Hydraulic bar shearing device

Abstract

The utility model belongs to the technical field of shearing equipment, and particularly relates to a hydraulic bar shearing device. The bar hydraulic shearing device comprises a hydraulic driving part and a shear part connected to one end of the hydraulic driving part, the hydraulic driving part comprises an oil cylinder body provided with a first oil port and a second oil port, an oil cylinder rod and a flange ring, and the shear part comprises a cutter body seat, a static cutter and a movable cutter which is arranged opposite to the static cutter and connected to the cutter body seat in a sliding mode. The first end of the oil cylinder rod is fixedly connected to the movable cutter, the second end of the oil cylinder rod is slidably connected to the inner cavity, the second end and the inner cavity form a first oil cavity and a second oil cavity, the first oil cavity and the second oil cavity are correspondingly connected with the first oil port and the second oil port respectively, and hydraulic oil can be conducted through a high hydraulic station to move the movable cutter. According to the shearing device, manpower is saved, and the shearing efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of shearing equipment, and in particular relates to a hydraulic shearing device for bar materials. Background Art

[0002] In the field of metal processing, metal bars such as round steel are often cut. Abrasive wheel cutters or electric scissors are commonly used for cutting. Abrasive wheel cutters are not suitable for cutting in environments containing flammable and explosive gases. The cutting process will produce iron filings, which is prone to work injuries and loud noises. Electric scissors require manual effort, which is not only laborious but also affects the cutting efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a bar hydraulic shear, aiming to solve the problem of labor-intensive and low shearing efficiency in metal bar shearing.

[0004] The utility model provides a bar hydraulic shear, comprising a hydraulic drive part and a scissors part connected to one end of the hydraulic drive part, the hydraulic drive part comprising a cylinder body provided with a first oil port and a second oil port, a cylinder rod connected to the inner cavity of the cylinder body and a flange ring sleeved on the outer side of the cylinder rod, the scissors part comprising a knife body seat connected to the cylinder body, a static knife fixedly connected to the knife body seat, a movable knife arranged opposite to the static knife and slidably connected to the knife body seat, the first end of the cylinder rod is fixedly connected to the movable knife and the second end thereof is slidably connected to the inner cavity, the second end and the inner cavity constitute a first oil chamber and a second oil chamber, the first oil chamber and the second oil chamber are respectively connected to the first oil port and the second oil port correspondingly, and hydraulic oil can be conducted through a high hydraulic station to move the movable knife.

[0005] In other embodiments, a sealing ring is disposed on the outer periphery of the second end portion to isolate the first oil chamber from the second oil chamber.

[0006] In other embodiments, a handle is further included, and the handle is connected to the outer side of the cylinder body.

[0007] In other embodiments, a key pin is provided between the movable knife and the knife body seat, and the key pin is clamped on the movable knife and slidably connected to the knife body seat.

[0008] In other embodiments, the key pin is slidably connected to the key slot of the tool body seat, and a grease layer is provided on the outer surfaces of the key pin and the key slot.

[0009] In other embodiments, the maximum outer diameter of the cutter is 145 mm, and the maximum length of the cutter is 350 mm.

[0010] In other embodiments, the stationary knife is clamped in a groove of the knife body seat and fixedly connected to the knife body seat via screws.

[0011] Beneficial effects: The utility model provides a bar hydraulic shear, wherein the hydraulic drive unit includes a cylinder body provided with a first oil port and a second oil port, a cylinder rod connected to the inner cavity of the cylinder body, the first end of the cylinder rod is fixedly connected to the moving knife and the second end thereof is slidably connected to the inner cavity, the second end and the inner cavity form a first oil cavity and a second oil cavity, and the first oil cavity and the second oil cavity are respectively connected to the first oil port and the second oil port. The two oil cavities are provided to use the pressure of the hydraulic oil to move the moving knife to shear the bar, which not only saves manpower but also effectively improves the shearing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a bar hydraulic shear in an embodiment of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of a bar hydraulic shear in an embodiment of the utility model;

[0014] In the figure, 1 is a hydraulic drive unit, 11 is a cylinder body, 111 is a first oil port, 112 is a second oil port, 113 is a first oil chamber, 114 is a second oil chamber, 12 is a cylinder rod, 121 is a first end portion, 122 is a second end portion, 13 is a flange ring, 14 is a sealing ring, 2 is a scissors unit, 21 is a knife body seat, 22 is a moving knife, 23 is a stationary knife, 24 is a key pin, and 3 is a hand-held unit. DETAILED DESCRIPTION

[0015] A hydraulic shear for bars, such as Figures 1 to 2 As shown, it includes a hydraulic drive unit 1 and a scissor unit 2 connected to one end of the hydraulic drive unit 1. The hydraulic drive unit 1 includes a cylinder body 11 provided with a first oil port 111 and a second oil port 112, a cylinder rod 12 connected to the inner cavity of the cylinder body 11, and a flange ring 13 sleeved on the outer side of the cylinder rod 12. The scissor unit 2 includes a knife body seat 21 connected to the cylinder body 11, a stationary knife 23 fixedly connected to the knife body seat 21, and a movable knife 22 arranged opposite to the stationary knife 23 and slidably connected to the knife body seat 21. The first end 121 of the cylinder rod 12 is fixedly connected to the movable knife 22 and the second end 122 thereof is slidably connected to the inner cavity. The second end 122 and the inner cavity constitute a first oil chamber 113 and a second oil chamber 114. The first oil chamber 113 and the second oil chamber 114 are respectively connected to the first oil port 111 and the second oil port 112 correspondingly, and hydraulic oil can be conducted through the high hydraulic station to move the movable knife 22. The two oil ports are respectively connected to the hydraulic oil pipes and the high hydraulic station to adjust the hydraulic pressure in the two oil chambers to drive the cylinder rod 12 to drive the moving knife 22 to move. The two oil chambers are set to use the pressure of the hydraulic oil to move the moving knife 22 to cut the bar, which not only saves manpower, but also effectively improves the cutting efficiency of the bar.

[0016] In another embodiment, the flange ring 13 and the outer periphery of the second end 122 of the shear are both provided with a sealing ring 14 to isolate the first oil chamber 113 and the second oil chamber 114. This arrangement improves the sealing of the first oil chamber 113 and the second oil chamber 114 respectively. When the first oil chamber 113 is fed with oil through the first oil port 111, the second oil chamber 114 is discharged with oil through the second oil port 112. This process realizes the retraction action of the movable knife 22 to wait for the next bar to be cut. When the second oil chamber 114 is fed with oil through the second oil port 112, the first oil chamber 113 is discharged with oil through the first oil port 111. This process realizes the advance action of the movable knife 22 to cut the bar. Improving the sealing of the two oil chambers can better control the rapid response of the movable knife 22, and further improve the cutting efficiency of the bar.

[0017] In another embodiment, the shearing device further comprises a hand-held portion 3, which is connected to the outer side of the oil cylinder body 12. The hand-held portion 3 can be set to different shapes as required, and the setting of the hand-held portion 3 improves the convenience of using the shearing device, facilitates the hand-held movement of the shearing device, and further improves the shearing efficiency of the bar.

[0018] In another embodiment, a key pin 24 is provided between the movable knife 22 and the knife body seat 21 of the shear, and the key pin 24 is clamped on the movable knife 22 and slidably connected to the knife body seat 21. In order to better control the moving direction of the movable knife 22 relative to the static knife 23, a key pin 24 is provided between the movable knife 22 and the knife body seat 21, and a key slot matching the key pin 24 is provided on the knife body seat 21. The key pin 24 can slide in the key slot to ensure the matching position of the blades between the movable knife 22 and the static knife 23, so as to more effectively cut the rod material and improve the shearing effect, that is, further improve the cutting efficiency of the rod material. Preferably, a grease layer is provided on the outer surface of the key pin 24 and the key slot, which makes it easier for the two to slide relative to each other, and the action response of the movable knife 22 is faster and smoother, further improving the cutting efficiency of the rod material.

[0019] In another embodiment, the maximum outer diameter of the shear is 145 mm, and the maximum length of the shear is 350 mm. In order to save manpower, the maximum size of the shear can be limited, and the structure is compact and light, which is more convenient for the operator to move it flexibly, and can further improve the shearing efficiency of the bar.

[0020] In another embodiment, the stationary knife 23 is clamped in the groove of the knife body seat 21 and fixedly connected to the knife body seat 21 by screws. This arrangement ensures the installation stability of the stationary knife 23, so as to cooperate with the movable knife 22 to achieve effective shearing and improve the shearing effect. Preferably, multiple screws can be used to connect to the knife body seat 21, and the stationary knife 23 can be fixed in different directions to achieve a better fixing effect.

[0021] The above implementation modes are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with the technology in this field can understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A bar hydraulic shear, characterized in that: The invention comprises a hydraulic drive unit (1) and a scissor unit (2) connected to one end of the hydraulic drive unit (1), wherein the hydraulic drive unit (1) comprises a cylinder body (11) provided with a first oil port (111) and a second oil port (112), a cylinder rod (12) connected to the inner cavity of the cylinder body (11), and a flange ring (13) sleeved on the outer side of the cylinder rod (12), and the scissor unit (2) comprises a knife body seat (21) connected to the cylinder body (11), a stationary knife (23) fixedly connected to the knife body seat (21), and a flange ring (13) arranged opposite to the stationary knife (23). The movable knife (22) is slidably connected to the knife body seat (21), the first end (121) of the cylinder rod (12) is fixedly connected to the movable knife (22) and the second end (122) is slidably connected to the inner cavity, the second end (122) and the inner cavity form a first oil chamber (113) and a second oil chamber (114), the first oil chamber (113) and the second oil chamber (114) are respectively connected to the first oil port (111) and the second oil port (112) correspondingly, and hydraulic oil can be conducted through a high hydraulic station to move the movable knife (22).

2. The bar hydraulic shear according to claim 1, characterized in that: A sealing ring (14) is provided on the outer periphery of the second end portion (122) to isolate the first oil chamber (113) from the second oil chamber (114).

3. The bar hydraulic shear according to claim 1, characterized in that: It also comprises a hand-held portion (3), wherein the hand-held portion (3) is connected to the outer side of the oil cylinder body (11).

4. The bar hydraulic shear according to claim 1, characterized in that: A key pin (24) is provided between the movable knife (22) and the knife body seat (21); the key pin (24) is clamped to the movable knife (22) and slidably connected to the knife body seat (21).

5. The bar hydraulic shear according to claim 4, characterized in that: The key pin (24) is slidably connected to the key slot of the tool body seat (21), and a lubricating grease layer is provided on the outer surfaces of the key pin (24) and the key slot.

6. The bar hydraulic shear according to claim 1, characterized in that: The maximum outer diameter of the cutter is 145 mm, and the maximum length of the cutter is 350 mm.

7. The bar hydraulic shear according to claim 1, characterized in that: The stationary knife (23) is clamped in a groove of the knife body seat (21) and is fixedly connected to the knife body seat (21) via screws.

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