Force takeoff implementation device independent of blast pump and vacuum pump

Abstract

The utility model provides a power take-off device independent of a blast pump and a vacuum pump, which comprises a power transmission mechanism and an engine intake manifold, the engine intake manifold is connected with one end of a first vacuum air pipe, the other end of the first vacuum air pipe is connected with one side of a vacuum tank, and the other side of the vacuum tank is connected with a vacuum pump. The other side of the vacuum tank is connected with one end of a second vacuum air pipe, the other end of the second vacuum air pipe is connected with a vacuum cylinder, and the vacuum cylinder is connected with a power transmission mechanism. According to the power take-off implementation device independent of the inflating pump and the vacuum pump, the blank of a power take-off scheme of a vehicle type without a vacuum pump and an inflating pump on the market is filled, and the possibility is provided for achieving multiple functions of the vehicle type; the power takeoff device is simple in structural arrangement, compared with an air pump and a vacuum pump, electric appliances of the whole vehicle are reduced, the power takeoff device is simpler and more convenient, and a new power takeoff technical route is provided for an oil brake type.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle technical field relates to the power takeoff, concretely relates to a kind of power takeoff implementation device not depending on air pump and vacuum pump. BACKGROUND

[0002] At present, due to the simple structure of oil brake, it is simple to arrange. Commercial vehicles use oil brake more and more, and the traditional power takeoff needs to rely on air pump, that is, high-pressure gas drives the piston to open the power takeoff. The oil brake type does not have an air pump, which makes the oil brake type unable to use the conventional power takeoff. At the same time, some models of commercial vehicles use vacuum boosters to assist drivers in pressing brake pedals, and such models have vacuum pumps that can use vacuum to use vacuum negative pressure type power takeoff.

[0003] In short, the air brake type can use the high-pressure gas generated by the air pump to open the power takeoff, and the vehicle with a vacuum pump can use the vacuum negative pressure to open the power takeoff. However, there is no good method for using the power takeoff for the oil brake type without a vacuum pump and an air pump. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model provides a power takeoff implementation device not depending on air pump and vacuum pump to solve the technical problem of power takeoff function for the vehicle without a vacuum pump and an air pump in the prior art.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A power takeoff implementation device includes a power transmission mechanism, characterized in that it further includes an engine intake manifold, the engine intake manifold is connected to one end of a first vacuum air pipe, the other end of the first vacuum air pipe is connected to one side of a vacuum tank, the other side of the vacuum tank is connected to one end of a second vacuum air pipe, the other end of the second vacuum air pipe is connected to a vacuum air cylinder, and the vacuum air cylinder is connected to the power transmission mechanism.

[0007] The utility model also has the following technical features:

[0008] The vacuum air cylinder is provided with a piston, the piston is fixedly connected to one end of a yoke shaft in the power transmission mechanism, and one end of the yoke shaft is located in the vacuum air cylinder.

[0009] One end of the yoke shaft is provided with a spring, one end of the spring is in contact with the inner wall of the vacuum air cylinder, and the other end of the spring is in contact with the piston.

[0010] A first air pressure sensor and a first air path electromagnetic valve are independently arranged in sequence on the first vacuum air pipe, the first air pressure sensor is connected to a power takeoff controller through a first wire harness, and the first air path electromagnetic valve is connected to the power takeoff controller through a second wire harness.

[0011] The shell of the vacuum tank is provided with a second air pressure sensor, and the second air pressure sensor is connected with the power take-off controller through a third wire harness.

[0012] The second vacuum air pipe is provided with a two-position three-way electromagnetic valve, and the two-position three-way electromagnetic valve is connected with the power take-off controller through a fourth wire harness.

[0013] The power transmission mechanism comprises a shift fork shaft, the other end of the shift fork shaft is connected with a sliding sleeve, the sliding sleeve is connected with an output gear, the output gear is connected with an output shaft, and the output shaft is connected with an input gear.

[0014] Compared with the prior art, the power take-off implementation device has the following beneficial technical effects:

[0015] (I) The power take-off implementation device fills the blank of the power take-off scheme of the vehicle without a vacuum pump and a gas pump, and provides the possibility for the vehicle to realize various functions.

[0016] (II) The power take-off implementation device has simple structure, compared with the gas pump and the vacuum pump, the vehicle reduces the use of electrical appliances, is more convenient, and provides a new power take-off technical route for the oil brake type. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a power take-off mode diagram without a vacuum pump and a gas pump.

[0018] The meanings of the various reference numerals in the drawing are as follows: 1 is an engine intake manifold, 2 is a first vacuum air pipe, 3 is a vacuum tank, 4 is a second vacuum air pipe, 5 is a vacuum air cylinder, 6 is a power transmission mechanism, 7 is a first air pressure sensor, 8 is a first air path electromagnetic valve, 9 is a first wire harness, 10 is a power take-off controller, 11 is a second wire harness, 12 is a second air pressure sensor, 13 is a third wire harness, 14 is a two-position three-way electromagnetic valve, and 15 is a fourth wire harness.

[0019] 501 is a piston, and 502 is a spring.

[0020] 601 is a shift fork shaft, 602 is an output gear, 603 is a sliding sleeve, 604 is an output shaft, and 605 is an input gear.

[0021] The specific content of the utility model is further explained and described in detail in combination with the embodiments. DETAILED DESCRIPTION

[0022] It should be noted that all the devices and components in the utility model, if not specially stated, all adopt the devices and components known in the prior art.

[0023] In this embodiment, the pressure in the engine intake manifold is generally 50 kPa to 70 kPa, and can reach 25 kPa to 35 kPa under partial or even full load.

[0024] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0025] Example:

[0026] This embodiment provides a power take-off device that does not rely on an air pump or a vacuum pump, including a power transmission mechanism 6, such as... Figure 1 As shown, it includes an engine intake manifold 1, which is connected to one end of a first vacuum pipe 2. The other end of the first vacuum pipe 2 is connected to one side of a vacuum tank 3. The other side of the vacuum tank 3 is connected to one end of a second vacuum pipe 4. The other end of the second vacuum pipe 4 is connected to a vacuum cylinder 5. The vacuum cylinder 5 is connected to a power transmission mechanism 6.

[0027] like Figure 1 As shown, a piston 501 is provided inside the vacuum cylinder 5. The piston 501 is fixedly connected to one end of the shift fork shaft 601 in the power transmission mechanism 6. One end of the shift fork shaft 601 is located inside the vacuum cylinder 5.

[0028] like Figure 1 As shown, a spring 502 is installed on one end of the shift fork shaft 601. One end of the spring 502 is in contact with the inner wall of the vacuum cylinder 5, and the other end of the spring 502 is in contact with the piston 501.

[0029] like Figure 1 As shown, a first air pressure sensor 7 and a first air path solenoid valve 8 are independently and sequentially installed on the first vacuum pipe 2. The first air pressure sensor 7 is connected to the power take-off controller 10 through the first wiring harness 9, and the first air path solenoid valve 8 is connected to the power take-off controller 10 through the second wiring harness 11.

[0030] like Figure 1 As shown, a second pressure sensor 12 is installed on the shell of the vacuum tank 3, and the second pressure sensor 12 is connected to the power take-off controller 10 through a third wiring harness 13.

[0031] like Figure 1 As shown, a two-position three-way solenoid valve 14 is installed on the second vacuum pipe 4. The two-position three-way solenoid valve 14 is connected to the power take-off controller 10 through the fourth wiring harness 15.

[0032] In this embodiment, the power transmission mechanism 6 adopts a commonly used power transmission mechanism known in the art. Preferably, such as Figure 1As shown, the power transmission mechanism 6 includes a shift fork 601, the other end of the shift fork shaft 601 is connected with a sleeve 603, the sleeve 603 is connected with an output gear 602, the output gear 602 is connected with an output shaft 604, and the output shaft 604 is connected with an input gear 605.

[0033] In this embodiment, the first air pressure sensor 7 is arranged between the engine intake manifold 1 and the first air path electromagnetic valve 8, and is used to detect the air pressure on one side of the first air path electromagnetic valve 8; the first air path electromagnetic valve 8 is arranged on the first vacuum air pipe 2 between the first air pressure sensor 7 and the vacuum tank 3, and is used to control the opening and closing of the air path; and the vacuum tank 3 is a vacuum energy storage device.

[0034] In this embodiment, the power take-off controller 10 is a commonly known power take-off controller, and is the control center of the energy storage system.

[0035] In this embodiment, the second air pressure sensor 12 is used to detect the air pressure inside the vacuum tank 3.

[0036] In this embodiment, the two-position three-way electromagnetic valve 14 is used to control the opening and closing of the power take-off vacuum air path and whether it is connected to the atmospheric environment.

[0037] In this embodiment, when the pressures on both sides of the piston 501 are equal, the spring 502 pushes the power take-off to reset.

[0038] In this embodiment, during operation, the power take-off controller 10 compares the pressure difference between the first air pressure sensor 7 and the second air pressure sensor 12, when the pressure difference reaches the set range, the first air path electromagnetic valve 8 is opened, and the engine intake manifold 1 performs vacuumizing on the vacuum tank 3 through the first vacuum air pipe 2. When the pressure difference is less than the preset range, the first air path electromagnetic valve 8 is closed, and the vacuumizing is stopped. Under the action of the power take-off controller 10, the inside of the vacuum tank 3 is maintained in a negative pressure state through repeated vacuumizing.

[0039] When the power take-off controller 10 receives the power take-off opening signal, the two-position three-way electromagnetic valve 14 is opened, the left side of the piston 501 in the vacuum cylinder 5 is atmospheric pressure, and the right side is negative pressure. The atmospheric pressure pushes the piston 501 to move to the right under the action of overcoming the force of the spring, and then the shift fork shaft 601 and the sleeve 603 are actuated, so that the output shaft 604 is connected with the output gear 602, and at this time the power take-off outputs power.

[0040] When the power take-off controller 10 receives the power take-off closing signal, the two-position three-way electromagnetic valve 14 is closed, the second vacuum air pipe 4 is connected to the atmosphere through the two-position three-way electromagnetic valve 14, the air pressures on both sides of the piston 501 are equal, and the piston 501 is reset under the action of the spring 502, the shift fork shaft 601 and the sleeve 603 are reset, and the power take-off is cut off.

Claims

1. A power take-off realization device comprising a power transmission mechanism (6), characterized in that, Also include engine intake manifold (1), engine intake manifold (1) is connected with one end of the first vacuum air pipe (2), the other end of the first vacuum air pipe (2) is connected with one side of the vacuum tank (3), the other side of the vacuum tank (3) is connected with one end of the second vacuum air pipe (4), the other end of the second vacuum air pipe (4) is connected with the vacuum cylinder (5), the vacuum cylinder (5) is connected with the power transmission mechanism (6).

2. The power take-off implementing device according to claim 1, characterized in that, The vacuum cylinder (5) is provided with a piston (501), and the piston (501) is fixedly connected with one end of a yoke shaft (601) in the power transmission mechanism (6), and one end of the yoke shaft (601) is located in the vacuum cylinder (5).

3. The power take-off implementation device of claim 2, wherein, One end of the yoke shaft (601) is provided with a spring (502), one end of the spring (502) is in contact with the inner wall of the vacuum cylinder (5), and the other end of the spring (502) is in contact with the piston (501).

4. The power take-off implementation device of claim 1, wherein, The first vacuum air pipe (2) is independently provided with a first air pressure sensor (7) and a first air path electromagnetic valve (8) in sequence, the first air pressure sensor (7) is connected with the power takeoff controller (10) through a first wire harness (9), and the first air path electromagnetic valve (8) is connected with the power takeoff controller (10) through a second wire harness (11); The shell of the vacuum tank (3) is provided with a second air pressure sensor (12), and the second air pressure sensor (12) is connected with the power takeoff controller (10) through a third wire harness (13); The second vacuum air pipe (4) is provided with a two-position three-way electromagnetic valve (14), and the two-position three-way electromagnetic valve (14) is connected with the power takeoff controller (10) through a fourth wire harness (15).

5. The power take-off implementation device of claim 1, wherein, The power transmission mechanism (6) comprises a yoke shaft (601), the other end of the yoke shaft (601) is connected with a sliding sleeve (603), the sliding sleeve (603) is connected with an output gear (602), the output gear (602) is connected with an output shaft (604), and the output shaft (604) is connected with an input gear (605).

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