piston, when the activated coal feeder is in the maximum output state and appears empty load, the bearing capacity of the activated coal feeder is reduced, the elongation of the force wheel spring is increased, when the elongation of the force wheel spring increases to a certain value, the lower end of the position limiter abuts against the bottom of the cylinder, the force wheel spring is prevented from continuing to stretch downward to generate extreme stretching, metal fatigue and breakage.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machinery, in particular to a variable force wheel with position limiting protection and an activated coal feeder. BACKGROUND

[0002] The dumper is a large mechanical equipment used for unloading the bulk material in the railway open wagon, and is widely used for unloading the bulk material loaded by the train. The dumper can overturn or tilt the vehicle to unload the material loaded in the vehicle. The dumper has high loading and unloading efficiency, causes little damage to the vehicle, and is convenient for realizing the automatic control of the machine, and is suitable for the industrial departments such as the port with large transportation capacity. In the unloading process of the dumper, the open wagon loaded with the material enters the dumper room, and then the dumper drives the open wagon to tilt and overturn so that the material falls down. The unloaded material first passes through the hopper located below the dumper, and then falls down to the conveying belt under the action of the activated feeder, and then the material is conveyed to the next transfer point by the conveying belt.

[0003] The activated coal feeder combines the functions of feeding and activating the material into one, and is suitable for various materials with different viscosities, and effectively eliminates the problems of swelling and blocking of the bin. When the dumper unloads the coal, the activated coal feeder is opened wide during the unloading process of the dumper. Due to various reasons such as waiting or emptying, after emptying, the activated coal feeder is light in weight and the output is not reduced, which is easy to cause the metal fatigue of the springs of the activated coal feeder and breakage. In addition, the empty vibration also causes the safety hazards of the loosening of the inclined support foundation and the unbonding of the steel bars, greatly shortens the service life of the equipment, and affects the unloading efficiency and production. SUMMARY

[0004] In view of this, the present application provides a variable force wheel with position limiting protection and an activated coal feeder. A limit stop is connected to the lower end of the piston. When the activated coal feeder is in the maximum output state and is empty, the lower end of the limit stop abuts against the bottom of the cylinder to prevent the force wheel spring from continuing to stretch downward and finally from being in the limit stretching state, thereby prolonging the service life of the position limiting protection device of the variable force wheel.

[0005] Specifically, the technical scheme comprises the following:

[0006] In the first aspect, the present application provides a variable force wheel with position limiting protection, which comprises: a force wheel spring, a piston and a limit stop, the piston is connected to the lower end of the force wheel spring, and the limit stop is connected to the lower end of the piston.

[0007] The center of the limit stop and the center of the piston coincide in the vertical direction. When the activated coal feeder is in the maximum output state and is empty, the lower end of the limit stop abuts against the bottom of the cylinder to prevent the force wheel spring from continuing to stretch downward and to make the force wheel spring be in the limit stretching state.

[0008] Optionally, the position limiter is a first hollow cylinder structure, and the height of the first hollow cylinder structure is 30-50 mm.

[0009] Optionally, one end of the position limiter is provided with a positioning part, and the positioning part is a convex part, and the convex part is a second hollow cylinder structure.

[0010] The convex part and the position limiter are concentrically formed integrally.

[0011] The lower end of the piston is centrally provided with a counterbore, and the convex part is matched with the counterbore.

[0012] The position limiter is connected with the counterbore through the positioning part and is threadedly connected with the piston.

[0013] Optionally, the position limiter is made of nylon material.

[0014] In a second aspect, the embodiment of the present application provides an activated coal feeder, which comprises the position-limited and variable-force wheel as described in any one of the above.

[0015] The technical scheme provided by the embodiment of the present application has at least the following beneficial effects:

[0016] The position limiter is connected to the lower end center of the piston, and the center of the position limiter coincides with the center of the piston in the vertical direction. When the activated coal feeder is in the maximum output state and is in the empty state, the load capacity of the activated coal feeder is reduced, the vibration frequency of the force wheel spring is maximum, and the elongation of the force wheel spring is increased. When the elongation of the force wheel spring increases to a certain value, the lower end of the position limiter abuts against the bottom of the cylinder, preventing the force wheel spring from continuing to stretch downward to generate extreme stretching, and metal fatigue and breakage occur, thereby achieving the purpose of protecting the force wheel spring and prolonging the service life of the position-limited and variable-force wheel. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structure of the position-limited and variable-force wheel according to the embodiment of the present application is shown in the figure.

[0019] The reference numerals in the figure are respectively:

[0020] 1-force wheel spring;

[0021] 2-piston;

[0022] 3-limiter;

[0023] 4-cylinder.

[0024] The specific embodiments of the present application have been shown and described in the above-described drawings and the following detailed description. These drawings and detailed description are not intended to limit the scope of the inventive concept in any way, but are merely meant to illustrate the inventive concept to one of ordinary skill in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by one of ordinary skill in the art without any creative work fall within the scope of the present application.

[0026] To make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0027] Unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the meanings understood by one of ordinary skill in the art to which the present application belongs. The terms "first", "second", and similar terms used in the present application do not represent any order, number, or importance, but are only used to distinguish different components. Similarly, the terms "one" or "a" and similar terms do not represent a quantity limitation, but represent the existence of at least one. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right", and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships are also changed accordingly.

[0028] To facilitate understanding of the present application, the general structure of the variable force wheel with limit protection and the activated coal feeder and its application are described exemplarily herein.

[0029] Figure 1 Structure diagram of the variable force wheel with limit protection according to the embodiments of the present application.

[0030] As Figure 1As shown, the variable force wheel with position-limiting protection according to the embodiment of the present application comprises a force wheel spring 1, a piston 2 and a position limiter 3, the piston 2 is connected to the lower end of the force wheel spring 1, and the position limiter 3 is connected to the lower end of the piston 2; the center of the position limiter 3 coincides with the center of the piston 2 in the vertical direction, and when the activated coal feeder is in the maximum output state and appears to be in the empty load state, the lower end of the position limiter 3 abuts against the bottom of the cylinder 4 to prevent the force wheel spring 1 from continuing to stretch downward and to make the force wheel spring 1 in the limit stretching state.

[0031] According to the present application, the position limiter is connected to the lower end center of the piston, and the center of the position limiter coincides with the center of the piston in the vertical direction, and when the activated coal feeder is in the maximum output state and appears to be in the empty load state, the load bearing capacity of the activated coal feeder is reduced, the vibration frequency of the force wheel spring is maximum, the elongation of the force wheel spring is increased, and when the elongation of the force wheel spring is increased to a certain value, the lower end of the position limiter abuts against the bottom of the cylinder to prevent the force wheel spring from continuing to stretch downward and to generate the limit stretching, and metal fatigue is generated to break, thereby achieving the purpose of protecting the force wheel spring and prolonging the service life of the variable force wheel with position-limiting protection.

[0032] As shown in the figure, Figure 1 The position limiter 3 is a first hollow cylindrical structure, and the height of the first hollow cylindrical structure is 30mm-50mm.

[0033] When the activated coal feeder is in the empty load state, the vibration frequency of the force wheel spring 1 is maximum, and the limit stretching is easily generated. The height value of the position limiter 3 is set according to the maximum output value of the activated coal feeder, so that the limit stretching amount of the force wheel spring 1 is shortened by 30mm-50mm, thereby achieving the purpose of protecting the force wheel spring 1 and avoiding fatigue breakage due to limit stretching.

[0034] As shown in the figure, Figure 1 One end of the position limiter 3 is provided with a positioning part, the positioning part is a protruding part, the protruding part is a second hollow cylindrical structure, the protruding part and the position limiter 3 are concentrically formed as a whole, the lower end center of the piston is provided with a counterbore, the protruding part is matched with the counterbore, and the position limiter is connected with the piston through the positioning part and the counterbore.

[0035] In order to facilitate the installation of the position limiter 3 and the piston 2, the bolt at the lower end of the piston 2 is disassembled by using the original connecting structure between the piston 2 and the force wheel spring 1, the lower end center of the piston 2 is provided with a counterbore, and the protruding part at one end of the position limiter 3 is inserted into the counterbore to play the role of installation and positioning.

[0036] Since the position limiter 3 and the protruding part both have a central through hole, the disassembled bolt is inserted into the bottom of the position limiter 3 and is connected with the internal thread of the piston 2.

[0037] As shown in the figure, Figure 1As shown, the position limiter 3 is made of nylon material.

[0038] The weight of the position limiter 3 needs to match the weight of the eccentric block, while trying to reduce the influence of the weight of the position limiter 3 on the weight of the piston 2, the nylon material is light in weight, which can ensure the use effect of the position-limited variable force wheel.

[0039] The embodiment of the present application provides an activated coal feeder, which comprises the position-limited variable force wheel according to the above-mentioned embodiment, since the position-limited variable force wheel according to the embodiment of the present application has the above-mentioned technical effects, the activated coal feeder according to the present application also has corresponding technical effects, namely, the present application sets the force wheel spring 1, the piston 2 and the position limiter 3, the piston 2 is connected to the lower end of the force wheel spring 1, and the position limiter 3 is connected to the lower end of the piston 2; the center of the position limiter 3 coincides with the center of the piston 2 in the vertical direction, when the activated coal feeder is in the maximum output state and appears to be empty, the lower end of the position limiter 3 abuts against the bottom of the cylinder 4, so as to prevent the force wheel spring 1 from continuing to stretch downward and make the force wheel spring 1 be in the limit stretching state, prolong the service life of the position-limited variable force wheel and further prolong the service life of the activated coal feeder.

[0040] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. It is intended that the present application cover any and all variations of the present application which come within the scope of the present application along with its general principles and features. The specification and examples are to be construed as merely illustrative of preferred embodiments of the present application and not limitative in any way whatsoever.

[0041] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A variable force wheel with limit protection, characterized in that, include: A force wheel spring, a piston, and a limiter, wherein the piston is connected to the lower end of the force wheel spring, and the limiter is connected to the lower end of the piston; The center of the limiter coincides with the center of the piston in the vertical direction. When the activated coal feeder is in the maximum output state and there is no load, the lower end of the limiter abuts against the bottom of the cylinder to prevent the force wheel spring from continuing to stretch downward and to keep the force wheel spring in the ultimate stretch state. One end of the limiter is provided with a positioning part, which is a protrusion. The protrusion and the limiter are formed concentrically and integrally. The piston has a countersunk hole at its lower end center, and the protrusion is adapted to the countersunk hole.

2. The variable force wheel with limit protection according to claim 1, characterized in that, The limiter is a first hollow column structure, and the height of the first hollow column structure is 30mm-50mm.

3. The variable force wheel with limit protection according to claim 2, characterized in that, The protrusion is a second hollow column structure; The limiter is connected to the countersunk hole via the positioning part and then threadedly connected to the piston.

4. The variable force wheel with limit protection according to claim 1, characterized in that, The limiter is made of nylon material.

5. An activated coal feeder, characterized in that, Includes a variable force wheel with limit protection according to any one of claims 1-4.

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