Cab overturning integrated type combined pump

Abstract

The utility model discloses a cab turnover integrated type combination pump which comprises a valve block, an oil tank, a motor pump assembly and a manual pump assembly, a manual pressing cavity is arranged in the valve block, the valve block is provided with an oil channel a, an oil channel b, a manual oil suction channel, an electric oil suction channel, a distribution cavity, an oil return channel, a working port A and a working port B, a distribution shaft is rotatably arranged in the distribution cavity, and the distribution shaft is connected with the motor pump assembly. The distribution shaft and the manual rod are arranged at the same side end of the valve block, the distribution shaft is used for switching the oil channel a to be communicated with the working port A or the working port B, one end of the manual oil suction channel is communicated with the oil tank, the other end of the manual oil suction channel is communicated with the manual pressing cavity, the manual oil suction channel is communicated with the distribution cavity through the oil channel a, and a one-way ball is arranged in the manual oil suction channel. A one-way valve is arranged in the oil channel a, one end of the electric oil suction channel is communicated with the oil tank through the oil channel b, and the other end of the electric oil suction channel is communicated with the oil channel a. Through the design of the manual pump assembly and the oil channel, the occupied space is effectively reduced, and the size of an opened window can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic technology field especially relates to a cab rollover integrated combined pump. BACKGROUND

[0002] The existing medium and heavy -duty cab rollover hydraulic system includes electric pump, manual pump and relay assembly, at present, in the field of new energy commercial heavy -duty truck, the cab rollover is to product requirement small, light in weight, large -capacity oil box, low cost, safe and reliable etc., and manual combined pump is one of important components of heavy -duty truck cab, for example, the high degree of integration hand electric pump disclosed in Chinese patent (application publication number CN115573877A).

[0003] The hand electric combined pump is installed at the footrest position of the cab, and the operation part needs to be windowed to expose the manual lever and the distribution shaft, the manual lever and the distribution shaft of the existing combined pump are far apart, and a large window is needed, which affects the appearance and operation convenience of the vehicle, and in addition, the existing manual pump has a complex structure and occupies a large space, so improvement is needed. SUMMARY

[0004] The utility model aims at providing a cab rollover integrated combined pump, on the one hand, the manual lever and the distribution shaft are arranged at the same side end of the valve block, and on the other hand, the design of the manual pump assembly and the valve block oil circuit effectively reduces the occupied space, so that the size of the window can be reduced.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a cab rollover integrated combined pump, comprising a valve block, an oil tank, a motor pump assembly and a manual pump assembly, a manual pressing cavity is arranged in the valve block, the manual pump assembly comprises a plunger assembly slidably arranged in the manual pressing cavity, a manual lever for providing rotary driving force and a conversion assembly for converting rotary motion into linear motion, the valve block is provided with an oil channel a, an oil channel b, a manual oil suction channel, an electric oil suction channel, a distribution cavity, an oil return channel, a working port A and a working port B, a distribution shaft is rotatably arranged in the distribution cavity, the distribution shaft and the manual lever are arranged at the same side end of the valve block, the distribution shaft is used to switch the oil channel a to communicate with the working port A or the working port B, the working port switched to be isolated from the oil channel a is communicated with the oil tank through the oil return channel, one end of the manual oil suction channel is communicated with the oil tank, the other end of the manual oil suction channel is communicated with the manual pressing cavity, the manual oil suction channel is communicated with the distribution cavity through the oil channel a, a one-way ball body for isolating the oil tank and the oil channel a is arranged in the manual oil suction channel, the manual pump assembly is used to pump the hydraulic oil in the oil tank to the oil channel a through the manual oil suction channel, a one-way valve for preventing the hydraulic oil from flowing back to the manual oil suction channel is arranged in the oil channel a, one end of the electric oil suction channel is communicated with the oil tank through the oil channel b, the other end of the electric oil suction channel is communicated with the oil channel a, and the motor pump assembly can drive the hydraulic oil in the oil tank to be pumped to the oil channel a through the electric oil suction channel.

[0006] Further, the conversion assembly comprises a rotating block and a connecting shaft, one end of the rotating block is connected to the inner end of the manual lever, the other end of the connecting shaft is inserted with the connecting shaft, an opening slot is formed on the valve block for the rotating block to extend out, the connecting shaft is inserted into the plunger assembly, the manual lever can drive the rotating block to reciprocate, and the rotating block can drive the plunger assembly to reciprocate along the manual pressing cavity when the rotating block reciprocates.

[0007] Further, the upper end surface of the valve block is provided with a transversely arranged protruding strip, the manual pressing cavity is arranged in the protruding strip and extends along the length direction of the protruding strip, and the protruding strip is provided with a avoiding slot for the connecting shaft to reciprocate on one side of the rotating block.

[0008] Further, the plunger assembly comprises a plunger, a insertion slot is arranged on the side end of the plunger for the connecting shaft to be inserted, and the width between the upper and lower ends of the insertion slot is greater than the outer diameter of the connecting shaft, so that the connecting shaft has an up-and-down movement allowance in the insertion slot.

[0009] Further, a limiting structure for limiting the rotation angle of the distribution shaft is arranged on the valve block, the limiting structure comprises a limiting rod connected to the valve block and an arc-shaped limiting slot arranged on the side wall of the distribution shaft, and the rotation angle of the distribution shaft is limited by the limiting rod and the arc-shaped limiting slot.

[0010] Further, the manual oil suction channel is connected with the oil tank through the communication port, the oil channel b is connected to one side of the manual oil suction channel adjacent to the communication port, and the valve block is provided with a filter cover at the position corresponding to the communication port.

[0011] Further, an overflow valve is arranged on the valve block and connected with the oil channel a.

[0012] Further, the outer periphery of the plunger is provided with a piston ring in sliding cooperation with the manual pressing cavity.

[0013] Further, the valve block comprises a first valve block and a second valve block which are transversely and sealingly connected as a whole, the oil tank is fixedly installed on the upper end of the first valve block, and the motor pump assembly is fixedly installed on the upper end of the second valve block.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The cab overturning integrated combined pump has the following advantages: on the one hand, the manual lever and the distribution shaft are arranged on the same side end of the valve block, and the relative positions are close, so that the occupied layout area is small; on the other hand, the design of the manual pump assembly and the valve block oil circuit effectively reduces the occupied space, so that the size of the opened window can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1It is the whole structure schematic view of the utility model.

[0017] Figure 2 It is the exploded view of the utility model.

[0018] Figure 3 It is the structure schematic view of the convex strip of the utility model.

[0019] Figure 4 It is the schematic view of the manual pressing cavity of the utility model.

[0020] Figure 5 It is the internal structure schematic view of the distribution shaft of the utility model.

[0021] Figure 6 It is the internal oil circuit schematic view of the valve block of the utility model.

[0022] Figure 7 It is the structure schematic view of the manual oil suction passage of the utility model.

[0023] Figure 8 It is the sectional view of the motor pump assembly of the utility model.

[0024] Figure 9 It is the schematic view of the limiting structure of the utility model.

[0025] In the drawing: 10, valve block;11, convex strip;111, manual pressing cavity;112, avoiding groove;12, oil channel a;121, one-way valve;13, oil channel b;14, manual oil suction passage;141, one-way ball;15, electric oil suction passage;16, distribution cavity;17, oil return passage;18, working port A;19, working port B;20, oil tank;30, motor pump assembly;40, manual pump assembly;41, plunger assembly;411, plunger;4111, insertion slot;412, piston ring;42, manual rod;43, conversion assembly;431, rotating block;432, connecting shaft;50, distribution shaft;51, communication hole;52, oil return channel;60, limiting structure;61, limiting rod;62, arc-shaped limiting groove;70, filter cover;80, overflow valve. DETAILED DESCRIPTION

[0026] The utility model will be further explained in connection with the drawings.

[0027] As Figures 1-9 shown, a cab overturning integrated combined pump, including valve block 10, oil tank 20, motor pump assembly 30 and manual pump assembly 40, oil tank 20 and manual pump assembly 40 are fixedly installed on the upper end surface of valve block 10.

[0028] The valve block 10 is provided with a manual pressing cavity 111, the manual pump assembly 40 includes a plunger assembly 41 slidably arranged in the manual pressing cavity 111, a manual rod 42 for providing rotary driving force, and a conversion assembly 43 for converting rotary motion into linear motion. That is, the conversion assembly 43 can convert the reciprocating rotary motion of the manual rod 42 into the transverse reciprocating linear motion of the plunger assembly 41.

[0029] The valve block 10 is provided with an oil passage a 12, an oil passage b 13, a manual oil suction channel 14, an electric oil suction channel 15, a distribution cavity 16, an oil return channel 17, a working port A 18 and a working port B 19. The distribution shaft 50 is rotatably arranged in the distribution cavity 16, and the distribution shaft 50 and the manual rod 42 are arranged at the same side end of the valve block 10. The distribution shaft 50 is used to switch the oil passage a 12 to communicate with the working port A 18 or the working port B 19, and switch to the working port which is isolated from the oil passage a 12 to communicate with the oil tank 20 through the oil return channel 17. Specifically, the working port A 18 is used to connect the upper cavity of the piston cavity of the driving actuator, and the working port B 19 is used to connect the lower cavity of the piston cavity of the driving actuator. Of course, it can also be switched to the working port A 18 for connecting the lower cavity of the piston cavity of the driving actuator, and the working port B 19 for connecting the upper cavity of the piston cavity of the driving actuator. The driving actuator includes but is not limited to a hydraulic cylinder. The distribution shaft 50 is provided with three communication holes 51 and an oil return channel 52 in the circumferential direction. The three communication holes 51 and the oil return channel 52 are uniformly distributed around the distribution shaft 50. The three communication holes 51 are in communication with each other and are isolated from the oil return channel 52. The oil return channel 52 is in communication with the oil return channel 17.

[0030] When the distribution shaft 50 is in the first position, the oil passage a 12 communicates with the working port A 18. At this time, the working port B 19 is isolated from the oil passage a 12, and the working port B 19 communicates with the oil return channel 17 through the oil return channel 52. When the distribution shaft 50 is in the second position, the oil passage a 12 communicates with the working port B 19. At this time, the working port A 18 is isolated from the oil passage a 12 through the oil return channel 52, and the working port A 18 communicates with the oil return channel 17.

[0031] The one end of the manual oil suction passage 14 is communicated with the oil tank 20, the other end of the manual oil suction passage 14 is communicated with the manual pressing cavity 111, the manual oil suction passage 14 is communicated with the distribution cavity 16 through the oil channel a12, the one-way ball 141 for separating the oil tank 20 and the oil channel a12 is arranged in the manual oil suction passage 14, the manual pump assembly 40 is used for pumping the hydraulic oil in the oil tank 20 to the oil channel a12 through the manual oil suction passage 14, the one-way valve 121 for preventing the hydraulic oil from flowing back to the manual oil suction passage 14 is arranged in the oil channel a12, specifically, the second valve port is arranged on the manual oil suction passage 14, the one-way ball 141 is arranged at the second valve port, the third valve port is arranged on the oil channel a12 adjacent to the one end of the manual oil suction passage 14, the one-way valve 121 is arranged at the third valve port, when the user drives the manual lever 42 of the manual pump assembly 40 to reciprocate, the plunger assembly 41 moves transversely in the manual pressing cavity 111 to generate negative pressure on the side of the manual oil suction passage 14 adjacent to the manual pressing cavity 111, at this time, the hydraulic oil in the oil tank 20 pushes the one-way ball 141 away at the second valve port, at the same time, the hydraulic oil also opens the one-way valve 121, so that the manual oil suction passage 14 is communicated with the oil channel a12, thereby pumping the hydraulic oil in the oil tank 20 into the oil channel a12.

[0032] The one end of the manual oil suction passage 14 is communicated with the oil tank 20, the other end of the manual oil suction passage 14 is communicated with the manual pressing cavity 111, the manual oil suction passage 14 is communicated with the distribution cavity 16 through the oil channel a12, the one-way ball 141 for separating the oil tank 20 and the oil channel a12 is arranged in the manual oil suction passage 14, the manual pump assembly 40 is used for pumping the hydraulic oil in the oil tank 20 to the oil channel a12 through the manual oil suction passage 14, the one-way valve 121 for preventing the hydraulic oil from flowing back to the manual oil suction passage 14 is arranged in the oil channel a12, specifically, the second valve port is arranged on the manual oil suction passage 14, the one-way ball 141 is arranged at the second valve port, the third valve port is arranged on the oil channel a12 adjacent to the one end of the manual oil suction passage 14, the one-way valve 121 is arranged at the third valve port, when the user drives the manual lever 42 of the manual pump assembly 40 to reciprocate, the plunger assembly 41 moves transversely in the manual pressing cavity 111 to generate negative pressure on the side of the manual oil suction passage 14 adjacent to the manual pressing cavity 111, at this time, the hydraulic oil in the oil tank 20 pushes the one-way ball 141 away at the second valve port, at the same time, the hydraulic oil also opens the one-way valve 121, so that the manual oil suction passage 14 is communicated with the oil channel a12, thereby pumping the hydraulic oil in the oil tank 20 into the oil channel a12.

[0033] In some embodiments, the conversion assembly 43 comprises a rotating block 431 and a connecting shaft 432, one end of the rotating block 431 is connected to the inner end of the manual lever 42, the other end of the connecting shaft 432 is inserted into the connecting shaft 432, the valve block 10 is provided with an opening slot for the rotating block 431 to extend out, the connecting shaft 432 is inserted into the plunger assembly 41, the manual lever 42 can drive the rotating block 431 to reciprocate, and the rotating block 431 can drive the plunger assembly 41 to slide reciprocally along the manual pressing cavity 111 when the rotating block 431 reciprocates.

[0034] In some embodiments, the upper end surface of the valve block 10 is provided with a transversely arranged convex strip 11, the manual pressing cavity 111 is arranged in the convex strip 11 and extends along the length direction of the convex strip 11, and the convex strip 11 is provided with an avoiding slot 112 for the connecting shaft 432 to reciprocate on the side corresponding to the rotating block 431.

[0035] In some embodiments, the plunger assembly 41 comprises a plunger 411, and a slot 4111 is arranged at the side end of the plunger 411 for fitting and inserting the connecting shaft 432, in particular, the transverse width of the slot 4111 matches the outer diameter of the connecting shaft 432, so that the plunger 411 and the connecting shaft 432 have better synchronous linkage, and the width between the upper and lower ends of the slot 4111 is greater than the outer diameter of the connecting shaft 432, so that the connecting shaft 432 has an up-and-down movement allowance in the slot 4111, that is, when the manual lever 42 reciprocates, the connecting shaft 432 rotates around the manual lever 42 as the rotation axis, and the rotation track is an arc track, and the design of the slot 4111 can ensure that the connecting shaft 432 moves vertically in the slot 4111. In order to ensure that the manual lever 42 can synchronously drive the rotating block 431 to reciprocate, that is, to avoid the rotating block 431 from slipping with the manual lever 42, the connecting end of the manual lever 42 is arranged as a gear part, the position of the rotating block 431 corresponding to the connecting end of the manual lever 42 is arranged as a gear groove matched with the gear part, and the gear part of the manual lever 42 is inserted into the gear groove of the rotating block 431, so that the rotating block 431 can be stably driven to reciprocate.

[0036] In some embodiments, the valve block 10 is provided with a limiting structure 60 for limiting the rotation angle of the distribution shaft 50, and the limiting structure 60 comprises a limiting rod 61 connected to the valve block 10 and an arc-shaped limiting slot 62 arranged on the side wall of the distribution shaft 50, and the rotation angle of the distribution shaft 50 is limited by the limiting rod 61 and the arc-shaped limiting slot 62.

[0037] In some embodiments, the manual oil suction channel 14 is connected to the oil tank 20 through a communication port, the oil channel b13 is connected to one side of the manual oil suction channel 14 adjacent to the communication port, and the valve block 10 is provided with a filter cover 70 at the position corresponding to the communication port. The filter cover 70 can prevent impurities in the oil tank 20 from entering the oil channel of the valve block 10 and blocking the oil channel.

[0038] In some embodiments, the valve block 10 is provided with an overflow valve 80 connected to the oil channel a12. The overflow valve 80 is arranged to play a safety role, preventing the hydraulic pressure in the oil channel a12 from being too high to damage the oil channel in the valve block 10.

[0039] In some embodiments, the outer periphery of the plunger 411 is provided with a piston ring 412 in sliding cooperation with the manual pressing cavity 111.

[0040] In some embodiments, the valve block 10 comprises a first valve block 10 and a second valve block 10 which are transversely and sealingly connected as a whole, the oil tank 20 is fixedly installed on the upper end of the first valve block 10, and the motor pump assembly 30 is fixedly installed on the upper end of the second valve block 10.

[0041] In summary, the utility model has the following beneficial effects:

[0042] The cab overturning integrated combined pump has the advantages that on one hand, the manual lever 42 and the distribution shaft 50 are arranged at the same side end of the valve block 10, and the relative positions are close, and the occupied arrangement surface is small; on the other hand, through the design of the oil way of the manual pump assembly 40 and the valve block 10, the occupied space is effectively reduced, so that the size of the opened window can be reduced.

[0043] The above is only the preferred embodiment of the utility model, therefore, equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application range are included in the utility model patent application range.

Claims

1. A cab rollover integrated combination pump characterized by: The valve block (10) is provided with a manual pressing cavity (111), the manual pump assembly (40) includes a plunger assembly (41) slidably arranged in the manual pressing cavity (111), a manual rod (42) for providing rotary driving force, and a conversion assembly (43) for converting rotary motion into linear motion, the valve block (10) is provided with an oil channel a (12), an oil channel b (13), a manual oil suction channel (14), an electric oil suction channel (15), a distribution cavity (16), an oil return channel (17), a working port A (18) and a working port B (19), the distribution cavity (16) is rotatably provided with a distribution shaft (50), the distribution shaft (50) and the manual rod (42) are arranged at the same side end of the valve block (10), the distribution shaft (50) is used for switching the oil channel a (12) to communicate with the working port A (18) or the working port B (19), and the working port switched to be isolated from the oil channel a (12) is communicated with the oil tank (20) through the oil return channel (17), one end of the manual oil suction channel (14) is communicated with the oil tank (20), the other end of the manual oil suction channel (14) is communicated with the manual pressing cavity (111), the manual oil suction channel (14) is communicated with the distribution cavity (16) through the oil channel a (12), the manual oil suction channel (14) is provided with a one-way ball (141) for isolating the oil tank (20) and the oil channel a (12), and the manual pump assembly (40) is used for pumping hydraulic oil in the oil tank (20) to the oil channel a (12) through the manual oil suction channel (14), the oil channel a (12) is provided with a one-way valve (121) for preventing the hydraulic oil from flowing back to the manual oil suction channel (14), one end of the electric oil suction channel (15) is communicated with the oil tank (20) through the oil channel b (13), the other end of the electric oil suction channel (15) is communicated with the oil channel a (12), and the motor pump assembly (30) can drive the hydraulic oil in the oil tank (20) to be pumped to the oil channel a (12) through the electric oil suction channel (15).

2. The cab tilting integrated combination pump of claim 1, wherein: The conversion assembly (43) includes a rotary block (431) and a connecting shaft (432), one end of the rotary block (431) is connected to the inner end of the manual rod (42), the other end of the connecting shaft (432) is inserted into the connecting shaft (432), the valve block (10) is provided with an opening slot for the rotary block (431) to extend out, the connecting shaft (432) is inserted into the plunger assembly (41), the manual rod (42) can drive the rotary block (431) to reciprocate, and the rotary block (431) can drive the plunger assembly (41) to reciprocate along the manual pressing cavity (111) when reciprocating.

3. A cab tilting integrated combination pump according to claim 2, characterized in that: The upper end surface of the valve block (10) is provided with a transversely arranged protrusion (11), the manual pressing cavity (111) is arranged in the protrusion (11) and extends along the length direction of the protrusion (11), and the protrusion (11) is provided with an avoidance slot (112) for the connecting shaft (432) to reciprocate on the side corresponding to the rotary block (431).

4. The cab tilting integrated combination pump of claim 3, wherein: The plunger assembly (41) comprises a plunger (411) provided with a slot (4111) at a side end for fitting insertion of a connecting shaft (432), a width between upper and lower ends of the slot (4111) being greater than an outer diameter of the connecting shaft (432) so that the connecting shaft (432) has an up-and-down movement allowance in the slot (4111).

5. The cab tilting integrated combination pump of claim 1, wherein: The valve block (10) is provided with a limiting structure (60) for limiting a rotation angle of the distribution shaft (50), the limiting structure comprising a limiting rod (61) connected to the valve block (10) and an arc-shaped limiting slot (62) arranged on a side wall of the distribution shaft (50), and the rotation angle of the distribution shaft (50) is limited by limiting cooperation of the limiting rod (61) and the arc-shaped limiting slot (62).

6. The cab tilting integrated combination pump of claim 1, wherein: The manual oil suction channel (14) is connected to the oil tank (20) through a communication port, the oil channel b (13) is connected to one side of the manual oil suction channel (14) adjacent to the communication port, and the valve block (10) is provided with a filter cover (70) at a position corresponding to the communication port.

7. The cab tilting integrated combination pump of claim 1, wherein: The valve block (10) is provided with an overflow valve (80) connected to the oil channel a (12).

8. The cab tilting integrated combination pump of claim 4, wherein: The plunger (411) is provided with a piston ring (412) in sliding cooperation with the manual pressing cavity (111).

9. The cab tilting integrated combination pump of any one of claims 1-8, wherein: The valve block (10) comprises a first valve block (10) and a second valve block (10) transversely and sealingly connected as a whole, the oil tank (20) is fixedly installed on an upper end of the first valve block, and the motor pump assembly (30) is fixedly installed on an upper end of the second valve block.

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