CN219220888U - Lever type oil circuit switching mechanism suitable for hydraulic tool and hydraulic tool - Google Patents
Lever type oil circuit switching mechanism suitable for hydraulic tool and hydraulic tool Download PDFInfo
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- CN219220888U CN219220888U CN202320110631.3U CN202320110631U CN219220888U CN 219220888 U CN219220888 U CN 219220888U CN 202320110631 U CN202320110631 U CN 202320110631U CN 219220888 U CN219220888 U CN 219220888U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model belongs to the technical field of hydraulic tools, and particularly relates to a lever type oil circuit switching mechanism suitable for a hydraulic tool and the hydraulic tool. The pump comprises a pump body, wherein an oil inlet channel, an oil outlet channel and an oil return channel are arranged in the pump body; the oil return channel is communicated with an external oil storage component; the oil inlet channel is communicated with the oil outlet channel, and the oil outlet channel is communicated with the oil return channel; an oil return valve assembly movably mounted within the oil return passage; a plunger member movably mounted on the pump body; one end of the compression bar component is communicated with the oil inlet channel; the other end of the compression bar component extends outwards and abuts against the lever valve rod; the middle part of the lever valve rod is hinged on the pump body. The utility model aims to provide a lever type oil way switching mechanism capable of automatically switching an oil inlet mode and an oil return mode and suitable for a hydraulic tool, and the hydraulic tool.
Description
Technical Field
The utility model belongs to the technical field of hydraulic tools, and particularly relates to a lever type oil circuit switching mechanism suitable for a hydraulic tool and the hydraulic tool.
Background
The existing hydraulic tools have the action of extension and retraction, but in order to realize the action, the corresponding design often has a complex structure; or in the process of realizing retraction, external power is needed to realize the retraction action, so that more energy is consumed. Meanwhile, the use stability of the product is also affected by the complex structural design.
Such as chinese patent, application number: 202010232605.9 it provides a power structure of all-purpose electric hydraulic tool, mainly comprising hydraulic pump, oil bag, driving motor, battery and control circuit board; the hydraulic pump comprises a pump body, a piston cavity is arranged in the pump body, a working piston is arranged in the piston cavity, and a piston rod of the working piston extends out of the top end of the pump body and is connected with a clamp head assembly for working; an oil inlet passage and an oil return passage which are not communicated with each other are arranged between the piston cavity and the oil bag.
However, in the above patent, although the oil inlet passage and the oil return passage can be achieved by the hydraulic tool, the hydraulic tool cannot be switched back and forth, so that the hydraulic tool is not labor-saving to use.
Disclosure of Invention
The utility model aims to provide a lever type oil way switching mechanism capable of automatically switching an oil inlet mode and an oil return mode and suitable for a hydraulic tool, and the hydraulic tool.
The purpose of the utility model is realized in the following way:
a lever type oil way switching mechanism suitable for hydraulic tools comprises
The pump body is internally provided with an oil inlet channel, an oil outlet channel and an oil return channel; the oil inlet channel is communicated with an external oil storage component, the oil outlet channel is communicated with a piston cavity of the execution component, and the oil return channel is communicated with the external oil storage component; the oil inlet channel is communicated with the oil outlet channel, and the oil outlet channel is communicated with the oil return channel;
an oil return valve assembly movably installed in the oil return passage and used for cutting off or conducting the oil return passage;
a plunger member movably mounted on the pump body; one end of the compression bar component is communicated with the oil inlet channel and bears the pressure of the oil inlet channel; the other end of the compression bar component extends outwards and abuts against the lever valve rod;
the middle part of the lever valve rod is hinged on the pump body; one end of the lever valve rod is abutted against the compression bar component, and the other end of the lever valve rod is abutted against the oil return valve assembly; when the pressure bar component extends to a first set position, the lever valve rod is pressed on the oil return valve assembly and cuts off the oil return channel; when the plunger member is retracted to a second set position, the return valve assembly is communicated to an external oil reservoir component under pressure of the return passage.
Preferably, the oil return valve assembly comprises a first steel ball and an oil return thimble; the oil return channel is provided with a bending part, and the oil return valve assembly is arranged at the bending part; the first steel ball is abutted against one end of the oil return channel and can seal the oil return channel, the rear part of the first steel ball is provided with the oil return thimble, and the outer end of the oil return thimble is abutted against the lever valve rod; and the oil return thimble is in sealing fit with the pump body.
Preferably, a pressure regulating valve is arranged in the oil inlet channel; when the pressure in the oil inlet channel is larger than a set value, the pressure regulating valve conducts the oil inlet channel and the oil outlet channel;
when the pressure regulating valve is in a conducting state, the pressure in the oil inlet channel enables the pressure rod component to extend to a first set position.
Preferably, a return spring is further arranged on the pump body, one end of the return spring abuts against the pump body, and the other end of the return spring abuts against one end of the lever valve rod adjacent to the oil return valve assembly.
Preferably, the oil inlet channel is further provided with a first safety valve component, and when the pressure in the oil inlet channel exceeds a set safety value, the first safety valve component is communicated with an external oil storage component;
the oil outlet channel is also provided with a second safety valve component, and when the pressure in the oil outlet channel exceeds a set safety value, the second safety valve component is communicated with an external oil storage component.
The hydraulic tool comprises the lever type oil circuit switching mechanism suitable for the hydraulic tool; and also comprises
An oil storage part arranged outside or at one side of the pump body; an oil storage cavity is formed in the oil storage component;
the oil pump component comprises a motor and an oil supply mechanism, the motor drives the oil supply mechanism, and the oil supply mechanism conveys oil in the oil storage cavity to an oil inlet channel of the pump body;
an actuating member mounted on one side of the pump body; the executing component is provided with a tool head; and oil in the oil outlet channel enters a piston cavity of the executing component and drives the tool head to execute action.
Preferably, the oil storage component is a flexible oil bag, and the flexible oil bag is wrapped on the outer side of the pump body.
Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:
1. in the product, the lever principle is adopted for switching the oil return pipeline and the oil outlet pipeline, manual pressurization is not needed in the whole working process, the device has the characteristics of labor saving and simplicity and convenience in operation, the processing efficiency can be greatly improved, and the modern use requirements are met.
2. In the product, an internal closed circulation system is adopted, so that the oil can be reused, and the service life of the oil is prolonged in the whole working process.
3. In this product, designed the oil return oil circuit to the oil return, utilized the pressure of the hydraulic oil that remains in the piston cylinder, realized automatic re-setting to with the hydraulic oil backward flow to the oil pocket in.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is an exploded view of the present utility model.
Fig. 3 is a sectional view of an oil feed passage of the present utility model.
Fig. 4 is a cross-sectional view of the oil outlet passage of the present utility model.
Fig. 5 is a front cross-sectional view of the present utility model.
Fig. 6 is a top cross-sectional view of the present utility model.
Fig. 7 is a cross-sectional profile view of the present utility model.
Fig. 8 is a partial cross-sectional view of a hydraulic tool of the present utility model.
Fig. 9 is a schematic view of a hydraulic tool of the present utility model.
Reference numerals illustrate:
1-a pump body; 11-an oil inlet passage; 111-a pressure regulating valve; 112-a first safety valve part; 121-a second safety valve part; an oil storage member; 141-an oil storage cavity; 15-a piston chamber; 16-a return spring; 17-an oil pump unit; 18-an execution unit; 181-tool head; 2-an oil return valve assembly; 21-steel balls; 22-oil return ejector pins; 3-a compression bar member; 4-lever valve stem.
Detailed Description
The utility model is further described in the following with reference to fig. 1-9 by way of specific examples.
The lever type oil way switching mechanism suitable for the hydraulic tool comprises a pump body 1, wherein an oil inlet channel 11, an oil outlet channel 12 and an oil return channel 13 are arranged in the pump body; the oil inlet channel 11 is communicated with an external oil storage component 14, the oil outlet channel 12 is communicated with a piston cavity 15 of an execution component 18, and the oil return channel 13 is communicated with the external oil storage component 14; the oil inlet channel 11 is communicated with the oil outlet channel 12, and the oil outlet channel 12 is communicated with the oil return channel 13; an oil return valve assembly 2 movably installed in the oil return passage 13 and configured to intercept or communicate the oil return passage 13; a plunger member 3 movably mounted on the pump body 1; one end of the compression bar component 3 is communicated with the oil inlet channel 11 and bears the pressure of the oil inlet channel 11; the other end of the compression bar member 3 protrudes outwards and abuts against the lever stem 4; the middle part of the lever valve rod 4 is hinged on the pump body 1; one end of the lever valve rod 4 is abutted against the compression bar component 3, the other end of the lever valve rod 4 is abutted against the oil return valve component 2, the lever principle is adopted for switching the oil return channel 13 and the oil outlet channel 12, manual pressurization is not needed in the whole working process, the device has the characteristics of labor saving and simplicity in operation, the processing efficiency can be greatly improved, and the modern use requirement is met; when the compression bar component 3 extends to the first setting position, the lever valve rod 4 is pressed on the oil return valve assembly 2 and cuts off the oil return channel 13; when the plunger member 3 is retracted to the second set position, the return valve assembly 2 is conducted to the external reservoir part 14 under the pressure of the return passage 13.
The oil return valve assembly 2 comprises a steel ball 21 and an oil return thimble 22; the oil return channel 13 is provided with a bending part, and the oil return valve assembly 2 is arranged at the bending part; the steel ball 21 is abutted against one end of the oil return channel 13 and can seal the oil return channel 13, an oil return thimble 22 is arranged at the rear part of the steel ball 21, and the outer end of the oil return thimble 22 is abutted against the lever valve rod 4; the oil return thimble 22 is in sealing fit with the pump body 1.
In the pressurizing and oiling process of the lever type oil way switching structure, the oil in the oil inlet channel 11 is continuously injected into the oil outlet channel 12, and the oil outlet channel 12 enters the front tool head 181; during this process, the oil return passage 13 remains blocked; after the pressurized oil injection stage is completed (typically, the tool is finished, for example, a cable is cut off), the motor stops working, the oil pressure of the oil inlet channel 11 disappears, and the lever valve rod 4 is reset under the action of the reset spring 16. The oil return valve assembly 2 is opened under the action of pressure to automatically return oil; by adopting the internal closed circulation system, the oil can be reused, so that the service life of the oil is prolonged in the whole working process.
The pressure regulating valve 111 is arranged in the oil inlet channel 11, so that low-pressure oil can be effectively prevented from directly entering the oil outlet pipeline under the action of the pressure regulating valve 111; when the pressure in the oil inlet passage 11 is greater than the set value, the pressure regulating valve 111 opens the oil inlet passage 11 and the oil outlet passage 12; when the pressure regulating valve 111 is in the on state, the pressure in the oil feed passage 11 causes the plunger member 3 to protrude to the first set position.
The pump body 1 is also provided with a return spring 16, one end of the return spring 16 is abutted against the pump body 1, and the other end is abutted against one end of the lever valve rod 4 adjacent to the oil return valve assembly 2.
The oil inlet channel 11 is also provided with a first safety valve component 112, and when the pressure in the oil inlet channel 11 exceeds a set safety value, the first safety valve component 112 is communicated with an external oil storage component 14; the oil outlet passage 12 is further provided with a second relief valve member 121, and when the pressure in the oil outlet passage 12 exceeds a set relief value, the second relief valve member 121 is in communication with the external oil reservoir member 14.
A hydraulic tool, as shown in fig. 8-9, comprising the lever type oil circuit switching mechanism suitable for the hydraulic tool; further comprises an oil storage part 14 provided outside or on one side of the pump body 1; the oil storage part 14 is internally provided with an oil storage cavity 141; the oil pump part 17 comprises a motor and an oil supply mechanism, wherein the motor provides power to drive the oil supply mechanism to work, and the oil supply mechanism conveys oil in the oil storage cavity 141 to the oil inlet channel 11 of the pump body 1; an actuator 18 mounted on one side of the pump body 1; the execution part 18 is provided with a tool head 181; the oil in the oil outlet channel 12 enters the piston cavity 15 of the executing component 18 and drives the tool head 181 to execute the action.
The oil storage part 14 is a flexible oil bag, wraps the outer side of the pump body 1, designs an oil return path for oil return, utilizes the pressure of hydraulic oil reserved in the piston cylinder to realize automatic resetting, and returns the hydraulic oil into the oil bag.
The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (7)
1. A lever type oil circuit switching mechanism suitable for a hydraulic tool is characterized by comprising
The pump body (1) is internally provided with an oil inlet channel (11), an oil outlet channel (12) and an oil return channel (13); the oil inlet channel (11) is communicated with an external oil storage component (14), the oil outlet channel (12) is communicated with a piston cavity (15) of the execution component (18), and the oil return channel (13) is communicated with the external oil storage component (14); the oil inlet channel (11) is communicated with the oil outlet channel (12), and the oil outlet channel (12) is communicated with the oil return channel (13);
-an oil return valve assembly (2) movably mounted in said oil return channel (13) and adapted to intercept or conduct the oil return channel (13);
a compression bar member (3) movably mounted on the pump body (1); one end of the pressure rod component (3) is communicated with the oil inlet channel (11) and bears the pressure of the oil inlet channel (11); the other end of the compression bar component (3) extends outwards and abuts against the lever valve rod (4);
the middle part of the lever valve rod (4) is hinged on the pump body (1); one end of the lever valve rod (4) is abutted against the compression bar component (3), and the other end of the lever valve rod (4) is abutted against the oil return valve assembly (2); when the pressure bar component (3) stretches out to a first set position, the lever valve rod (4) is pressed on the oil return valve assembly (2) and cuts off the oil return channel (13); when the compression bar member (3) is retracted to a second setting position, the oil return valve assembly (2) is conducted to an external oil reservoir part (14) under the pressure of the oil return passage (13).
2. A lever-type oil path switching mechanism suitable for hydraulic tools according to claim 1, characterized in that the oil return valve assembly (2) comprises a steel ball (21) and an oil return thimble (22); the oil return channel (13) is provided with a bending part, and the oil return valve assembly (2) is arranged at the bending part; the steel ball (21) is abutted against one end of the oil return channel (13) and can seal the oil return channel (13), the oil return thimble (22) is arranged at the rear part of the steel ball (21), and the outer end of the oil return thimble (22) is abutted against the lever valve rod (4); the oil return thimble (22) is in sealing fit with the pump body (1).
3. A lever type oil path switching mechanism suitable for a hydraulic tool according to claim 1, characterized in that a pressure regulating valve (111) is provided in the oil inlet passage (11); when the pressure in the oil inlet channel (11) is larger than a set value, the pressure regulating valve (111) conducts the oil inlet channel (11) and the oil outlet channel (12);
when the pressure regulating valve (111) is in a conducting state, the pressure in the oil inlet channel (11) enables the pressure rod component (3) to extend to a first setting position.
4. Lever-type oil circuit switching mechanism suitable for hydraulic tools according to claim 1, characterized in that the pump body (1) is further provided with a return spring (16), one end of the return spring (16) is abutted against the pump body (1) and the other end is abutted against one end of the lever valve rod (4) adjacent to the oil return valve assembly (2).
5. The lever-type oil path switching mechanism for a hydraulic tool according to claim 1, wherein a first relief valve member (112) is further provided on the oil inlet passage (11), and when the pressure in the oil inlet passage (11) exceeds a set relief value, the first relief valve member (112) is in communication with an external oil reservoir member (14);
the oil outlet channel (12) is also provided with a second safety valve component (121), and when the pressure in the oil outlet channel (12) exceeds a set safety value, the second safety valve component (121) is communicated with an external oil storage component (14).
6. A hydraulic tool, characterized by comprising the lever type oil path switching mechanism suitable for the hydraulic tool according to any one of claims 1 to 5; and also comprises
An oil storage member (14) provided outside or on one side of the pump body (1); an oil storage cavity (141) is formed in the oil storage component (14);
the oil pump component (17) comprises a motor and an oil supply mechanism, the motor drives the oil supply mechanism, and the oil supply mechanism conveys oil in the oil storage cavity (141) to an oil inlet channel (11) of the pump body (1);
an actuator (18) mounted on one side of the pump body (1); the execution part (18) is provided with a tool head (181); the oil in the oil outlet channel (12) enters a piston cavity (15) of the executing component (18) and drives the tool head (181) to execute the action.
7. A hydraulic tool according to claim 6, characterized in that the oil reservoir member (14) is a flexible oil bag which is wrapped around the outside of the pump body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320110631.3U CN219220888U (en) | 2023-01-17 | 2023-01-17 | Lever type oil circuit switching mechanism suitable for hydraulic tool and hydraulic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320110631.3U CN219220888U (en) | 2023-01-17 | 2023-01-17 | Lever type oil circuit switching mechanism suitable for hydraulic tool and hydraulic tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219220888U true CN219220888U (en) | 2023-06-20 |
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ID=86756477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320110631.3U Active CN219220888U (en) | 2023-01-17 | 2023-01-17 | Lever type oil circuit switching mechanism suitable for hydraulic tool and hydraulic tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219220888U (en) |
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2023
- 2023-01-17 CN CN202320110631.3U patent/CN219220888U/en active Active
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