Lifting oil pump with microswitch

Abstract

The utility model relates to the technical field of lifting oil pumps, and discloses a lifting oil pump with a microswitch, which comprises an oil pump (1), a reversing valve body (2), a reversing handle (3) fixedly connected with the reversing valve body (2), a rotating arm (4) fixedly connected with the reversing valve body (2) and the microswitch (5), and the rotating arm (4) is in contact fit with a contact (52) of the microswitch (5). The device further comprises a bolt rod (61) which is arranged in the rotating radius of the reversing handle (3) and limits rotation of the reversing handle (3). According to the utility model, vehicle operation conditions are effectively judged, safety problems are checked, and life health of a driver is protected; an internal circuit of the vehicle can be cut off when the vehicle stops, so that only a cab can be lifted and turned over when the vehicle stops; the lifting oil pump microswitch is simple in structure, capable of being replaced repeatedly, safe, reliable and convenient to maintain in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of a lifting oil pump, in particular to a lifting oil pump with a micro switch. Background Art

[0002] With the continuous rise of the new energy industry, especially the rapid development of battery technology, higher configuration requirements are put forward for the design of commercial vehicles, which will inevitably require the further increase of various efficient, simple and reasonable functional parts and accessories, and thus the electrical function requirements of various components of the vehicle will also be higher, especially for the related components around the driving cab, so relevant requirements are also put forward for the oil pump of the commercial vehicle cab lifting system.

[0003] At present, the cab lifting oil pumps used in commercial vehicles at home and abroad only play the role of oil storage and pressurization. Some lifting oil pumps that are matched with lifting cylinders with limit devices can be connected to cables, and their functionality is relatively simple. In addition, the current commercial vehicle cab lifting system is not connected to the vehicle control circuit, and the lifting function needs to be manually controlled to start, which is inconvenient and unsafe. With the trend of the automotive industry turning to new energy becoming increasingly clear, the single mechanical structure of the lifting oil pump cannot meet the increasing electrical function requirements of automobiles:

[0004] Commercial vehicles need to receive electrical signals when driving or parking to determine the working status of the vehicle;

[0005] For safety reasons, commercial vehicles require a structure to connect or disconnect part of the circuit to prevent circuit abnormalities, accidental lifting of the cab, and accidents.

[0006] Therefore, it has become a trend in the industry to develop a simple and efficient lifting oil pump that can judge the working condition of the vehicle through circuit signals to meet the development of future new energy commercial vehicles. Utility Model Content

[0007] The utility model aims at the shortcomings of the prior art and provides a lifting oil pump with a micro switch.

[0008] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0009] A lifting oil pump with a micro switch comprises an oil pump and a reversing valve body installed on the oil pump, and also comprises a reversing handle fixedly connected to the reversing valve body, the reversing valve body is fixedly connected to a rotating arm and the rotating arm is driven to rotate by the reversing handle, and also comprises a micro switch, the rotating arm contacts and cooperates with the contacts of the micro switch and controls the operation of the micro switch; and also comprises a locking pin assembly, the locking pin assembly comprises a latch rod, the latch rod is arranged within the rotation radius of the reversing handle and limits the rotation of the reversing handle.

[0010] Preferably, the locking pin assembly has two groups including a first latch pin assembly and a second latch pin assembly. The two latch pin rods in the first latch pin assembly and the second latch pin assembly limit the rotation position of the reversing handle and restrict it from rotating 90° from the horizontal position A to the vertical position B.

[0011] Preferably, the locking pin assembly includes a mounting frame and a spring, the mounting frame includes a vertically arranged baffle plate, the baffle plate is provided with a hole, one end of the latch rod passes through the hole and the spring in sequence and is provided with a positioning ring at the end, the diameter of the positioning ring is larger than the diameter of the spring, the positioning ring is provided to prevent the spring from loosening and to control the spring to be always mounted on the latch rod, and the spring is located between the positioning ring and the baffle plate.

[0012] Preferably, a pull ring is installed at the other end of the latch rod.

[0013] Preferably, the mounting frame also includes a rear plate arranged parallel to the baffle, the rear plate being provided with a rear hole, one end of the latch rod passing through the rear hole, the horizontal state of the latch rod being ensured by positioning the hole and the rear hole, and the latch rod is only telescopically moved in the horizontal plane to prevent it from tilting.

[0014] Preferably, the micro switch comprises a stainless steel sheet, contacts, wires and a connector.

[0015] Preferably, an inclined surface is provided at the end of the rotating arm, and the inclined surface contacts and cooperates with the stainless steel sheet and presses down the contact point, so that the service life of the rotating arm is increased by setting the inclined surface.

[0016] Preferably, the reversing handle and the reversing valve body are locked and fixed by a locking nut and a spring washer.

[0017] Preferably, a plug and a positioning pin are connected to the reversing valve body and fixed to the oil pump by them.

[0018] The utility model adopts the above technical scheme, which has significant technical effects: the lift oil pump microswitch in the present application can be connected to the internal wiring harness of the vehicle, so that the vehicle computer can effectively judge the vehicle operation status, check safety problems, and protect the life and health of the driver; the lift oil pump microswitch can disconnect the internal circuit of the vehicle computer when the vehicle stops, ensuring that only the cab can be lifted and flipped when the vehicle stops; the lift oil pump microswitch has a simple structure, can be replaced repeatedly, is safe and reliable, and is easy to maintain in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 yes Figure 2 A partial enlarged view of .

[0022] Figure 4 It is a schematic diagram of the position state of the reversing valve of the utility model.

[0023] Figure 5 It is a schematic diagram of the position state of the rotating arm of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the micro switch of the utility model.

[0025] The names of the parts indicated by the numerical labels in the accompanying drawings are as follows: 1-oil pump, 2-reversing valve body, 3-reversing handle, 4-rotating arm, 5-micro switch, 6-lock pin assembly, 7-blocking, 8-locating pin, 51-stainless steel sheet, 52-micro switch, 53-wire, 54-connector, 61-latch rod, 611-locating ring, 612-pull ring, 62-mounting frame, 63-spring, 621-baffle, 622-rear plate. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Example 1

[0028] A lifting oil pump with a micro switch, as shown in the figure, includes an oil pump 1 and a reversing valve body 2 installed on the oil pump 1, and also includes a reversing handle 3 fixedly connected to the reversing valve body 2, the reversing valve body 2 is fixedly connected to a rotating arm 4 and the reversing handle 3 drives the rotating arm 4 to rotate, and also includes a micro switch 5, the rotating arm 4 contacts and cooperates with a contact 52 of the micro switch 5 and controls the operation of the micro switch 5; it also includes a locking pin assembly 6, the locking pin assembly 6 includes a latch rod 61, the latch rod 61 is set within the rotation radius of the reversing handle 3 and limits the rotation of the reversing handle 3.

[0029] The lock pin assembly 6 has two groups including a first latch pin assembly and a second latch pin assembly. The two latch rods 61 in the first latch pin assembly and the second latch pin assembly limit the rotation position of the reversing handle 3 and restrict it from rotating 90° from the horizontal position A to the vertical position B.

[0030] The locking pin assembly 6 includes a mounting frame 62 and a spring 63. The mounting frame 62 includes a vertically arranged baffle plate 621. The baffle plate 621 is provided with a hole. One end of the latch rod 61 passes through the hole and the spring 63 in sequence and a positioning ring 611 is provided at the end. The diameter of the positioning ring 611 is larger than the diameter of the spring 63. The positioning ring 611 is provided to prevent the spring 63 from loosening and to control the spring to be always mounted on the latch rod 61. The spring 63 is located between the positioning ring 611 and the baffle plate 621.

[0031] A pull ring 612 is installed at the other end of the latch rod 61 .

[0032] The mounting frame 62 also includes a rear plate 622 arranged parallel to the baffle 621. The rear plate 622 is provided with a rear hole, and one end of the latch rod 61 passes through the rear hole. The horizontal state of the latch rod 61 is ensured by positioning the hole and the rear hole, and the latch rod 61 is only telescopically moved in the horizontal plane to prevent it from tilting.

[0033] The micro switch 5 includes a stainless steel sheet 51 , a contact 52 , a wire 53 and a connector 54 .

[0034] An inclined surface 41 is provided at the end of the rotating arm 4 . The inclined surface 41 contacts and cooperates with the stainless steel sheet 51 and presses down the contact point 52 . The service life of the rotating arm 4 is increased by the provision of the inclined surface 41 .

[0035] When the reversing handle 3 rotates to position A, the rotating arm 4 also rotates to position A, and the rotating arm 4 presses the stainless steel sheet 51, so that the stainless steel sheet 51 contacts the contact 52, so that the wire 53 is connected, and the current can flow in the micro switch 5. The current signal is transmitted to other components in the system by the connector 54 to judge the running state of the vehicle. For example, when the current can flow through the micro switch 5, the vehicle computer determines that the vehicle is in the driving state. At this time, the motor power supply of the hydraulic system should be disconnected to prevent the accidental lifting of the cab and ensure driving safety. At this time, the reversing handle 3 is blocked by the locking pin assembly 6 and cannot be rotated to other angles at will.

[0036] When the vehicle stops and the cab needs to be flipped, the pull ring 612 of the lock pin assembly 6 needs to be pulled to drive the latch rod 61 in the first latch assembly and the second latch assembly to retract, so that the lock pin assembly 6 fails, and the reversing handle 3 can be rotated to the lifting position B and the lowering position C. After releasing the pull ring 612, the latch rod 61 can be rebounded to the original position by the spring 63. When the reversing handle 3 rotates to the B and C positions, the rotating arm 4 also rotates and leaves the position A at the same time. At this time, the stainless steel sheet 51 does not contact the contact 52, and the wiring harness cannot be turned on. At this time, the current in the micro switch 5 cannot flow through. The vehicle receives the signal and determines that the vehicle has stopped driving at this time. The power supply action except the lifting and lowering functions should be stopped. When the reversing handle 3 is in the lifting position B and the lowering position C, it can be blocked by the lock pin assembly 6, which can ensure that the reversing handle 3 rotates within a safe angle to prevent improper operation and safety accidents.

[0037] Example 2

[0038] The embodiment is the same as the first embodiment, except that the reversing handle 3 and the reversing valve body 2 are locked and fixed by a locking nut and a spring washer.

[0039] Example 3

[0040] The embodiment is the same as the first embodiment, except that a plug 7 and a positioning pin 8 are connected to the reversing valve body 2 and fixed to the oil pump 1 by the plug 7 and the positioning pin 8 .

[0041] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A lifting oil pump with a micro switch, comprising an oil pump (1) and a reversing valve body (2) mounted on the oil pump (1), characterized in that: The invention also comprises a reversing handle (3) fixedly connected to the reversing valve body (2), a rotating arm (4) fixedly connected to the reversing valve body (2) and driven by the reversing handle (3) to rotate the rotating arm (4), and a micro switch (5) is also included, the rotating arm (4) contacts and cooperates with a contact (52) of the micro switch (5) and controls the operation of the micro switch (5); and also comprises a lock pin assembly (6), the lock pin assembly (6) comprising a latch rod (61), the latch rod (61) being arranged within the rotation radius of the reversing handle (3) and limiting the rotation of the reversing handle (3).

2. A lifting oil pump with a micro switch according to claim 1, characterized in that: The lock pin assembly (6) has two groups including a first latch pin assembly and a second latch pin assembly. The two latch pin rods (61) in the first latch pin assembly and the second latch pin assembly limit the rotation position of the reversing handle (3).

3. A lifting oil pump with a micro switch according to claim 1, characterized in that: The lock pin assembly (6) comprises a mounting frame (62) and a spring (63), the mounting frame (62) comprises a baffle (621), a hole is provided on the baffle (621), one end of the latch rod (61) passes through the hole and the spring (63) in sequence and a positioning ring (611) is provided at the end, the diameter of the positioning ring (611) is larger than the diameter of the spring (63), and the spring (63) is located between the positioning ring (611) and the baffle (621).

4. A lifting oil pump with a micro switch according to claim 3, characterized in that: The other end of the latch rod (61) is provided with a pull ring (612).

5. A lifting oil pump with a micro switch according to claim 3, characterized in that: The mounting frame (62) further comprises a rear plate (622) on which a rear hole is provided, through which one end of the latch rod (61) passes.

6. A lifting oil pump with a micro switch according to claim 1, characterized in that: The micro switch (5) comprises a stainless steel sheet (51), a contact (52), a wire (53) and a connector (54).

7. A lifting oil pump with a micro switch according to claim 6, characterized in that: The end of the rotating arm (4) is provided with an inclined surface (41), and the inclined surface (41) contacts and cooperates with the stainless steel sheet (51) and presses down the contact point (52).

8. The lifting oil pump with a micro switch according to claim 1, characterized in that: The reversing handle (3) and the reversing valve body (2) are locked and fixed by means of a locking nut and a spring washer.

9. A lifting oil pump with a micro switch according to claim 1, characterized in that: The reversing valve body (2) is connected to a plug (7) and a positioning pin (8) and is fixed to the oil pump (1) by the plug (7) and the positioning pin (8).

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