Exhaust brake valve with dustproof shield

Abstract

The exhaust brake valve with the dustproof shield comprises a supporting plate, the outer surface of the supporting plate is connected with an air cylinder in a rotating mode, a threaded fork is arranged on the outer side of the air cylinder, the inner wall of the air cylinder is connected with two first installation rings in a sliding mode, and the inner wall of the threaded fork is connected with two second installation rings in a sliding mode. The front faces of the two first mounting rings are jointly and fixedly connected with a dustproof protective cover, the back face of each second mounting ring is fixedly connected with the front face of the dustproof protective cover, and the outer surface of each second mounting ring is fixedly connected with two connecting blocks. When a worker pulls the pull rod, the pull rod can drive the limiting ring to move, and the limiting ring moves to insert the connecting column on the limiting ring into the first mounting ring, so that the first mounting ring and the air cylinder can be connected in series, and meanwhile, the pull rod can enter the limiting barrel through the gap; and the pull rod and the limiting cylinder are fixed together through the fixing cylinder, so that the first mounting ring can be limited and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust brake valves, in particular to an exhaust brake valve with a dustproof protective cover. Background Art

[0002] The exhaust brake valve is an auxiliary brake, usually installed between the exhaust pipe and the muffler of the car. Its main function is to reduce or stabilize the vehicle speed when the service brake is not used or used less, but it cannot stop the vehicle in an emergency. The exhaust brake valve uses the engine as an air compressor to generate braking torque, thereby decelerating the car.

[0003] The utility model with the existing authorization announcement number CN207513692U discloses an exhaust brake valve, including a cylinder, one end of which is provided with an intake channel, and the other end is provided with a cylinder cover, a piston is provided in the inner cavity on one side of the intake channel, a push rod is provided on one side of the cylinder cover, and an exhaust back pressure regulating device is provided between the piston and the push rod.

[0004] Although the above-mentioned technical scheme is adopted to set the pressure value of the pre-stress spring by adjusting the length of the adjusting bolt, so as to realize the pre-set control of the exhaust gas pressure of different engines, thereby achieving a relatively stable braking purpose during the reaction process of the engine exhaust gas on the piston, which can not only further improve the working efficiency of the exhaust brake valve, but also further improve the durability working requirements of the exhaust brake valve. However, during the use of the exhaust brake valve, some dust is easily introduced between the piston rod and the cylinder when the piston rod and the cylinder move back and forth. The dust entering the cylinder will greatly increase the failure probability of the brake valve and affect the normal use of the brake valve, thereby resulting in the problem of low practicality. Therefore, technical personnel in this field provide an exhaust brake valve with a dust cover to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0005] In view of this, it is necessary to provide an exhaust brake valve with a dustproof shield to solve the problem that dust easily enters when the piston rod and the cylinder move back and forth.

[0006] According to one aspect of the utility model, an exhaust brake valve with a dustproof shield is provided, comprising: a support plate, the outer surface of the support plate is rotatably connected to a cylinder, a threaded fork is arranged on the outer side of the cylinder, two first mounting rings are slidably connected to the inner wall of the cylinder, two second mounting rings are slidably connected to the inner wall of the threaded fork, the front sides of the two first mounting rings are commonly fixedly connected to a dustproof shield, the back side of each of the second mounting rings is fixedly connected to the front side of the dustproof shield, the outer surface of each of the second mounting rings is fixedly connected to two connecting blocks, the inner wall of each group of the connecting blocks is threadedly connected to a threaded pin, the inner wall of each of the first mounting rings is slidably connected to a limiting ring, the outer surface of each limiting ring is slidably connected to the inner wall of the cylinder, the outer surface of each of the first mounting rings is fixedly connected to a pull rod, the outer surface of each pull rod is slidably connected to the inner wall of the cylinder, the outer surface of the cylinder is fixedly connected to two limiting cylinders, the inner wall of each limiting cylinder is threadedly connected to a fixing cylinder, and the inner wall of each fixing cylinder is rotatably connected to the outer surface of the pull rod.

[0007] According to some embodiments, four bolts are threadedly connected to the inner wall of the support plate, and the bottom end of each of the bolts penetrates the support plate and extends to the bottom of the support plate.

[0008] According to some embodiments, a first nut is threadedly connected to an outer surface of the support plate, and a right side surface of the first nut contacts a left side surface of the cylinder.

[0009] According to some embodiments, the inner wall of the support plate is rotatably connected to a valve shaft, the outer surface of the valve shaft is rotatably connected to a valve body, and the left side surface of the valve body is in contact with the right side surface of the support plate.

[0010] According to some embodiments, the inner wall of the valve body is threadedly connected with four threaded wires, the left end of each threaded wire penetrates the valve body and extends to the inside of the support plate, and the outer surface of each threaded wire is threadedly connected to the inner wall of the support plate.

[0011] According to some embodiments, a rocker arm is rotatably connected to the outer surface of the valve shaft, and the outer surface of the rocker arm is rotatably connected to the inner wall of the threaded fork.

[0012] According to some embodiments, a second nut is disposed on the outer side of the rocker arm, a right side surface of the second nut contacts a left side surface of the rocker arm, and an inner wall of the second nut is threadedly connected to an outer surface of the valve shaft.

[0013] According to some embodiments, the inner wall of the threaded fork is threadedly connected with a piston, and the outer surface of the piston is slidably connected to the inner wall of the cylinder.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By providing a first mounting ring, a limiting ring, a limiting cylinder, a pull rod and a fixing cylinder, under the action of the pull rod, when the staff pulls the pull rod, the pull rod can drive the limiting ring to move, and the movement of the limiting ring can insert the connecting column on the limiting ring into the first mounting ring, so that the first mounting ring and the cylinder can be connected in series, and at the same time the pull rod can enter the limiting cylinder through the gap, and fix the pull rod and the limiting cylinder together through the fixing cylinder, so that the first mounting ring can be limited and fixed, and by providing a second mounting ring, a connecting block and a threaded pin, under the action of the threaded pin, when the second mounting ring is sleeved on the threaded fork, the two second mounting rings can be firmly fixed on the threaded fork through the threaded pin, and under the action of the first mounting ring and the second mounting ring, the protective cover can be firmly mounted on the device, effectively improving the dustproof effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a support plate of an exhaust brake valve with a dustproof shield provided by the utility model;

[0018] Figure 2 A right-view stereoscopic structural diagram of a support plate of an exhaust brake valve with a dustproof shield provided by the utility model;

[0019] Figure 3 A schematic diagram of a sectional three-dimensional structure of a cylinder of an exhaust brake valve with a dustproof shield provided by the utility model;

[0020] Figure 4 A schematic diagram of the three-dimensional structure of a pull rod of an exhaust brake valve with a dustproof shield provided by the utility model;

[0021] Figure 5 The utility model is a schematic diagram of a three-dimensional structure of a threaded pin of an exhaust brake valve with a dustproof protective cover.

[0022] In the figure: 1. support plate; 2. cylinder; 3. valve shaft; 4. valve body; 5. rocker arm; 6. first nut; 7. second nut; 8. bolt; 9. threaded fork; 10. threaded wire; 11. first mounting ring; 12. piston; 13. second mounting ring; 14. dust cover; 15. limit ring; 16. limit cylinder; 17. pull rod; 18. fixing cylinder; 19. connecting block; 20. threaded pin. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] See also Figures 1 to 5 The utility model provides an exhaust brake valve with a dustproof shield, comprising a support plate 1, the outer surface of the support plate 1 is rotatably connected to a cylinder 2, a threaded fork 9 is arranged on the outer side of the cylinder 2, two first mounting rings 11 are slidably connected to the inner wall of the cylinder 2, two second mounting rings 13 are slidably connected to the inner wall of the threaded fork 9, the front sides of the two first mounting rings 11 are commonly fixedly connected to a dustproof shield 14, the back side of each second mounting ring 13 is fixedly connected to the front side of the dustproof shield 14, and the outer surface of each second mounting ring 13 is fixedly connected to two connecting blocks 19, The inner wall of each group of connecting blocks 19 is threadedly connected with a threaded pin 20, the inner wall of each first mounting ring 11 is slidably connected with a limiting ring 15, the outer surface of each limiting ring 15 is slidably connected to the inner wall of the cylinder 2, the outer surface of each first mounting ring 11 is fixedly connected with a pull rod 17, the outer surface of each pull rod 17 is slidably connected to the inner wall of the cylinder 2, the outer surface of the cylinder 2 is fixedly connected with two limiting cylinders 16, the inner wall of each limiting cylinder 16 is threadedly connected with a fixing cylinder 18, and the inner wall of each fixing cylinder 18 is rotatably connected to the outer surface of the pull rod 17.

[0025] By providing the dustproof cover 14, the dustproof effect of the device can be further improved, and dust can be prevented from entering the cylinder 2 and causing an impact during use.

[0026] Furthermore, the inner wall of the support plate 1 is threadedly connected with four bolts 8, and the bottom end of each bolt 8 passes through the support plate 1 and extends to the bottom of the support plate 1. By setting the bolts 8, the device can be conveniently fixed in a suitable position so as to work stably.

[0027] Furthermore, a first nut 6 is threadedly connected to the outer surface of the support plate 1, and the right side of the first nut 6 contacts the left side of the cylinder 2. By setting the first nut 6, one end of the cylinder 2 can be limited to avoid position displacement during use.

[0028] Furthermore, the inner wall of the support plate 1 is rotatably connected to the valve shaft 3, and the outer surface of the valve shaft 3 is rotatably connected to the valve body 4. The left side of the valve body 4 is in contact with the right side of the support plate 1. By setting the valve shaft 3 and the valve body 4, the valve shaft 3 can conveniently drive the valve inside the valve body 4 to open and close, thereby achieving the function of exhaust braking.

[0029] Furthermore, the inner wall of the valve body 4 is threadedly connected with four threaded wires 10, the left end of each threaded wire 10 penetrates the valve body 4 and extends to the interior of the support plate 1, and the outer surface of each threaded wire 10 is threadedly connected to the inner wall of the support plate 1. By setting the threaded wires 10, the valve body 4 can be firmly fixed on the support plate 1, so that it can be stably used for operation.

[0030] Furthermore, the outer surface of the valve shaft 3 is rotatably connected to a rocker arm 5, and the outer surface of the rocker arm 5 is rotatably connected to the inner wall of the threaded fork 9. By providing the rocker arm 5, the cylinder 2 and the valve shaft 3 can be connected, thereby facilitating the cylinder 2 to push the valve shaft 3 to rotate.

[0031] Furthermore, a second nut 7 is provided on the outer side of the rocker arm 5, the right side surface of the second nut 7 is in contact with the left side surface of the rocker arm 5, and the inner wall of the second nut 7 is threadedly connected to the outer surface of the valve shaft 3. By providing the second nut 7, the other end of the cylinder 2 can be limited so that it can be used stably, and it is also convenient for disassembly of the cylinder 2.

[0032] Furthermore, the inner wall of the threaded fork 9 is threadedly connected to a piston 12, and the outer surface of the piston 12 is slidably connected to the inner wall of the cylinder 2. By setting the piston 12, the piston 12 can be pushed to move when the cylinder 2 is inflated, thereby driving a series of linkage components to work.

[0033] Working principle: When in use, the staff first transports the device to a suitable position for use, and then fixes the device firmly with four bolts 8, and then screws the first nut 6 and the second nut 7 to enable it to move outward and be removed, then removes the cylinder 2, and puts the first mounting ring 11 and the second mounting ring 13 on the cylinder 2, and again fixes the cylinder 2 firmly with the first nut 6 and the second nut 7. Since the dust cover 14 is made of rubber material with high elasticity, the staff pulls the two first mounting rings 11 outward so that they can be put in the groove of the cylinder 2, and uses the same method to put the second mounting ring 13 on the threaded fork 9, and then uses two threaded pins 20 to fasten the two second mounting rings 13. The extrusion fixation is firm to avoid separation during use. Then the staff manually pulls the pull rod 17. When the staff pulls the pull rod 17, the pull rod 17 can drive the limit ring 15 to move. The movement of the limit ring 15 can insert the connecting column on the limit ring 15 into the first mounting ring 11, so that the first mounting ring 11 and the cylinder 2 can be connected in series. At the same time, the pull rod 17 can enter the limit tube 16 through the gap, and the pull rod 17 and the limit tube 16 are fixed together through the fixing tube 18, so that the first mounting ring 11 can be limited and fixed. Under the action of the first mounting ring 11 and the second mounting ring 13, the protective cover can be firmly installed on the device, which effectively improves the dustproof effect of the device.

[0034] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it 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 direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

Claims

1. An exhaust brake valve with a dust cover, characterized in that: The invention comprises a support plate (1), the outer surface of the support plate (1) is rotatably connected to a cylinder (2), the outer side of the cylinder (2) is provided with a threaded fork (9), the inner wall of the cylinder (2) is slidably connected to two first mounting rings (11), the inner wall of the threaded fork (9) is slidably connected to two second mounting rings (13), the front sides of the two first mounting rings (11) are commonly fixedly connected to a dust cover (14), the back side of each second mounting ring (13) is fixedly connected to the front side of the dust cover (14), the outer surface of each second mounting ring (13) is fixedly connected to two connecting blocks (19), and the inner side of each group of the connecting blocks (19) is fixedly connected to the outer surface of the two first mounting rings (11). The wall is threadedly connected with a threaded pin (20), the inner wall of each of the first mounting rings (11) is slidably connected to a limiting ring (15), the outer surface of each of the limiting rings (15) is slidably connected to the inner wall of the cylinder (2), the outer surface of each of the first mounting rings (11) is fixedly connected with a pull rod (17), the outer surface of each of the pull rods (17) is slidably connected to the inner wall of the cylinder (2), the outer surface of the cylinder (2) is fixedly connected with two limiting cylinders (16), the inner wall of each of the limiting cylinders (16) is threadedly connected with a fixing cylinder (18), and the inner wall of each of the fixing cylinders (18) is rotatably connected to the outer surface of the pull rod (17).

2. An exhaust brake valve with a dust cover according to claim 1, characterized in that: Four bolts (8) are threadedly connected to the inner wall of the support plate (1), and the bottom end of each of the bolts (8) penetrates the support plate (1) and extends to the bottom of the support plate (1).

3. The exhaust brake valve with a dust cover according to claim 1, characterized in that: The outer surface of the support plate (1) is threadedly connected with a first nut (6), and the right side surface of the first nut (6) is in contact with the left side surface of the cylinder (2).

4. The exhaust brake valve with a dust cover according to claim 1, characterized in that: The inner wall of the support plate (1) is rotatably connected to a valve shaft (3), the outer surface of the valve shaft (3) is rotatably connected to a valve body (4), and the left side surface of the valve body (4) is in contact with the right side surface of the support plate (1).

5. The exhaust brake valve with a dust cover according to claim 4, characterized in that: The inner wall of the valve body (4) is threadedly connected with four threaded wires (10), the left end of each of the threaded wires (10) passes through the valve body (4) and extends to the inside of the support plate (1), and the outer surface of each of the threaded wires (10) is threadedly connected to the inner wall of the support plate (1).

6. The exhaust brake valve with a dust cover according to claim 4, characterized in that: The outer surface of the valve shaft (3) is rotatably connected to a rocker arm (5), and the outer surface of the rocker arm (5) is rotatably connected to the inner wall of the threaded fork (9).

7. An exhaust brake valve with a dust cover according to claim 6, characterized in that: A second nut (7) is arranged on the outer side of the rocker arm (5), the right side surface of the second nut (7) is in contact with the left side surface of the rocker arm (5), and the inner wall of the second nut (7) is threadedly connected to the outer surface of the valve shaft (3).

8. The exhaust brake valve with a dust cover according to claim 1, characterized in that: The inner wall of the threaded fork (9) is threadedly connected to a piston (12), and the outer surface of the piston (12) is slidably connected to the inner wall of the cylinder (2).

Images