A tensioned moving trolley and a retractable belt conveyor for the chute

Abstract

This application discloses a tensioning traveling trolley and a telescopic belt conveyor for the roadway. The tensioning traveling trolley includes: a frame with symmetrically mounted traveling wheels on both sides of its bottom, the traveling wheels being supported on guide rails; a redirecting roller and a drag roller mounted on the frame; guide wheels symmetrically arranged on the left and right sides of the frame and contacting the side walls of the guide rails; and a hydraulic adjustment mechanism, including staggered first and second hydraulic cylinders, wherein the first hydraulic cylinder is located on the first side of the frame, and the second hydraulic cylinder is located on the second side of the frame, with the first and second sides opposite to each other. This embodiment of the application, by incorporating guide wheels and a hydraulic adjustment mechanism on the tensioning traveling trolley, effectively prevents the tensioning trolley from derailing or veering during operation, ensuring normal production at the mining face and reducing production interruptions caused by trolley malfunctions.

Description

Technical Field

[0001] This application generally relates to the field of coal mining equipment technology. More specifically, this application relates to a tensioning traveling trolley; further, this application also relates to a roadway telescopic belt conveyor. Background Technology

[0002] In underground coal mine telescopic belt conveyors, the traveling tension trolley of the belt storage bin mainly adjusts the belt tension by moving on the guide rail via traveling wheels, while relying on guide wheels on both sides to limit lateral displacement. However, due to the complex geological conditions of uneven underground mine roadways and the tendency for sudden changes in belt tension, the guide wheels' gap-guided method is insufficient to counteract dynamic impact forces during operation. This can easily lead to lateral deviation of the tension trolley, causing the redirecting drum to tilt, ultimately resulting in belt misalignment. This not only causes problems such as coal spillage and belt wear, but may also induce safety accidents.

[0003] In view of this, there is an urgent need to provide a solution for a tensioned traveling trolley and a retractable belt conveyor in the chute, so as to correct deviation in real time and improve travel stability. Utility Model Content

[0004] In order to at least solve one or more of the technical problems mentioned above, this application proposes a tensioned traveling trolley and a stretchable belt conveyor for real-time correction of deviation and improvement of walking stability in several aspects.

[0005] In a first aspect, this application provides a tensioning mobile trolley, comprising: a frame with symmetrically mounted traveling wheels on both sides of its bottom, the traveling wheels being supported on a guide rail; a redirecting roller and a drag roller disposed on the frame; guide wheels symmetrically disposed on the left and right sides of the frame and contacting the sidewalls of the guide rail; and a hydraulic adjustment mechanism comprising a first hydraulic cylinder and a second hydraulic cylinder disposed alternately, wherein the first hydraulic cylinder is disposed on a first side of the frame, the second hydraulic cylinder is disposed on a second side of the frame, and the first side and the second side are disposed opposite to each other.

[0006] In some embodiments, the first hydraulic cylinder and the second hydraulic cylinder are symmetrically mounted on the same pair of lugs at the bottom of the frame via pins, and the extension and retraction directions of the first hydraulic cylinder and the second hydraulic cylinder are opposite.

[0007] In some embodiments, a fixing plate is provided on the frame, and the fixing plate is provided with a control valve for controlling the extension and retraction of the first hydraulic cylinder and the second hydraulic cylinder.

[0008] In some embodiments, the piston rods of both the first hydraulic cylinder and the second hydraulic cylinder are provided with baffles at their ends.

[0009] In some embodiments, the contact area of ​​the baffle is greater than the cross-sectional area of ​​the piston rod in the first hydraulic cylinder.

[0010] In some embodiments, the frame has symmetrically arranged rail wheels on both sides of the lower frame, and the tensioning trolley includes at least two rail wheels. Each rail wheel includes a mounting part and a roller body connected in sequence. The horizontal cross-sectional area of ​​the mounting part is smaller than the horizontal cross-sectional area of ​​the roller body. The end of the mounting part away from the roller body is fixed to the base frame of the frame, and the roller body is embedded in the groove of the guide rail and limited in position.

[0011] In some embodiments, storage bin side frames are symmetrically arranged on both sides of the storage bin aisle, and the top of the storage bin side frames carries guide rails, which serve as the running track for the tensioning mobile trolley.

[0012] In a second aspect, this application provides a trough-type retractable belt conveyor, which includes the aforementioned tensioning traveling trolley.

[0013] By incorporating the tensioning trolley described above, this application effectively prevents the trolley from derailing or veering off course through the installation of guide wheels and a hydraulic adjustment mechanism. The guide wheels ensure accurate trolley direction, reducing swaying and deviation, and improving operational stability and reliability. The hydraulic adjustment mechanism flexibly adjusts according to the trolley's condition, further ensuring normal movement. These improvements enhance the safe and stable operation of the belt conveyor, safeguard production order at the mining face, and reduce interruptions caused by malfunctions. Attached Figure Description

[0014] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts, wherein:

[0015] Figure 1 A front view of the tensioning mobile carriage according to an embodiment of this application is shown;

[0016] Figure 2 A top view of the tensioning mobile carriage according to an embodiment of this application is shown;

[0017] Figure 3 A left view of the tensioning trolley according to an embodiment of this application is shown.

[0018] In the picture: 100, tensioned moving trolley;

[0019] 101. Chassis; 102. Running wheel; 103. Guide wheel; 104. Rail roller; 105. Diverting roller; 106. Trailing roller; 107. First hydraulic cylinder; 108. Second hydraulic cylinder; 109. Ear plate; 110. Baffle; 111. Fixing plate; 112. Control valve; 113. Side frame of the belt storage compartment; 114. Pin; 115. Guide rail. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be understood that the terms "comprising" and "including" used in the specification and claims of this application indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this specification and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0023] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0024] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2As shown, in some embodiments, this application provides a tensioning mobile trolley 100, including: a frame 101, on which traveling wheels 102 are symmetrically mounted on both sides of its bottom, the traveling wheels 102 being supported on a guide rail 115; a redirecting roller 105 and a towing roller 106 are provided on the frame 101; guide wheels 103 are symmetrically arranged on the left and right sides of the frame 101 and contact the side wall of the guide rail 115; and a hydraulic adjustment mechanism, including a first hydraulic cylinder 107 and a second hydraulic cylinder 108 arranged alternately, wherein the first hydraulic cylinder 107 is arranged on a first side of the frame 101, and the second hydraulic cylinder 108 is arranged on a second side of the frame 101, the first side and the second side being arranged opposite to each other.

[0026] The tensioning traveling trolley 100 provided in this application includes a frame 101, guide wheels 103, and a hydraulic adjustment mechanism. Specifically, the frame 101 is the main frame structure of the entire tensioning traveling trolley 100, on which a redirecting roller 105 and a drag roller 106 are mounted. The main function of the redirecting roller 105 is to change the running direction of the belt, enabling the belt to transition and transmit between different parts of the conveyor along a predetermined path. The drag roller 106 is used to support and guide the belt, ensuring the stability and correct position of the belt during operation and preventing abnormal situations such as belt deviation or derailment.

[0027] Symmetrical wheels 102 are mounted on both sides of the bottom of the frame 101. These wheels 102 are supported on the guide rail 115, allowing the trolley to move smoothly on the guide rail 115. Simultaneously, guide wheels 103 are symmetrically arranged on the left and right sides of the frame 101. The guide wheels 103 contact the side walls of the guide rail 115 and provide guidance when the tensioned trolley 100 moves along the guide rail 115, ensuring the accurate direction of the trolley's movement on the guide rail 115, reducing lateral swaying or deviation during movement, thereby improving the stability and reliability of the trolley's operation and reducing the risk of derailment.

[0028] Furthermore, the tensioning carriage 100 in this application also includes a hydraulic adjustment mechanism. This mechanism comprises a first hydraulic cylinder 107 and a second hydraulic cylinder 108 arranged in an alternating configuration. The first hydraulic cylinder 107 is located on the first side of the frame 101, and the second hydraulic cylinder 108 is located on the second side of the frame 101, with the first and second sides facing each other. In other words, this application has two hydraulic cylinders, one installed in a forward-facing and one in a reverse-facing configuration. When the tensioning carriage becomes misaligned during the tensioning process, the extension and retraction of the hydraulic cylinders can adjust the position of the center line of the tensioning carriage rollers, ensuring the carriage maintains the correct walking posture and preventing problems such as belt misalignment caused by carriage position deviation.

[0029] The solution provided in this application, by incorporating guide wheels 103 and a hydraulic adjustment mechanism, effectively prevents the tensioning trolley from derailing or veering during operation. Specifically, guide wheels 103 provide precise guidance for the trolley, ensuring its accurate direction of movement on the guide rail 115, reducing lateral swaying or deviation, thereby improving the stability and reliability of the trolley's operation and reducing the risk of derailment. The hydraulic adjustment mechanism can be flexibly adjusted according to the actual operating status of the trolley, further ensuring its normal movement. These improvements not only enhance the safe and stable operation of the belt conveyor but also ensure the normal production order of the mining face and reduce production interruptions caused by trolley malfunctions.

[0030] In one specific implementation, the first hydraulic cylinder 107 and the second hydraulic cylinder 108 are symmetrically mounted on the same pair of lugs 109 at the bottom of the frame 101 via pins 114, and the extension and retraction directions of the first hydraulic cylinder 107 and the second hydraulic cylinder 108 are opposite.

[0031] In this application, ear plates 109 are machined at the bottom of the tensioning trolley frame 101. After being enlarged, the ear plates 109 are used to install and fix hydraulic cylinders. Specifically, the first hydraulic cylinder 107 and the second hydraulic cylinder 108 are installed in the enlarged holes of the same pair of ear plates 109 at the bottom of the frame 101 in a staggered and symmetrical manner with the help of pins 114. The diameter of the enlarged holes is larger than the diameter of the pins 114. This design allows the pins 114 to swing slightly within the enlarged holes, thereby better adapting to the slight undulations and deviations of the track during the operation of the tensioning trolley. This further enhances the flexibility and stability of the tensioning trolley during adjustment, helps prevent the tensioning trolley from jamming or excessively deviating during tensioning operations or changes in track conditions, and ensures the smooth operation of the entire belt conveyor system.

[0032] In one specific embodiment, both the piston rods of the first hydraulic cylinder 107 and the second hydraulic cylinder 108 are provided with baffles 110 at their ends. The contact area of ​​the baffles 110 is larger than the cross-sectional area of ​​the piston rod in the first hydraulic cylinder 107.

[0033] In the scheme of this application, in the hydraulic adjustment mechanism of the tensioning trolley, both the piston rod ends of the first hydraulic cylinder 107 and the second hydraulic cylinder 108 are provided with baffles 110, and the contact area of ​​the baffles 110 is larger than the cross-sectional area of ​​the piston rod in the first hydraulic cylinder 107. This arrangement significantly increases the contact area between the piston rod end of the hydraulic cylinder and the outer side of the guide rail 115. When the tensioning trolley is adjusted by the hydraulic cylinder, the baffles 110 at the piston rod end can more evenly transmit the force to the guide rail 115, thereby improving the stability and reliability of the adjustment, avoiding damage to the guide rail 115 due to excessive local force, and reducing trolley deviation or vibration caused by uneven force. In addition, increasing the contact area can reduce the pressure per unit area, reduce the wear of the guide rail 115, and extend its service life.

[0034] In one specific implementation, a fixing plate 111 is provided on the frame 101, and the fixing plate 111 is provided with a control valve 112 for controlling the extension and retraction of the first hydraulic cylinder 107 and the second hydraulic cylinder 108.

[0035] In this application, a fixing plate 111 is provided on the frame 101. This fixing plate 111 is equipped with a control valve 112 for controlling the extension and retraction of the first hydraulic cylinder 107 and the second hydraulic cylinder 108. As the control core of the hydraulic system, the control valve 112 can precisely regulate the flow and pressure of the hydraulic oil, thereby achieving precise control of the hydraulic cylinders. The control valve 112 allows the operator to flexibly control the extension and retraction of the two hydraulic cylinders according to the on-site working conditions and the actual operating state of the tensioning trolley, thereby adjusting the position and attitude of the trolley on the guide rail 115.

[0036] like Figure 3 As shown, in a specific embodiment, the frame has symmetrically arranged rail wheels 104 on both sides of the lower frame. The tensioning trolley 100 includes at least two rail wheels 104. Each rail wheel 104 includes a mounting part and a roller body connected in sequence. The horizontal cross-sectional area of ​​the mounting part is smaller than the horizontal cross-sectional area of ​​the roller body. The end of the mounting part away from the roller body is fixed to the base frame of the frame 101. The roller body is embedded in the groove of the guide rail 115 and is limited in position.

[0037] In the tensioning trolley 100 provided in this application, two guide wheels 104 are provided on each side of its base frame. Each guide wheel 104 consists of a mounting part and a guide roller body connected in sequence, both of which are cylindrical structures. The diameter of the guide roller body is larger than that of the mounting part, that is, the horizontal cross-sectional area of ​​the mounting part is smaller than that of the guide roller body. The end of the mounting part away from the guide roller body is fixedly connected to the base frame of the trolley frame 101. The guide roller body is embedded in the groove of the guide rail 115 and plays a limiting role therein. In this way, the trolley is limited in the vertical direction, effectively preventing the tensioning trolley from tilting upward or deviating from the guide rail 115 during operation. This not only ensures the stability and accuracy of the tensioning trolley during tensioning operation and movement, but also significantly improves the smoothness and safety of the entire belt conveyor system.

[0038] In one specific implementation, storage bin side frames 113 are symmetrically arranged on both sides of the storage bin aisle. The top of the storage bin side frame 113 carries a guide rail 115, and the guide rail 115 serves as the running track of the tensioning trolley 100.

[0039] In the solution provided in this application, symmetrical storage bin side frames 113 are arranged on both sides of the storage bin roadway, with guide rails 115 on their tops, forming the running track of the tensioning traveling trolley 100. During use, symmetrically mounted traveling wheels 102 on both sides of the trolley's underframe support the guide rails 115, ensuring the trolley moves smoothly along the roadway. The layout of the storage bin side frames 113 and guide rails 115 provides a stable path and support for the trolley, ensuring the reliability and effectiveness of the tensioning system, preventing the trolley from deviating or falling off track, improving the safety and stability of the belt conveyor operation, and safeguarding production at the coal mine working face.

[0040] In some embodiments, this application also provides a trough retractable belt conveyor, which includes the aforementioned tensioning trolley 100.

[0041] This application provides a roadway extendable belt conveyor, which includes the tensioning traveling trolley 100 described in the above embodiment. Because the tensioning traveling trolley 100 is equipped with a track-locking wheel 104 and a hydraulic adjustment mechanism, it can achieve both horizontal and vertical limiting, effectively preventing deviation and derailment. Based on this design, the roadway extendable belt conveyor can maintain stable operation even under complex geological conditions in underground coal mines, significantly improving the safety, reliability, and production efficiency of the belt conveyor, while reducing equipment maintenance costs and labor intensity, effectively ensuring the normal production order of coal mine working faces.

[0042] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A tensioning trolley, characterized in that include: The frame (101) has symmetrically mounted traveling wheels (102) on both sides of its bottom, and the traveling wheels (102) are supported on the guide rail; the frame (101) is provided with a redirecting roller (105) and a towing roller (106). Guide wheels (103) are symmetrically arranged on the left and right sides of the frame (101) and contact the sidewalls of the guide rails; and The hydraulic adjustment mechanism includes a first hydraulic cylinder (107) and a second hydraulic cylinder (108) arranged alternately, wherein the first hydraulic cylinder (107) is disposed on a first side of the frame (101) and the second hydraulic cylinder (108) is disposed on a second side of the frame (101), with the first side and the second side being disposed opposite to each other.

2. The tensioning traveler according to claim 1, characterized in that The first hydraulic cylinder (107) and the second hydraulic cylinder (108) are symmetrically mounted on the same pair of lugs (109) at the bottom of the frame (101) via pins (114), and the extension and retraction directions of the first hydraulic cylinder (107) and the second hydraulic cylinder (108) are opposite.

3. The tensioning traveler according to claim 2, characterized in that The frame (101) is provided with a fixing plate (111), and the fixing plate (111) is provided with a control valve (112) for controlling the extension and retraction of the first hydraulic cylinder (107) and the second hydraulic cylinder (108).

4. The tensioning traveler according to claim 1, characterized in that Both the piston rods of the first hydraulic cylinder (107) and the second hydraulic cylinder (108) are provided with baffles (110).

5. The tensioning traveler according to claim 4, characterized in that The contact area of ​​the baffle (110) is greater than the cross-sectional area of ​​the piston rod in the first hydraulic cylinder (107).

6. A tensioning trolley according to any one of claims 1-5, characterized in that The frame has symmetrically arranged rail wheels (104) on both sides of the low frame. The tensioning trolley 100 includes at least two rail wheels (104). Each rail wheel (104) includes a mounting part and a roller body connected in sequence. The horizontal cross-sectional area of ​​the mounting part is smaller than the horizontal cross-sectional area of ​​the roller body. The end of the mounting part away from the roller body is fixed to the base frame of the frame (101). The roller body is embedded in the groove of the guide rail and is limited.

7. The tensioning traveler according to claim 6, characterized in that The storage bin has symmetrically arranged storage bin side frames (113) on both sides of the aisle. The top of the storage bin side frame (113) carries the guide rail, and the guide rail serves as the running track of the tensioning moving trolley (100).

8. A crossheading retractable belt conveyor, characterized in that, The stretchable belt conveyor in the chute includes the tensioning traveling trolley (100) as described in any one of claims 1-7.

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