Split type double-plunger booster brake pump

Abstract

The utility model relates to a split type double-plunger supercharging brake pump, which is formed by combining two single-plunger supercharging brake pumps with the same structure, so that the structures of shell parts of the single-plunger supercharging brake pumps are the same; when production and stock-up of all parts are organized in advance, only one brake pump shell needs to be organized and produced, and the occupation of production and stock-up on flowing funds is greatly reduced; besides, parts of the brake pump shell are designed in a revolving body structure and can be machined and produced by a lathe, so that the production cost of the brake pump shell is greatly reduced, and the economic benefits of enterprises are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of power-assisted brake pumps for agricultural machinery or other motor vehicles, specifically to a split-type dual-plunger booster brake pump. Background Technology

[0002] Utility model patent application number 202322013980.6 discloses a plunger booster brake pump structure. During braking, the change in oil pressure in each chamber of the booster brake pump causes the plunger core to move within the plunger, achieving rapid braking. Specifically, this utility model patent discloses a single-plunger booster brake pump structure and a parallel-arranged double-plunger booster brake pump structure, used for different application scenarios. The single-plunger booster brake pump housing has one working chamber, while the double-plunger booster brake pump housing has two working chambers; therefore, the housing structures of the single-plunger and double-plunger booster brake pumps are completely different. To meet timely customer demands, companies typically organize the production and inventory of various parts in advance. Due to the aforementioned reasons, the production and inventory of both the single-plunger and double-plunger booster brake pump housings must be considered simultaneously, resulting in a significant amount of working capital being tied up. This not only affects the workload of the company's production organization but also causes financial difficulties for the company's operations.

[0003] In addition, in the aforementioned utility model patents, the housing of both the single-plunger booster brake pump and the double-plunger booster brake pump is rectangular in shape. Their production requires the use of machining center equipment, resulting in higher production costs, which in turn affects the economic benefits of the enterprise. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a split-type dual-plunger booster brake pump structure composed of two identical plunger booster brake pumps, so as to solve the problems of workload and working capital problems caused by the previous practice of preparing two parts in advance: single-plunger booster brake pump housing and dual-plunger booster brake pump housing.

[0005] To achieve the purpose of the utility model, the present utility model adopts the following technical solution: a split-type dual-plunger booster brake pump, comprising two piston booster brake pumps with identical structures; the two piston booster brake pumps are fixedly connected together to form a split-type dual-plunger booster brake pump.

[0006] Furthermore, the plunger booster brake pump includes a brake pump housing, an oil outlet cap, and a plunger assembly. The oil outlet cap is fixedly disposed at one end of the brake pump housing, and the plunger assembly is movably disposed at the other end of the brake pump housing. An oil inlet is fixedly disposed on the outer circumference of the brake pump housing. The oil outlet cap has a first volumetric cavity inside and an oil outlet at its outer end, which communicates with the first volumetric cavity. A first volumetric cavity connection port is disposed on the outer circumference of the oil outlet cap, which communicates with the first volumetric cavity. When producing a split-type dual-plunger booster brake pump, the first volumetric cavity connection ports of the two plunger booster brake pumps are connected by a connecting oil pipe.

[0007] Furthermore, the first volumetric cavity connection port is a stepped hole; sealing grooves are provided on the outer circular surfaces of both ends of the connecting oil pipe, and sealing rings are provided in the sealing grooves; the two ends of the connecting oil pipe are respectively located in the two first volumetric cavity connection ports.

[0008] Preferably, the first volumetric cavity connection port is a threaded hole; the outer surfaces of both ends of the connecting oil pipe are externally threaded; the two ends of the connecting oil pipe are fixedly connected to the two first volumetric cavity connection ports through threads.

[0009] Furthermore, both the brake pump housing and the oil outlet cap are rotary structures.

[0010] Furthermore, the two plunger booster brake pumps are fixed by the base plate and pressure plate.

[0011] Furthermore, the base plate is a casting, including a base plate body, with a clamping plate A and a clamping plate B respectively on the two end plates of the base plate body; the clamping plate A has a clamping groove A, and the clamping plate B has a clamping groove B.

[0012] Due to the adoption of the above-described technical solution, this utility model has the following beneficial effects: The split-type dual-plunger booster brake pump disclosed in this utility model is composed of two identical plunger booster brake pumps, and the brake pump housing parts have the same structure; when organizing the production and preparation of each part in advance, only one type of brake pump housing needs to be produced, thus greatly reducing the workload of production and preparation and the occupation of working capital; in addition, the brake pump housing parts adopt a rotating body structure design, which can be machined on a lathe, thereby greatly reducing the production cost of the brake pump housing and improving the economic benefits of the enterprise. Attached Figure Description

[0013] Figure 1 A schematic diagram of the appearance of a split-type dual-plunger booster brake pump;

[0014] Figure 2 A schematic diagram showing the structure of a split-type dual-plunger booster brake pump;

[0015] Figure 3 A schematic diagram of the appearance of a plunger booster brake pump;

[0016] Figure 4 A schematic diagram of the cross-sectional structure of a plunger booster brake pump;

[0017] Figure 5 This is a schematic diagram of the base plate's appearance.

[0018] Figure 6 This is a schematic diagram of the external appearance of the connecting oil pipe;

[0019] Figure 7 A schematic diagram of the appearance of a single-plunger booster brake pump;

[0020] Figure 8 This is a schematic diagram of the cross-sectional structure of a single-plunger booster brake pump.

[0021] In the diagram: 1. Plunger booster brake pump; 1.1. Brake pump housing; 1.1.1. Oil inlet; 1.2. Oil outlet cap; 1.2.1. Oil outlet; 1.2.2. First volume chamber connection port; 1.3. Plunger assembly; 1.4. First volume chamber; 2. Base plate; 2.1. Base plate body; 2.2. Clamping plate A; 2.2.1. Clamping groove A; 2.3. Clamping plate B; 2.3.1. Clamping groove B; 3. Pressure plate; 4. Connecting oil pipe; 4.1. Sealing groove; 5. Fixing bolt. Detailed Implementation

[0022] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0023] See the instruction manual appendix Figure 1 , 2 A split-type dual-plunger booster brake pump includes two identical plunger booster brake pumps 1; the two plunger booster brake pumps 1 are fixedly connected together by a base plate 2, a pressure plate 3, and a fixing bolt 5, and the first volume chamber connection ports 1.2.2 of the two plunger booster brake pumps 1 are connected by a connecting oil pipe 4, thus forming a split-type dual-plunger booster brake pump.

[0024] See the instruction manual appendix Figure 3 , 45, 6: The plunger booster brake pump 1 includes a brake pump housing 1.1, an oil outlet cap 1.2, and a plunger assembly 1.3. Both the brake pump housing 1.1 and the oil outlet cap 1.2 are rotary structures, machined by automatic lathes, which significantly reduces production costs compared to the original machining center method. The oil outlet cap 1.2 is fixedly welded to one end of the brake pump housing 1.1, and the plunger assembly 1.3 is movably mounted on the other end of the brake pump housing 1.1. An oil inlet 1.1.1 is fixedly welded to the outer circumference of the brake pump housing 1.1. The oil outlet cap 1.2 has a first volumetric cavity 1.4 inside and an oil outlet 1.2.1 at its outer end. The oil outlet 1.2.1 and the first volumetric cavity 1.4 are connected. 4. Connecting; the outer circular surface of the oil outlet cap 1.2 is provided with a first volume cavity connection port 1.2.2 that connects to the first volume cavity 1.4, and the first volume cavity connection port 1.2.2 is a stepped hole; the connecting oil pipe 4 is a short circular pipe, and sealing grooves 4.1 are machined on the outer circular surfaces of both ends, and sealing rings are provided in the sealing grooves 4.1; the bottom plate 2 is a casting, including the bottom plate body 2.1, the body 2.1 is provided with threaded holes, and the two end plates of the bottom plate body 2.1 are respectively provided with a clamping plate A2.2 and a clamping plate B2.3; the clamping plate A2.2 is provided with two arc-shaped clamping grooves A2.2.1, and the clamping plate B2.3 is provided with two arc-shaped clamping grooves B2.3.1; the pressure plate 3 is a long plate with a through hole in the middle;

[0025] When assembling the split-type dual-plunger booster brake pump, the two ends of the connecting oil pipe 4 are respectively set in the first volume chamber connection ports 1.2.2 of the two plunger booster brake pumps 1, and sealed by the sealing ring in the sealing groove 4.1; the outer circular surfaces of the oil outlet end caps 1.2 of the two plunger booster brake pumps 1 are respectively set in the slots A2.2.1 of the base plate 2, and the outer circular surfaces of the brake pump housings 1.1 of the two plunger booster brake pumps 1 are respectively set in the grooves B2.3.1 of the base plate 2. The pressure plate 3 is abutted against the upper part of the brake pump housing 1.1, and the fixing bolts 5 pass through the through holes of the pressure plate 3 and engage with the threaded holes of the base plate 2; tighten the fixing bolts 5 to fix the two plunger booster brake pumps 1, and complete the assembly of the split-type dual-plunger booster brake pump;

[0026] When using the split-type dual-plunger booster brake pump, the two oil outlets 1.2.1 are connected to the left and right brake cylinders of the tractor or large vehicle respectively through pipelines. When both plunger assemblies 1.3 are pressed simultaneously, the split-type dual-plunger booster brake pump pumps brake oil into the brake cylinders for braking. The purpose of setting a connecting oil pipe 4 between the first volume chambers 1.4 of the two plunger booster brake pumps is to connect the first volume chambers 1.4 of the two plunger booster brake pumps, so as to ensure that the brake oil pressure pumped to the left and right brake cylinders is equal when the split-type dual-plunger booster brake pump is working, and to avoid the problem of uneven braking.

[0027] See the instruction manual appendix Figure 7 , 8When the first volume chamber connection port 1.2.2 is not machined on the oil outlet cap 1.2, the plunger booster brake pump 1 is a single-plunger booster brake pump. It can be seen that the single-plunger booster brake pump housing and the double-plunger booster brake pump housing are exactly the same. When organizing the production and preparation of the brake pump housing 1.1 in advance, only one type of brake pump housing 1.1 needs to be produced, thus greatly reducing the occupation of working capital for production and preparation. When organizing the production and preparation of the oil outlet cap 1.2 in advance, it is not necessary to machine the first volume chamber connection port 1.2.2. If the production of the single-plunger booster brake pump is organized, all the parts that have been organized and prepared in advance (excluding the base plate 2, pressure plate 3, connecting oil pipe 4, and fixing bolt 5) can be assembled. If the production of the split double-plunger booster brake pump is organized, it is only necessary to machine the first volume chamber connection port 1.2.2 on the pre-machined oil outlet cap 1.2, and then assemble all the parts that have been organized and prepared in advance.

[0028] Compared to the original structure, this split-type dual-plunger booster brake pump adds a base plate 2, a pressure plate 3, a connecting oil pipe 4, and a fixing bolt 5. However, the total cost of the added components is relatively low. Compared to the production cost of the brake pump housing 1.1, it still has a comparative advantage.

[0029] Preferably, the first volume chamber connection port 1.2.2 of the oil outlet end cap 1.2 is a threaded hole, and the outer circular surfaces of both ends of the connecting oil pipe 4 are machined with external threads; when assembling a single plunger booster brake pump, the first volume chamber connection port 1.2.2 of the oil outlet end cap 1.2 is sealed with a plug; when assembling a split-type dual plunger booster brake pump, there is no need to process the oil outlet end cap 1.2, and both ends of the connecting oil pipe 4 are fixedly and sealed to the two first volume chamber connection ports 1.2.2 by threads.

[0030] This utility model's split-type dual-plunger booster brake pump allows for the production of only one type of brake pump housing 1.1 when all parts are prepared in advance. When shipment is required, it can be flexibly assembled into a single-plunger booster brake pump or a split-type dual-plunger booster brake pump according to the customer's specific needs. Therefore, the quantity of brake pump housing 1.1 prepared is reduced by half, greatly reducing the amount of working capital tied up in production preparation. In addition, the rotating body structure design of the brake pump housing 1.1 also greatly reduces production costs, thereby improving the company's economic benefits.

[0031] The parts of this utility model not described in detail are existing technologies.

Claims

1. A split-type dual-plunger booster brake pump, characterized in that: It includes two identical plunger booster brake pumps (1); the two plunger booster brake pumps (1) are fixedly connected together to form a split-type dual-plunger booster brake pump; the plunger booster brake pump (1) includes a brake pump housing (1.1), an oil outlet cap (1.2), and a plunger assembly (1.3), the oil outlet cap (1.2) is fixedly disposed at one end of the brake pump housing (1.1), and the plunger assembly (1.3) is movably disposed at the other end of the brake pump housing (1.1); an oil inlet (1.1) is fixedly disposed on the outer circumference of the brake pump housing (1.1). 1) The oil outlet end cap (1.2) is provided with a first volume chamber (1.4) and an oil outlet (1.2.1) at its outer end. The oil outlet (1.2.1) is connected to the first volume chamber (1.4); the oil outlet end cap (1.2) is provided with a first volume chamber connection port (1.2.2) on its outer circular surface. The first volume chamber connection port (1.2.2) is connected to the first volume chamber (1.4); when producing a split-type dual-plunger booster brake pump, the first volume chamber connection ports (1.2.2) of the two plunger booster brake pumps (1) are connected by a connecting oil pipe (4); Both the brake pump housing (1.1) and the oil outlet cap (1.2) are rotary structures.

2. The split-type dual-plunger booster brake pump according to claim 1, characterized in that: The first volume chamber connection port (1.2.2) is a stepped hole; the outer circular surface of both ends of the connecting oil pipe (4) is provided with sealing grooves (4.1), and sealing rings are provided in the sealing grooves (4.1); the two ends of the connecting oil pipe (4) are respectively set in the two first volume chamber connection ports (1.2.2).

3. The split-type dual-plunger booster brake pump according to claim 1, characterized in that: The first volume chamber connection port (1.2.2) is a threaded hole; the two ends of the connecting oil pipe (4) have external threads on their outer circular surfaces; the two ends of the connecting oil pipe (4) are fixedly connected to the two first volume chamber connection ports (1.2.2) through threads.

4. The split-type dual-plunger booster brake pump according to claim 1, characterized in that: Two plunger booster brake pumps (1) are fixed by a base plate (2) and a pressure plate (3).

5. The split-type dual-plunger booster brake pump according to claim 1, characterized in that: The base plate (2) includes a base plate body (2.1), and a card plate A (2.2) and a card plate B (2.3) are respectively provided on the two end plates of the base plate body (2.1); the card plate A (2.2) is provided with a card slot A (2.2.1), and the card plate B (2.3) is provided with a card slot B (2.3.1).

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