Driving device, kiln car and tunnel kiln

Abstract

The invention discloses a driving device, a kiln car and a tunnel kiln. The driving device comprises a gear, the gear is sleeved with a chain, and a plurality of driving parts are fixed to the chain at intervals; and the stop block is fixed on the kiln car. The kiln car is driven by the driving device to move; stop blocks are arranged at the bottom of the kiln car at intervals in the running direction. The tunnel kiln comprises a kiln body, the kiln car and the driving device. A pit used for containing the gear and the chain is formed in the bottom of the kiln body, and the driving piece located on the chain on the upper side protrudes out of the pit. Due to the fact that the driving pieces are distributed at intervals, the continuous moving distance of the kiln car under the inertia effect is smaller than the distance between every two adjacent driving pieces, the check blocks can be separated from the driving pieces abutting against the check blocks when the check blocks move along with the kiln car, but the check blocks cannot be connected with the next driving piece before the check blocks are static, and the kiln car moving due to inertia cannot reversely drive an external motor.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of tunnel kilns, and in particular to a driving device, a kiln car and a tunnel kiln. Background Art

[0002] The tunnel kiln is a tunnel-like kiln built with refractory materials, thermal insulation materials and building materials, equipped with kiln cars and other vehicles. It is a modern thermal equipment for continuous firing. The function of the kiln car of the tunnel kiln is to send the materials to be fired into the tunnel kiln, and after preheating and continuous high-temperature sintering, they are transported out of the kiln through the cooling section.

[0003] In order to realize the controllable operation of the kiln car in the tunnel kiln, a driving device needs to be set. In the prior art, the technical solution disclosed in the Chinese patent "Kiln Car Driving Device for Heating Furnace" with application number CN202222805637.0 adopts a motor reducer driving a cogwheel to drive the pin rack and roller on the kiln car to move. Although this technical solution can realize the controllable operation of the kiln car in the tunnel kiln, the kiln car is generally heavy and has a large inertia, and the cogwheel and the pin rack, the pin rack and the roller are tightly engaged without movement space. Therefore, when braking, the kiln car may continue to move a distance due to inertia, thereby causing the cogwheel to reversely drive the motor reducer to rotate, which may cause the motor reducer to be damaged. Therefore, it is necessary to carry out technical transformation of the driving device, kiln car and tunnel kiln. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a driving device, a kiln car and a tunnel kiln.

[0005] In order to solve the above technical problems, the present invention discloses a driving device, comprising a plurality of groups of gears arranged at intervals along the running direction, the gears are covered with chains meshing with the gears, and a plurality of driving members are fixed at intervals on the chains; and also comprises a block fixed on the kiln car and cooperating with the driving member to drive the kiln car to run; The driving member and the stopper can be located on the same horizontal straight line, and the driving member can push the stopper to move along the running direction in the process of following the movement of the chain.

[0006] As a further improvement of the above technical solution: The driving member includes a connecting block fixed on the chain, and a curved arm for pushing the block is hinged on the connecting block. The curved arm is bent toward the front side of the running direction, and its movable end is supported by a spring. One end of the spring is hinged to the connecting block, and the other end is hinged to the curved arm.

[0007] The driving member also includes a stop block arranged on the connecting block and used for limiting the bending arm from turning over toward the rear side of the running direction.

[0008] The stopper is formed with an engaging groove adapted to the movable end of the bending arm on the rear side facing the running direction.

[0009] The stopper forms an arc chamfer toward the front side of the running direction.

[0010] The driving members and the stoppers are evenly distributed, and the spacing between adjacent driving members is the same as the spacing between adjacent stoppers.

[0011] Also disclosed is a kiln car, which is driven to move by the driving device; and blocks are arranged at intervals on the bottom of the kiln car along the running direction.

[0012] As a further improvement of the above technical solution: A "∏"-shaped sealing knife is provided at one end of the kiln car along the running direction, and a "∏"-shaped sealing groove adapted thereto is provided at the other end; the sealing knife comprises a pair of sand sealing knives arranged vertically and arranged on both sides of the kiln car for blocking the horizontal flow of gas, and a horizontal sealing knife arranged horizontally and connecting the two sand sealing knives for blocking the vertical flow of gas, and the horizontal sealing knife spans the connecting gap between the front and rear kiln workshops.

[0013] A convex strip is arranged at one end of the kiln car along the running direction, and a groove matching the convex strip is arranged at the other end thereof. The convex strip spans the connecting gap between the front and rear kiln workshops to prevent the vertical flow of gas.

[0014] Also disclosed is a tunnel kiln, comprising a kiln body, the kiln car and the driving device; a pit for accommodating gears and chains is formed at the bottom of the kiln body, and a driving member on the upper chain protrudes from the pit.

[0015] Compared with the prior art, the advantages of the present invention are: The gear is connected to the external motor. When driven by the motor, the gear rotates. Synchronously, the chain meshing with the gear rotates along with it. Since a driving member is installed on the chain and a block is installed on the kiln car, when the driving member moves to abut against the block, the driving member continues to move and pushes the block to follow the movement. Since the block is fixed on the kiln car, the kiln car is driven to move accordingly. When braking, the external motor stops rotating, and accordingly, the gear, chain and driving member stop. At this time, the kiln car continues to move a distance under the action of inertia. This distance is less than the spacing between two adjacent driving members. Therefore, the block will be separated from the driving member that abuts against it when following the movement of the kiln car, but will not be connected with the next driving member before it stops. Therefore, the kiln car moving due to inertia will not reversely drive the external motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the coordination between the driving device and the kiln car; Figure 2It is the status indication of the drive device Figure 1 ; Figure 3 It is the status indication of the drive device Figure 2 ; Figure 4 This is the structure of the kiln car Figure 1 ; Figure 5 This is the structure of the kiln car Figure 2 ; Figure 6 This is a schematic diagram of the structure of a tunnel kiln (the chain part is omitted).

[0017] The numbers in the figure represent: 1. driving device; 11. gear; 12. chain; 13. driving member; 131. connecting block; 132. bending arm; 133. spring; 134. stop block; 14. stop block; 141. fitting groove; 142. chamfer; 2. kiln car; 21. sealing knife; 211. sand sealing knife; 212. horizontal sealing knife; 22. sealing groove; 23. convex strip; 24. groove; 3. tunnel kiln; 31. kiln body; 32. pit. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example like Figures 1 to 6 As shown, the driving device 1 of this embodiment includes a plurality of groups of gears 11 arranged at intervals along the running direction, the gears 11 are provided with chains 12 meshing therewith, and a plurality of driving members 13 are fixed at intervals on the chain 12; it also includes a stopper 14 fixed on the kiln car 2 and cooperating with the driving member 13 to push the kiln car 2 to run; the driving member 13 and the stopper 14 can be located on the same horizontal straight line, and the driving member 13 can push the stopper 14 to move along the running direction in the process of following the chain 12 to move.

[0020] The gear 11 is connected to the external motor. When driven by the motor, the gear 11 rotates. Synchronously, the chain 12 meshing with the gear 11 rotates along with it. Since the chain 12 is equipped with a driving member 13 and the kiln car 2 is equipped with a stopper 14, when the driving member 13 moves to abut against the stopper 14, the driving member 13 continues to move and pushes the stopper 14 to follow the movement. Since the stopper 14 is fixed on the kiln car 2, the kiln car 2 is driven to move accordingly. When braking, the external motor stops rotating, and accordingly, the gear 11, the chain 12 and the driving member 13 stop. At this time, the kiln car 2 continues to move a distance under the action of inertia. The distance is less than the spacing between two adjacent driving members 13. Therefore, the stopper 14 will be separated from the driving member 13 that abuts against it when following the kiln car 2, but will not be connected with the next driving member 13 before it stops. Therefore, the kiln car 2 moving due to inertia will not reversely drive the external motor.

[0021] In this embodiment, the driving member 13 includes a connecting block 131 fixed on the chain 12, and a curved arm 132 is hinged on the connecting block 131 for pushing the stopper 14. The curved arm 132 is bent toward the front side of the running direction, and its movable end is supported by a spring 133. One end of the spring 133 is hinged to the connecting block 131, and the other end is hinged to the curved arm 132. The stopper 14 is formed with an engaging groove 141 adapted to the movable end of the curved arm 132 toward the rear side of the running direction. The stopper 14 is formed with an arc chamfer 142 toward the front side of the running direction. In general, the cooperation between the curved arm 132 and the stopper 14 is as follows: Figure 2 As shown, the bent arm 132 pushes the stopper 14 forward from the rear. Figure 3 As shown, when the bent arm 132 is pushed forward, the spring 133 can be compressed, causing the bent arm 132 to flip clockwise, thereby avoiding passive driving of the external motor due to pushing.

[0022] In this embodiment, the driving member 13 further includes a stopper 134 disposed on the connecting block 131 for limiting the bending arm 132 from turning over toward the rear side of the running direction. By providing the stopper 134, it is possible to prevent the bending arm 132 from turning over toward the rear side of the running direction (turning counterclockwise) after exceeding the tension limit of the spring 133, thereby preventing the stopper 14 from being effectively pushed.

[0023] In this embodiment, the driving members 13 and the stoppers 14 are evenly spaced, and the spacing between adjacent driving members 13 is the same as the spacing between adjacent stoppers 14. By providing driving members 13 and stoppers 14 that are evenly spaced and have equal spacing, a plurality of driving members 13 and stoppers 14 can abut against each other at each drive, thereby making the force distribution more uniform.

[0024] The kiln car 2 of this embodiment is driven to move by the driving device 1 mentioned above; the bottom of the kiln car 2 is provided with blocks 14 at intervals along the running direction. A "∏"-shaped sealing knife 21 is provided at one end of the kiln car 2 along the running direction, and a "∏"-shaped sealing groove 22 adapted thereto is provided at the other end; the sealing knife 21 includes a pair of sand sealing knives 211 arranged vertically and arranged on both sides of the kiln car 2 to block the horizontal flow of gas, and a horizontal sealing knife 212 arranged horizontally and connecting the two sand sealing knives 211 to block the vertical flow of gas, and the horizontal sealing knife 212 spans the connection gap between the front and rear kiln cars 2. A convex strip 23 is provided at one end of the kiln car 2 along the running direction, and a groove 24 adapted thereto is provided at the other end, and the convex strip 23 spans the connection gap between the front and rear kiln cars 2 to block the vertical flow of gas. In order to ensure the sealing performance of the connection between multiple kiln cars 2, mutually matching convex strips 23 and grooves 24 are respectively provided at both ends of the kiln car 2. By plugging the convex strips 23 and grooves 24 of the front and rear kiln cars 2, the sealed connection between the kiln cars 2 is achieved. At this time, the gas on the upper and lower sides of the kiln car 2 is difficult to circulate, so the heat energy above the kiln car 2 can be reduced to a certain extent. Loss from the bottom. In order to further enhance the sealing effect, a sealing knife 21 and a sealing groove 22 are provided below the convex strips 23 and the grooves 24. The structure of the sealing knife 21 is set as an embedded head structure with a narrow front and a wide rear for easy sealing connection. By inserting the embedded head structure into the sealing groove 22, a sealed connection can be achieved. At the same time, by providing a sand sealing knife 211, its lower end can be inserted into the external sand sealing groove, thereby achieving sand sealing. Through the above structure, gas leakage from the bottom of the kiln car 2 can be effectively prevented, thereby ensuring the effect of the sintering process and the product quality, and also improving the kiln production efficiency and practicality.

[0025] The tunnel kiln 3 of this embodiment comprises a kiln body 31, the kiln car 2, and the driving device 1; a pit 32 for accommodating the gear 11 and the chain 12 is formed at the bottom of the kiln body 31, and the driving member 13 located on the upper chain 12 protrudes from the pit 32. The pit 32 provides space for the installation of the gear 11 and the chain 12, and at the same time, because the driving member 13 located on the upper chain 12 protrudes from the pit 32, it will not affect the cooperation with the stopper 14.

[0026] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A driving device (1), characterized in that: It comprises a plurality of groups of gears (11) arranged at intervals along the running direction, the gears (11) being provided with chains (12) meshing therewith, and the chains (12) being fixed with a plurality of driving members (13) at intervals; and it also comprises a stopper (14) fixed on the kiln car (2) and cooperating with the driving members (13) to drive the kiln car (2) to run; The driving member (13) and the stopper (14) can be located on the same horizontal straight line, and the driving member (13) can push the stopper (14) to move along the running direction in the process of following the movement of the chain (12).

2. The driving device (1) according to claim 1, characterized in that: The driving member (13) comprises a connecting block (131) fixed on the chain (12); a bent arm (132) for pushing the stopper (14) is hingedly connected to the connecting block (131); the bent arm (132) is bent toward the front side of the running direction, and a movable end thereof is supported by a spring (133); one end of the spring (133) is hingedly connected to the connecting block (131), and the other end thereof is hingedly connected to the bent arm (132).

3. The driving device (1) according to claim 2, characterized in that: The driving member (13) further comprises a stop block (134) arranged on the connecting block (131) and used for limiting the bending arm (132) from turning over to the rear side in the running direction.

4. The driving device (1) according to claim 1, characterized in that: The stopper (14) is formed with an engaging groove (141) on the rear side facing the running direction and adapted to fit the movable end of the bent arm (132).

5. The driving device (1) according to claim 1, characterized in that: The stopper (14) forms an arc-shaped chamfer (142) on the front side facing the running direction.

6. The driving device (1) according to claim 1, characterized in that: The driving members (13) and the stoppers (14) are evenly spaced, and the spacing between adjacent driving members (13) is the same as the spacing between adjacent stoppers (14).

7. A kiln car (2), characterized in that: The kiln car (2) is driven to move by the driving device (1) according to any one of claims 1 to 6; and blocks (14) are arranged at intervals at the bottom of the kiln car (2) along the running direction.

8. The kiln car (2) according to claim 7, characterized in that: A "∏"-shaped sealing knife (21) is provided at one end of the kiln car (2) along the running direction, and a "∏"-shaped sealing groove (22) adapted thereto is provided at the other end; the sealing knife (21) comprises a pair of sand sealing knives (211) arranged vertically and arranged on both sides of the kiln car (2) for blocking the lateral flow of gas, and a horizontal sealing knife (212) arranged horizontally and connecting the two sand sealing knives (211) for blocking the vertical flow of gas, and the horizontal sealing knife (212) spans the connection gap between the front and rear kiln cars (2).

9. The kiln car (2) according to claim 8, characterized in that: A convex strip (23) is provided at one end of the kiln car (2) along the running direction, and a groove (24) adapted thereto is provided at the other end thereof, wherein the convex strip (23) spans the connection gap between the front and rear kiln cars (2) to prevent the vertical flow of gas.

10. A tunnel kiln (3), characterized in that: It comprises a kiln body (31), a kiln car (2) as claimed in any one of claims 7 to 9, and a driving device (1) as claimed in any one of claims 1 to 6; a pit (32) for accommodating a gear (11) and a chain (12) is formed at the bottom of the kiln body (31), and a driving member (13) located on the upper chain (12) protrudes from the pit (32).

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