Novel sliding cable trolley traction arm device of movable coal blending vehicle

Abstract

The utility model discloses a novel sliding cable trolley traction arm device of a movable coal blending vehicle, which comprises a sliding cable trolley assembly and a traction arm, the traction arm adopts a two-section structure connected by a flange, the lower section of the traction arm is connected to the coal blending vehicle, and the upper section of the traction arm is connected with a horizontal support arm used for abutting against the sliding cable trolley assembly. A sudden stop protection switch is arranged at the opposite position of the traction arm, the sudden stop protection switch is connected into a control circuit of the coal blending vehicle and used for triggering the coal blending vehicle to stop suddenly after the horizontal supporting arm deviates or deforms, and gaskets for dispersing abutting stress are arranged on the sliding cable trolley assembly or / and the horizontal supporting arm. The utility model provides a novel traction arm device for a sliding cable trolley of a movable coal blending vehicle, which can solve the problems that the sliding cable trolley deflects and is jammed due to the fact that the sliding cable trolley deflects due to the fact that the sliding cable trolley deflects due to the fact that the sliding cable trolley deflects due to the fact that the sliding cable trolley deflects due to the fact that the sliding cable trolley deflects due to the fact that the sliding cable trolley deflects due to the fact that the sliding cable trolley deflects due to the fact that a protection bolt is sheared off.

Description

Technical Field

[0001] The utility model relates to a traction arm device of a mobile coal distribution vehicle in the coal conveying system of the power industry. Specifically, it relates to a new type of traction arm device for a sliding cable trolley of a mobile coal distribution vehicle. Background Art

[0002] With the continuous growth of energy demand, the power industry has developed particularly rapidly. As one of the key equipment for power production, the operation efficiency and safety of the coal conveying system are crucial for the operation of the entire power plant. The coal conveying system is the coal transportation equipment and its control equipment from the coal unloading point to the coal yard or from the coal yard to the boiler coal bunker, and has functions such as coal feeding, coal distribution, and coal storage.

[0003] The coal distribution vehicle in the coal conveying system of a thermal power plant is a special coal distribution equipment that unloads the coal on the conveyor belt into each coal bunker. The coal distribution vehicle is also called an electric double-drum unloading vehicle or a mobile unloading trolley. It is generally installed on a fixed conveyor belt above the raw coal bunker or buffer bunker to complete the tasks of unloading and coal distribution. It can improve the degree of coal distribution automation and make the coal unloading at each position of the coal bunker uniform. When the mobile coal distribution vehicle is distributing coal, it needs to move back and forth above each raw coal bunker, so a sliding cable power supply method is adopted. The sliding cable trolley is a device that fixes the sliding cable and can move on the track. The traction arm device is a device that connects the mobile coal distribution vehicle and the sliding cable trolley, and pulls or pushes the sliding cable trolley to move back and forth during the movement of the coal distribution vehicle, thereby driving the sliding cable to retract and extend.

[0004] With the continuous development of our society, the costs of personnel and equipment are also increasing continuously. Once production safety and equipment accidents occur, the losses are also increasing continuously. Therefore, the requirements for the power production safety management level are also increasing continuously. During the long-term operation of the coal conveying system, with the in-depth development of the coal blending and firing work, the coal feeding time of the coal conveying system becomes longer, and the mobile coal distribution vehicle above the raw coal bunker moves back and forth frequently. During the movement of the sliding cable trolley, the trolley may be skewed and jammed, and even the traction arm may be deformed. The repair process of the traction arm takes a long time, and the coal conveying system cannot normally feed coal and distribute coal, affecting the coal supply safety of the unit. The repair process involves operations with high risks such as working at heights, hot work, and hoisting, and there are relatively large potential safety hazards.

[0005] However, at present, in the existing coal conveying system of power plants, the front-end gasket of the traction arm cannot be pushed onto the entire working surface of the first group of sliding cable trolley gaskets throughout the entire section of the sliding cable trolley track, resulting in uneven thrust. The force is skewed at some positions, causing the sliding cable trolley to be skewed and jammed, and accelerating wear. The traction arm and the vertical pole are made of channel steel, with low strength. When the sliding cable trolley is jammed, it is easy to cause its deformation. And when the traction arm is deformed, there is no electrical emergency stop mechanism for protection, and it is impossible to stop the mobile coal distribution vehicle in time, resulting in more serious deformation of the traction arm, shortening the service life of the traction arm device, and easily triggering safety accidents. Summary of the Utility Model

[0006] In view of the defects in the prior art, the present utility model provides a novel traction arm device for the cable-sliding trolley of a mobile coal distribution vehicle, which can solve the problems that the coal feeding time of the coal conveying system becomes longer, and when the mobile coal distribution vehicle above the raw coal bunker moves back and forth frequently, the cable-sliding trolley is deflected and jammed during the movement, and even the traction arm is deformed. It avoids the long time in the repair process of the traction arm, and the coal conveying system cannot normally feed coal and distribute coal.

[0007] In order to achieve the above purpose, the specific technical solutions adopted by the present utility model are as follows:

[0008] A novel traction arm device for the cable-sliding trolley of a mobile coal distribution vehicle, which is characterized in that: the traction arm adopts a two-section structure connected by a flange, the lower section is connected to the coal distribution vehicle, and the upper section is connected with a horizontal arm for abutting against the cable-sliding trolley assembly. An emergency stop protection switch is arranged at the relative position of the traction arm, and the emergency stop protection switch is connected to the control circuit of the coal distribution vehicle, and is used to trigger the emergency stop of the coal distribution vehicle after the horizontal arm is offset or deformed. A gasket for dispersing the abutting stress is arranged on the cable-sliding trolley assembly or / and the horizontal arm.

[0009] Furthermore, the flange is fixed by a predetermined number of protection bolts, and the protection bolts adopt M14 bolts.

[0010] Furthermore, the lower section of the traction arm adopts a φ133 steel pipe, and the upper section of the traction arm adopts a φ159 steel pipe.

[0011] Furthermore, the horizontal arm adopts a 14# channel steel, and an induction round hole is arranged at one end of the horizontal arm.

[0012] Furthermore, the emergency stop protection switch includes an L-shaped bracket and an induction probe. The L-shaped bracket is detachably installed on the lower section of the traction arm through a hoop, and the induction probe is electrically connected to the pull rope switch of the coal distribution vehicle through the wiring of the L-shaped bracket.

[0013] Furthermore, the induction probe is adapted to the induction round hole.

[0014] Furthermore, a reinforcing column is abutted between the horizontal arm and the upper section of the traction arm, and the reinforcing column adopts a 14# channel steel.

[0015] Furthermore, the bottom of the cable-sliding trolley is provided with a clamping plate and a locking component. A cable is movably sleeved between the bottom of the cable-sliding trolley and its corresponding clamping plate, and a cable protection chain is fixedly connected between adjacent cable-sliding trolleys.

[0016] Compared with the prior art, the remarkable effect of the present utility model is:

[0017] (1) The traction arm device of the cable-sliding trolley of the mobile coal blending truck of the present utility model widens the gasket on the cable-sliding trolley, further ensuring that when there are changes in the straightness and height of the track, the traction arm gasket can be pushed in the middle of the cable-sliding trolley gasket, making the force exerted by the traction arm more uniform, and the force between the cable-sliding trolley and the traction arm is not skewed, preventing the cable-sliding trolley from being skewed and jammed, reducing wear, better protecting the traction arm, and increasing the service life of the traction arm.

[0018] (2) The traction arm device of the cable-sliding trolley of the mobile coal blending truck of the present utility model adopts a segmented traction arm. The traction arm includes an upper traction arm section and a lower traction arm section. The lower traction arm section uses a φ133 steel pipe and is welded to the I-beam of the steel structure of the coal blending truck; the upper traction arm section uses a φ159 steel pipe with a wall thickness of 10 mm. The thick pipe sleeves the thin pipe and is connected by flanges using M14 bolts. The horizontal traction arm uses a 14# channel steel. A 14# channel steel is used for reinforcement between the φ159 steel pipe and the horizontal traction arm; the traction arm vertical pole and the I-beam of the steel structure of the coal blending truck are reinforced with gusset plates. The number of protective bolts on the flange can be determined according to the maximum force exerted by the traction arm of the mobile coal blending truck on the cable-sliding trolley estimated from the power of the double traveling motors of the coal blending truck. When the trolley is jammed without deformation or damage, the bolts can be self-sheared under the action of torque to protect the traction arm from deformation and reduce the loss of the traction arm. When the bolts are sheared, it is also more convenient to install and replace them, greatly reducing the workload of the staff and lowering the maintenance and repair costs.

[0019] (3) The traction arm device of the cable-sliding trolley of the mobile coal blending truck of the present utility model is equipped with an emergency stop protection switch. During the operation of the equipment, if the cable-sliding trolley tilts and jams, and the position of the induction probe on the emergency stop protection switch deviates from the induction hole on the horizontal traction arm, the emergency stop protection switch sends an emergency stop command to the coal blending truck to protect the traction arm from deformation, avoid safety accidents caused by the jamming of the cable-sliding trolley during coal blending, reduce the occurrence of accidents, extend the service life of the traction arm, ensure the safe and reliable operation of the equipment, avoid the operation risks of personnel, and have high safety. Description of the Drawings

[0020] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0021] Figure 1 It is a three-dimensional view of the traction arm device of the cable-sliding trolley of the mobile coal blending truck in Embodiment 1;

[0022] Figure 2 It is a front view of the traction arm device of the cable-sliding trolley of the mobile coal blending truck in Embodiment 1;

[0023] Figure 3 It is a side view of the traction arm device of the cable-sliding trolley of the mobile coal blending vehicle in Embodiment 1;

[0024] Markings in the figure: 1 - Cable-sliding trolley assembly, 2 - Traction arm, 3 - Flange, 4 - Emergency stop protection switch, 5 - Reinforcement column, 101 - First gasket, 102 - Locking component, 103 - Clamping plate, 104 - Cable-sliding protection chain, 105 - Cable-sliding, 201 - Lower section of the traction arm, 202 - Upper section of the traction arm, 203 - Horizontal support arm, 204 - Induction round hole, 205 - Second gasket, 301 - Protection bolt, 401 - L-shaped bracket, 402 - Induction probe, 403 - Hoop. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and advantages to be solved by the present utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0027] Figures 1 to 3 The first embodiment of the present utility model is shown: a new type of cable-sliding trolley traction arm device for a mobile coal blending vehicle, including a cable-sliding trolley assembly 1 and a traction arm 2, characterized in that: the traction arm 2 adopts a two-section structure connected by a flange 3, its lower section is connected to the coal blending vehicle, and its upper section is connected with a horizontal support arm 203 for abutting against the cable-sliding trolley assembly 1. An emergency stop protection switch 4 is arranged at a relative position of the traction arm 2, and the emergency stop protection switch 4 is connected to the control circuit of the coal blending vehicle and is used to trigger an emergency stop of the coal blending vehicle after the horizontal support arm 203 is offset or deformed. Gaskets for dispersing abutting stress are arranged on the cable-sliding trolley assembly 1 or / and the horizontal support arm 203. Specifically, a first gasket 101 is arranged on the cable-sliding trolley, and a second gasket 205 is arranged on the horizontal support arm.

[0028] Please refer to Figure 1 and Figure 2, during specific implementation, the flange 3 is fixed using a predetermined number of protective bolts 301. The protective bolts 301 are M14 bolts. The maximum force exerted by the traction arm 2 of the coal distribution vehicle on the cable trolley assembly 1 can be estimated based on the power of the double traveling motors of the coal distribution vehicle to determine the number of protective bolts 301 on the flange 3. When the cable trolley assembly 1 jams and the horizontal support arm 203 is not deformed or damaged, the protective bolts 301 can be self-sheared under the action of torque to protect the horizontal support arm 203 from deformation and reduce the loss of the horizontal support arm 203. When the protective bolts 203 are sheared, the installation and replacement are more convenient, greatly reducing the workload of the staff and lowering the maintenance and repair costs.

[0029] Please refer to Figure 2 , during specific implementation, the lower section 201 of the traction arm uses a φ133 steel pipe, and the upper section 202 of the traction arm uses a φ159 steel pipe.

[0030] Please refer to Figure 1 and Figure 2 , during specific implementation, the horizontal support arm 203 uses a 14# channel steel, and an induction round hole 204 is provided at one end of the horizontal support arm 203.

[0031] Please refer to Figure 1 and Figure 2 , during specific implementation, the emergency stop protection switch 4 includes an L-shaped bracket 401 and an induction probe 402. The L-shaped bracket 401 is detachably installed on the lower section 201 of the traction arm through a hoop 403. The induction probe 402 is electrically connected to the pull cord switch of the coal distribution vehicle through wiring of the L-shaped bracket 401. When the protective bolt 301 is sheared and the horizontal support arm 203 deforms, the positions of the induction probe 402 and the induction round hole 204 shift, and then the emergency stop protection switch 4 issues an emergency stop signal to make the coal distribution vehicle stop suddenly, avoiding safety accidents caused by the jamming of the cable trolley 106 during coal distribution, ensuring the safe and reliable operation of the equipment, avoiding the operation risks of personnel, and having high safety.

[0032] Please refer to Figure 1 and Figure 2 , during specific implementation, the induction probe is adapted to the induction round hole.

[0033] Please refer to Figure 1 and Figure 2 , during specific implementation, a reinforcing column 5 is abutted between the horizontal support arm 203 and the upper section 202 of the traction arm. The reinforcing column 5 uses a 14# channel steel.

[0034] Please refer to Figure 3, during specific implementation, a clamping plate member 103 and a locking member 102 are provided at the bottom of the cable-sliding trolley 106. A cable-sliding 105 is movably sleeved between the bottom of the cable-sliding trolley 106 and the corresponding clamping plate member 103. A cable-sliding protection chain 104 is fixedly connected between adjacent cable-sliding trolleys 106.

[0035] In summary, the traction arm device of the cable-sliding trolley of the mobile coal blending vehicle is reasonably designed. The first gasket 101 on the cable-sliding trolley 106 is widened in this device, further ensuring that under the condition of changes in the straightness and height of the track, the second gasket 205 in the traction arm 2 can be pushed between the first gaskets 101 in the cable-sliding trolley 106, making the force applied by the traction arm 2 more uniform, and the force between the cable-sliding trolley 106 and the traction arm 2 not skewed, so as not to cause the cable-sliding trolley 106 to be skewed and jammed. The device adopts a segmented traction arm 2, which includes an upper traction arm segment 202 and a lower traction arm segment 201, and is connected by a flange 3 using protection bolts 301. The number of protection bolts 301 on the flange 3 can be determined according to the maximum force exerted by the traction arm 2 of the mobile coal blending vehicle on the cable-sliding trolley 106 estimated based on the power of the double traveling motors of the coal blending vehicle, and it is applicable to coal blending vehicles with various powers. When the cable-sliding trolley 106 is jammed without being deformed or damaged, the protection bolts 301 can be self-sheared under the action of torque to protect the traction arm 2 from deformation and reduce the loss of the traction arm 2. When the protection bolts 301 are sheared, the installation and replacement are more convenient, greatly reducing the workload of the staff and lowering the costs of maintenance and repair. When the cable-sliding trolley 106 is tilted and jammed, and the position of the induction probe 402 on the emergency stop protection switch 4 is offset from the induction round hole 204 on the horizontal support arm 203, the emergency stop protection switch 4 sends an emergency stop command to the coal blending vehicle, avoiding safety accidents caused by the jamming of the cable-sliding trolley 106 during coal blending, reducing the occurrence of accidents, prolonging the service life of the traction arm 2, ensuring the safe and reliable operation of the equipment, avoiding the operation risks of personnel, and having high safety.

[0036] Finally, it should be noted in the specification that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the specification of the present invention.

Claims

1. A novel traction arm device for a cable-sliding trolley of a mobile coal blending vehicle, comprising a cable-sliding trolley assembly and a traction arm, characterized in that: The traction arm adopts a two-section structure connected by a flange. Its lower section is connected to the coal blending vehicle, and its upper section is connected with a horizontal arm for abutting against the cable-sliding trolley assembly. An emergency stop protection switch is arranged at the relative position of the traction arm, and the emergency stop protection switch is connected to the control circuit of the coal blending vehicle for triggering an emergency stop of the coal blending vehicle after the horizontal arm deflects or deforms. A gasket for dispersing the abutting stress is arranged on the cable-sliding trolley assembly and / or the horizontal arm.

2. A traction arm device for a cable-sliding trolley of a new type of mobile coal blending vehicle according to claim 1, characterized in that: The flange is fixed with a predetermined number of protection bolts, and the protection bolts adopt M14 bolts.

3. A traction arm device for a cable trolley of a new type of mobile coal blending truck according to claim 2, characterized in that: The lower section of the traction arm adopts a φ133 steel pipe, and the upper section of the traction arm adopts a φ159 steel pipe.

4. A traction arm device for a cable-sliding trolley of a new type of mobile coal blending truck according to claim 3, characterized in that: The horizontal arm adopts a 14# channel steel, and an induction round hole is arranged at one end of the horizontal arm.

5. A traction arm device for a sliding cable trolley of a new type of mobile coal blending vehicle according to claim 4, characterized in that: The emergency stop protection switch includes an L-shaped bracket and an induction probe. The L-shaped bracket is detachably installed on the lower section of the traction arm through a hoop, and the induction probe is electrically connected to the pull cord switch of the coal blending vehicle through wiring of the L-shaped bracket.

6. The traction arm device of the cable-sliding trolley of a new type of mobile coal blending vehicle according to claim 5, characterized in that: The induction probe is adapted to the induction round hole.

7. A traction arm device for a sliding cable trolley of a new type of mobile coal blending vehicle according to claim 6, characterized in that: A reinforcing column is abutted between the horizontal arm and the upper section of the traction arm, and the reinforcing column adopts a 14# channel steel.

8. A traction arm device for a cable-sliding trolley of a new type of mobile coal blending vehicle according to claim 7, characterized in that: The bottom of the cable-sliding trolley is provided with a clamping plate member and a locking member. A cable is movably sleeved between the bottom of the cable-sliding trolley and its corresponding clamping plate member, and a cable protection chain is fixedly connected between adjacent cable-sliding trolleys.

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