Exhaust brake valve

Abstract

The utility model relates to the technical field of brake valves, in particular to an exhaust brake valve which comprises an exhaust pipe body and a mounting box, the mounting box is mounted on the upper side of the exhaust pipe body, a fixing ring plate is mounted in the exhaust pipe body, an operating cylinder is mounted on the rear side in the mounting box, and locking mechanisms are arranged on the two sides of the front end of the operating cylinder. The locking mechanism comprises a driving part and gas baffles, the driving part drives the gas baffles on the bottom side to rotate, two sets of fixing frames at the bottom end of the exhaust pipe body are connected with extending blocks at the bottom end of the mounting box through bolts, and through the design, stability can be further improved, and deviation can be prevented; the two-way rack plate at the front end of the control cylinder is meshed with the two locking mechanisms for relative movement, the abrasion degree can be reduced through the design, the service life is greatly prolonged, and the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of brake valve technology, specifically an exhaust brake valve. Background Technology

[0002] The current exhaust brake valve mainly works by using compressed air in the control cylinder to drive the piston push rod, which in turn drives a rocker arm fixed to the valve plate shaft to rotate, thereby closing the brake valve plate. When the compressed air pressure in the control cylinder is released, the brake valve plate is reset under the action of engine exhaust pressure, which in turn drives the valve plate shaft to rotate, thereby driving the rocker arm to rotate and reset the piston push rod. The rear of the control cylinder is fixed to the control cylinder support plate by a movable pin. Throughout the process, the control cylinder will be subjected to a component force along the rocker arm axis as the working state changes, and will continuously deflect.

[0003] For example, an exhaust brake valve with announcement number CN208106576U includes a control cylinder, a support plate, a valve body, a control mechanism, and a cover. The control mechanism includes a first rotating shaft, a second rotating shaft, and a sliding pin. A first rocker arm is installed at one end of the first rotating shaft, and the other end of the first rotating shaft passes through the support plate and the valve body in sequence and is connected to a first valve plate. A second rocker arm is installed at one end of the second rotating shaft, and the other end of the second rotating shaft passes through the support plate and the valve body in sequence and is connected to a second valve plate. The first rocker arm is located above the second rocker arm. A first sliding groove and a second sliding groove are respectively opened on the first rocker arm and the second rocker arm. The piston push rod of the control cylinder is connected to a mounting bracket, and a mounting hole is opened on the mounting bracket. The sliding pin passes through the second sliding groove, the first sliding groove, and the mounting hole in sequence and is fixed by a cotter pin. This design not only effectively solves the problems of operating mechanism failure, piston rod wear and jamming, but also has a simple structure, easy installation, high reliability and good sealing. However, due to the long-term use of the brake valve, it is prone to vibration and displacement during operation, making maintenance difficult. In addition, the existing device has a hinged control valve, which also gradually increases the bottom clearance due to irreversible wear after long-term use, thus affecting the operation of the brake valve. Therefore, it is urgent to design an exhaust brake valve to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an exhaust brake valve to solve the problems mentioned in the background art, such as vibration and displacement during operation due to prolonged use of the brake valve, which makes maintenance difficult, and the existing device control valve is hinged, which also causes irreversible wear after long-term use, resulting in a gradual increase in the bottom clearance and affecting the operation of the brake valve.

[0005] To achieve the above objectives, the present invention provides the following technical solution: it includes an exhaust pipe body and an installation box. The installation box is installed on the upper side of the exhaust pipe body. A fixing ring plate is installed inside the exhaust pipe body. A control cylinder is installed on the rear side inside the installation box. Locking mechanisms are provided on both sides of the front end of the control cylinder. The locking mechanism includes a driving component and a baffle plate. The driving component drives the bottom baffle plate to rotate.

[0006] Preferably, two sets of fixing brackets are fixed at the top of the exhaust pipe body, and the center of the fixing ring plate is staggered with the two sets of baffle plates.

[0007] Preferably, extension blocks are fixed on both sides of the bottom end of the mounting box, and the extension blocks are fitted to the side of the fixing frame. The center of the extension block is fixed to the inner wall of the fixing frame by bolt threads.

[0008] Preferably, a bidirectional rack plate is fixedly provided at the front end of the control cylinder, and the bidirectional rack plate engages with the driving members on both sides to perform relative movement.

[0009] Preferably, the drive component includes an upper fixed bearing and an upper rotating shaft. The upper fixed bearing passes through the mounting box and the inner wall of the exhaust pipe body. The upper rotating shaft is mounted at the center of the upper fixed bearing. A gear is fixed on the upper side of the upper rotating shaft. The top end of the upper rotating shaft is inserted into the bottom side of the cross plate. The gear meshes with the inner bidirectional rack plate. The bottom end of the upper rotating shaft is fixed to the top end of the baffle plate. A lower rotating shaft is fixed at the bottom end of the baffle plate. The bottom side of the lower rotating shaft is inserted into the interior of the lower fixed bearing. The lower fixed bearing is installed on the inner bottom side of the exhaust pipe body.

[0010] Preferably, the air baffle includes a semi-circular plate, a front sealing plate, and a rear sealing plate. The front sealing plate is fixed to the inner wall of the front end of the semi-circular plate, and the rear sealing plate is fixed to the inner wall of the rear end of the semi-circular plate. The two sets of front sealing plates and the two sets of rear sealing plates are in mirror contact.

[0011] Preferably, the semicircular plate has a through opening inside, and a conical block is fixed inside the through opening, with the sharp end of the conical block facing inward.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This exhaust brake valve connects the two sets of fixing brackets at the bottom of the exhaust pipe body to the extension block at the bottom of the mounting box via bolts. This design further improves stability and prevents deviation. The two sets of locking mechanisms are engaged by the bidirectional rack plate at the front end of the control cylinder to achieve relative movement. This design reduces wear, greatly increases service life, and reduces production costs.

[0014] This exhaust brake valve uses a semi-circular plate connected by an upper and lower rotating shaft to rotate and close the exhaust pipe body. The relative motion saves time and power, thereby improving stability. The through-hole inside the semi-circular plate facilitates the flow of internal gas without affecting the gas flow during normal use. Attached Figure Description

[0015] Figure 1 This is a frontal sectional view of the present invention;

[0016] Figure 2 This is a side sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the mounting box of this utility model;

[0018] Figure 4 This is an enlarged schematic diagram of the locking mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the locking mechanism of this utility model.

[0020] In the diagram: 1. Exhaust pipe body; 11. Fixed ring plate; 12. Fixed bracket; 2. Mounting box; 21. Extension block; 22. Bolt; 3. Control cylinder; 31. Double-sided rack plate; 4. Locking mechanism; 41. Drive component; 411. Upper fixed bearing; 412. Upper rotating shaft; 413. Horizontal plate; 414. Gear; 415. Lower fixed bearing; 416. Lower rotating shaft; 42. Air baffle plate; 421. Semicircular plate; 4211. Through port; 4212. Conical block; 422. Front sealing plate; 423. Rear sealing plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 One embodiment provided by this utility model:

[0023] An exhaust brake valve is disclosed in this application. The control cylinder 3 used in this application is a product that can be directly purchased on the market. Its principle and connection method are existing technologies known to those skilled in the art. It includes an exhaust pipe body 1 and a mounting box 2. The mounting box 2 is installed on the upper side of the exhaust pipe body 1. A fixing ring plate 11 is installed inside the exhaust pipe body 1. The control cylinder 3 is installed on the rear side inside the mounting box 2. Locking mechanisms 4 are provided on both sides of the front end of the control cylinder 3. The locking mechanism 4 includes a driving member 41 and an air baffle plate 42. The driving member 41 drives the bottom air baffle plate 42 to rotate.

[0024] As a further feature of this invention, two sets of fixing brackets 12 are fixed to the top of the exhaust pipe body 1, and the center of the fixing ring plate 11 is staggered with the two sets of air baffles 42 to facilitate the normal operation of the brake valve.

[0025] Furthermore, extension blocks 21 are fixed on both sides of the bottom end of the mounting box 2. The extension blocks 21 are attached to the sides of the fixing frame 12. The center of the extension block 21 is fixed to the inner wall of the fixing frame 12 by bolts 22, which facilitates installation and improves the stability of use.

[0026] Furthermore, a bidirectional rack plate 31 is fixedly provided at the front end of the control cylinder 3. The bidirectional rack plate 31 meshes with the driving components 41 on both sides to perform relative movement. The driving component 41 includes an upper fixed bearing 411 and an upper rotating shaft 412. The upper fixed bearing 411 passes through the inner wall of the mounting box 2 and the exhaust pipe body 1. The upper rotating shaft 412 is installed at the center of the upper fixed bearing 411. A gear 414 is fixedly provided on the upper side of the upper rotating shaft 412. The top end of the upper rotating shaft 412 is inserted into the bottom side of the horizontal plate 413. The gear 414 meshes with the inner bidirectional rack plate 31. The bottom end of the upper rotating shaft 412 is fixedly provided on the top end of the baffle plate 42. A lower rotating shaft 416 is fixedly provided at the bottom end of the baffle plate 42. The bottom side of the lower rotating shaft 416 is inserted into the interior of the lower fixed bearing 415. The lower fixed bearing 415 is installed on the inner bottom side of the exhaust pipe body 1. The two sets of driving components can be driven to perform relative movement through the control valve, thereby improving the stability and service life of the device.

[0027] As a further improvement of this utility model, the air baffle 42 includes a semi-circular plate 421, a front sealing plate 422, and a rear sealing plate 423. The front sealing plate 422 is fixedly installed on the inner wall of the front end of the semi-circular plate 421, and the rear sealing plate 423 is fixedly installed on the inner wall of the rear end of the semi-circular plate 421. The two sets of front sealing plates 422 and the two sets of rear sealing plates 423 are in mirror contact. A through-hole 4211 is opened inside the semi-circular plate 421, and a conical block 4212 is fixedly installed inside the through-hole 4211. The sharp end of the conical block 4212 faces inward, which can efficiently brake the engine and improve the sealing performance.

[0028] Working principle: When the user needs to brake, the operator first activates the control cylinder 3 to drive the double-sided rack plate 31 to move to the right. When the double-sided rack plate 31 moves backward, it can mesh with the gears 414 on both sides and rotate relative to each other. When the gears 414 rotate relative to each other, they can drive the fixed upper rotating shaft 412 to rotate. The rotation of the upper rotating shaft 412 can drive the semi-circular plate 421 to rotate. The lower rotating shaft 416 fixed on the bottom side of the semi-circular plate 421 can rotate within the lower fixed bearing 415. After the two sets of semi-circular plates 421 rotate relative to each other, the two sets of front sealing plates 422 and rear sealing plates 423 fixed on the inner wall of the two sets of semi-circular plates 421 will mate to complete the seal. When braking is completed, the operator operates the control valve 3 in the opposite direction to move forward. Under the drive of the drive component 41, the two sets of semi-circular plates 421 are perpendicular to the fixed ring plate 11 inside the exhaust pipe body 1. The gas generated by the exhaust pipe body 1 can flow out through the through-hole 4211 inside the semi-circular plate 421. The above is the complete working principle of this utility model.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An exhaust brake valve, comprising an exhaust pipe body (1) and a mounting box (2), wherein the mounting box (2) is mounted on the upper side of the exhaust pipe body (1), characterized in that: The exhaust pipe body (1) is equipped with a fixed ring plate (11), and the mounting box (2) is equipped with a control cylinder (3) on the rear side. The control cylinder (3) is provided with locking mechanisms (4) on both sides of the front end. The locking mechanism (4) includes a drive member (41) and a baffle plate (42). The drive member (41) drives the bottom baffle plate (42) to rotate.

2. The exhaust brake valve according to claim 1, characterized in that: Two sets of fixing brackets (12) are fixed at the top of the exhaust pipe body (1), and the center of the fixing ring plate (11) is intersected with the two sets of baffle plates (42).

3. The exhaust brake valve according to claim 1, characterized in that: Both sides of the bottom end of the mounting box (2) are fixed with extension blocks (21), and the extension blocks (21) are attached to the side of the fixing frame (12). The center of the extension block (21) is fixed to the inner wall of the fixing frame (12) by bolts (22).

4. The exhaust brake valve according to claim 1, characterized in that: The front end of the control cylinder (3) is fixed with a two-way rack plate (31), which meshes with the driving members (41) on both sides to perform relative movement.

5. An exhaust brake valve according to claim 1, characterized in that: The drive component (41) includes an upper fixed bearing (411) and an upper rotating shaft (412). The upper fixed bearing (411) passes through the inner wall of the mounting box (2) and the exhaust pipe body (1). The upper rotating shaft (412) is installed at the center of the upper fixed bearing (411). A gear (414) is fixed on the upper side of the upper rotating shaft (412). The top end of the upper rotating shaft (412) is inserted into the bottom side of the horizontal plate (413). The gear (414) meshes with the inner double-sided rack plate (31). The bottom end of the upper rotating shaft (412) is fixed on the top end of the baffle plate (42). The bottom end of the baffle plate (42) is fixed with a lower rotating shaft (416). The bottom side of the lower rotating shaft (416) is inserted into the interior of the lower fixed bearing (415). The lower fixed bearing (415) is installed on the inner bottom side of the exhaust pipe body (1).

6. The exhaust brake valve according to claim 1, characterized in that: The air baffle (42) includes a semi-circular plate (421), a front sealing plate (422) and a rear sealing plate (423). The front sealing plate (422) is fixedly provided on the inner wall of the front end of the semi-circular plate (421), and the rear sealing plate (423) is fixedly provided on the inner wall of the rear end of the semi-circular plate (421). The two sets of front sealing plates (422) and the two sets of rear sealing plates (423) are in mirror contact.

7. An exhaust brake valve according to claim 6, characterized in that: The semicircular plate (421) has a through opening (4211) inside, and a conical block (4212) is fixed inside the through opening (4211), with the sharp end of the conical block (4212) facing inward.

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