Hydraulic riveting device

Abstract

The utility model is suitable for the technical field of hydraulic rivets, and provides a hydraulic rivet device which comprises a shell, a main oil cavity, an auxiliary oil cavity, an oil pump, an oil pump and a hydraulic pump, wherein the main oil cavity and the auxiliary oil cavity are communicated with each other; the driving piston is arranged in the main oil cavity in a sliding mode, a screw rod in threaded connection with the shell is rotationally arranged on the driving piston, the screw rod penetrates out of the shell, an auxiliary head is elastically connected to the driving piston, the auxiliary head is connected with an annular plate through a plurality of connecting rods, a protruding piece is arranged on the side wall of the shell in a sliding mode, and an indicating plate is arranged on the protruding piece. A marking strip matched with the indicating plate is arranged on the shell; the driven piston is arranged in the auxiliary oil cavity in a sliding mode, a plunger rod penetrating out of the shell is connected to the driven piston, and a first spring is arranged between the driven piston and the side wall of the shell. Therefore, the device not only can assist a user in judging whether hydraulic oil is missing or not, improves the use safety, but also can be suitable for different types of rivets, meets the requirements of various use scenes, and expands the application range of the device.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic riveting technology, and in particular to a hydraulic riveting device. Background Technology

[0002] A rivet is a nail-shaped object with a head at one end. In riveting, it uses its own deformation or interference fit to connect the riveted parts. There are many types of rivets, and they are not limited to any particular form.

[0003] Various hydraulic riveting devices exist in the prior art, such as the hydraulic riveting gun disclosed in CN210188372U, which includes a C-shaped arm, a hydraulic cylinder, a pad, and an elastic connector. The hydraulic cylinder is located at the upper end of one side of the notch of the C-shaped arm, and the outer wall of the cylinder body is fixedly connected to the side of the C-shaped arm. A pressure head is provided at the end of the piston rod of the hydraulic cylinder, and one end of the pressure head is fixedly connected to the piston rod. The pad is located at the lower end of one side of the notch of the C-shaped arm, and the pad faces the pressure head directly. The elastic connector is located above the C-shaped arm, and one end of it is detachably connected to the top of the C-shaped arm. A lifting lug is installed at the upper end of the C-shaped arm, and one end of the elastic connector is detachably connected to the lifting lug. It can install rivets hydraulically. However, the above device lacks a mechanism to help the user judge whether the hydraulic oil is low or leaking, which is dangerous during use and still inconvenient.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide a hydraulic riveting device that can assist users in judging whether the hydraulic oil is low or leaking, thereby improving safety. It is also applicable to different types of rivets, meeting the needs of various usage scenarios and expanding the device's scope of application.

[0006] To achieve the above objectives, this utility model provides a hydraulic riveting device, comprising: a housing having a main oil chamber and a secondary oil chamber that are interconnected; an active piston slidably disposed in the main oil chamber, a screw threadedly connected to the housing and extending out of the housing is rotatably disposed on the active piston, an auxiliary head is elastically connected to the active piston, the auxiliary head is connected to an annular plate via several connecting rods, a protrusion is slidably disposed on the side wall of the housing, an indicator plate is disposed on the protrusion, and a marking strip cooperating with the indicator plate is disposed on the housing; and a driven piston slidably disposed in the secondary oil chamber, a plunger rod extending out of the housing is connected to the driven piston, and a first spring is disposed between the driven piston and the side wall of the housing.

[0007] According to the hydraulic riveting device of this utility model, the active piston has a hollow cavity inside, an end plate is provided inside the hollow cavity, the end plate is connected to an auxiliary head and several connecting rods, and a second spring is provided between the end plate and the side wall of the hollow cavity.

[0008] According to the hydraulic riveting device of this utility model, a groove is provided on the side wall of the main oil chamber, the protrusion is slidably disposed in the groove, a third spring is provided between the protrusion and the side wall of the groove, when the third spring is in the natural state, the protrusion is located at the end of the groove near the driven piston, and the groove, the protrusion and the indicator plate are all located on the side of the active piston away from the driven piston.

[0009] According to the hydraulic riveting device of this utility model, a receiving groove is provided on one end side wall of the plunger rod, and a plurality of locking blocks are elastically connected to the side wall of the receiving groove. The locking blocks are all connected to the mating parts by connecting ropes, and the mating parts are slidably disposed on the plunger rod.

[0010] According to the hydraulic riveting device of this utility model, the side wall of the receiving groove is provided with a plurality of clearance grooves, the locking block is slidably disposed in the clearance groove, and a fourth spring is provided between the locking block and the side wall of the clearance groove.

[0011] According to the hydraulic riveting device of this utility model, the clearance grooves are all connected to the rope grooves, the rope grooves are all provided on the plunger rod, the connecting ropes are all located in the rope grooves, the plunger rod is provided with a guide groove that cooperates with the mating parts, when the fourth spring is in the natural state, the locking block extends out of the clearance groove, and the mating parts are located at the end of the guide groove away from the driven piston.

[0012] The purpose of this utility model is to provide a hydraulic riveting device, which has the following advantages:

[0013] 1. By setting up auxiliary heads and other structures, the position of the indicator plate can be automatically adjusted according to the hydraulic oil volume inside the main oil chamber and the auxiliary oil chamber, thereby helping the user to judge whether there is a shortage or leakage of hydraulic oil and improving the safety of the device.

[0014] 2. By setting up structures such as locking blocks, the rivets can be limited to prevent them from falling off on their own, which can meet a variety of different application scenarios. It is also suitable for rivets that cannot be attracted by magnetism, thus expanding the applicability of the device and making it easy to use.

[0015] In summary, the beneficial effects of this utility model are: it can assist users in judging whether hydraulic oil is low or leaking, thus improving safety; it can also be applied to different types of rivets, meeting the needs of various usage scenarios and expanding the applicability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front sectional view of the present invention;

[0018] Figure 3 yes Figure 2 Enlarged schematic diagram of part A of the structure;

[0019] Figure 4 This is a schematic diagram of another embodiment of the present invention;

[0020] In the diagram: 1-Housing, 11-Partition, 12-Inlet / outlet, 13-Main oil chamber, 14-Secondary oil chamber, 2-Bolt, 3-Active piston, 31-O-ring, 32-Y-ring, 4-Auxiliary head, 41-End plate, 42-Connecting rod, 43-Annular plate, 5-Indicator plate, 51-Protrusion, 6-Plunger rod, 61-Driven piston, 7-Clamping block, 71-Connecting rope, 72-Guide ring, 8-Matching part. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0022] See Figures 1-4 This utility model provides a hydraulic riveting device, comprising:

[0023] The housing 1 is hollow inside, and a partition 11 is fixedly connected to the middle of the housing 1. The partition 11 divides the interior of the housing 1 into a main oil chamber 13 and a secondary oil chamber 14. The partition 11 is provided with an oil inlet and outlet port 12 that connects the main oil chamber 13 and the secondary oil chamber 14. The side wall of the main oil chamber 13 is provided with an oil injection hole and an exhaust hole (both the oil injection hole and the exhaust hole are provided with a one-way valve to prevent hydraulic oil from flowing out).

[0024] The active piston 3 is slidably disposed in the main oil chamber 13. A bolt 2 is rotatably connected to one side wall of the active piston 3. One end of the bolt 2 protrudes from the housing 1 and is threadedly connected to the housing 1. When the bolt 2 is rotated, it can drive the active piston 3 to move in the main oil chamber 13, thereby driving the hydraulic oil to flow.

[0025] The driven piston 61 is slidably disposed in the auxiliary oil chamber 14. A plunger rod 6 that extends out of the auxiliary oil chamber 14 is fixedly connected to the side wall of the driven piston 61 away from the driving piston 3. The plunger rod 6 is provided with a receiving groove that cooperates with a rivet.

[0026] An auxiliary head 4 is slidably mounted on the side wall of the active piston 3 away from the bolt 2. The active piston 3 has a hollow cavity inside. After the auxiliary head 4 passes through the hollow cavity, it is fixedly connected to the end plate 41. Several connecting rods 42 are fixedly connected to the side wall of the end plate 41 away from the auxiliary head 4. The connecting rods 42 pass through the hollow cavity and are fixedly connected to the annular plate 43. The annular plate 43 is located on the outer ring of the bolt 2. A groove is provided on the side wall of the main oil chamber 13. A protrusion 5 is slidably mounted at the groove. The protrusion 5 is fixedly connected to the indicator plate 5. The groove, the protrusion 5 and the indicator plate 5 are all located on the side of the active piston 3 away from the driven piston 61, so that the hydraulic oil will not flow out at the groove. A mark strip is provided on the side wall of the housing 1 to cooperate with the indicator plate 5. Through the cooperation of the indicator plate 5 and the mark strip, the user can judge whether there is a shortage of hydraulic oil.

[0027] See Figures 1-4 Preferably, a first spring is provided between the driven piston 61 and the side wall of the housing 1 away from the bolt 2. The first spring is sleeved on the outside of the plunger rod 6. A second spring is provided between the end plate 41 and the side wall of the hollow cavity. When the second spring is in its natural state, the end plate 41 is located at the end of the hollow cavity near the bolt 2.

[0028] See Figures 1-4 Preferably, O-rings and Y-rings are provided on the side walls of both the driving piston 3 and the driven piston 61. The O-rings and Y-rings can improve the sealing performance of the driving piston 3 and the driven piston 61 and ensure a good sealing effect.

[0029] See Figures 1-4 Preferably, a third spring is provided between the protrusion 51 and the side wall of the slide groove. When the third spring is in its natural state, the protrusion 51 is located at the end of the slide groove near the driven piston 61.

[0030] See Figures 1-4 In another embodiment of this utility model, the side wall of the receiving groove is provided with several clearance grooves, and a locking block 7 is slidably provided in each clearance groove. A fourth spring is provided between the locking block 7 and the side wall of the clearance groove. When the fourth spring is in its natural state, the locking block 7 extends out at the clearance groove and can position the rivet. The clearance grooves are all connected to the rope grooves, and the rope grooves are all provided on the plunger rod 6. A connecting rope 71 that passes through the rope groove is fixedly connected to the locking block 7. The other end of the connecting rope 71 is fixedly connected to the mating part 8. The plunger rod 6 is provided with a guide groove that mates with the mating part 8. When the plunger rod 6 moves synchronously with the driven piston 61 until the mating part 8 mates with the end side wall of the housing 1, it can drive the locking block 7 to retract into the clearance groove, thereby releasing the rivet. A guide ring 72 that mates with the connecting rope 71 is fixedly provided in the clearance groove.

[0031] See Figures 1-4 Preferably, the sliding connections and rotating connections in this invention are all sealed connections, which can reduce the risk of hydraulic oil leakage.

[0032] In the implementation of this utility model: the user first places the rivet in the receiving groove, and several locking blocks 7 fix the rivet. Then the user manually (or uses other driving mechanisms) rotates the bolt 2. The bolt 2 drives the active piston 3 to move towards the plunger rod 6. Under the action of hydraulic oil, the driven piston 61 moves synchronously, driving the plunger rod 6 to move and drive the rivet into the predetermined position. When the mating part 8 abuts against the end side wall of the housing 1, it drives several locking blocks 7 to retract. At this time, the connection of the rivet has been completed, and the rivet can smoothly disengage from the plunger rod 6. Then the bolt 2 is reversed to reset the active piston 3 and the driven piston 61. If there is a hydraulic oil leak at this time (i.e., insufficient hydraulic oil in the main oil chamber 13 and the auxiliary oil chamber 14), the end plate 41 cannot return to the end of the hollow cavity away from the bolt 2, so that the indicator plate 5 cannot correspond to the indicator strip, thus prompting the user that the hydraulic oil is leaking.

[0033] This utility model provides a hydraulic riveting device, which has the following advantages:

[0034] 1. By setting up auxiliary heads and other structures, the position of the indicator plate can be automatically adjusted according to the hydraulic oil volume inside the main oil chamber and the auxiliary oil chamber, thereby helping the user to judge whether there is a shortage or leakage of hydraulic oil and improving the safety of the device.

[0035] 2. By setting up structures such as locking blocks, the rivets can be limited to prevent them from falling off on their own, which can meet a variety of different application scenarios. It is also suitable for rivets that cannot be attracted by magnetism, thus expanding the applicability of the device and making it easy to use.

[0036] In summary, the beneficial effects of this utility model are: it can assist users in judging whether hydraulic oil is low or leaking, thus improving safety; it can also be applied to different types of rivets, meeting the needs of various usage scenarios and expanding the applicability of the device.

[0037] Of course, there may be many other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A hydraulic riveter characterized by comprising: The utility model provides a kind of oil pump, comprising: Shell, which is internally provided with a main oil cavity and a secondary oil cavity in communication with each other; A driving piston is slidably arranged in the main oil cavity, and a screw rod is rotatably arranged on the driving piston and threadedly connected with the shell. The screw rod penetrates the shell. An auxiliary head is elastically connected to the driving piston. The auxiliary head is connected to an annular plate through a plurality of connecting rods. A protruding piece is slidably arranged on the side wall of the shell. An indicator plate is arranged on the protruding piece. A mark strip is arranged on the shell and cooperates with the indicator plate. A driven piston is slidably arranged in the secondary oil cavity. A plunger rod penetrates the shell and is connected to the driven piston. A first spring is arranged between the driven piston and the side wall of the shell.

2. The hydraulic riveting device of claim 1, wherein, The driving piston is internally provided with a hollow cavity. An end plate is arranged in the hollow cavity. The end plate is connected to the auxiliary head and the plurality of connecting rods. A second spring is arranged between the end plate and the side wall of the hollow cavity.

3. The hydraulic riveting device of claim 1, wherein, A sliding groove is arranged on the side wall of the main oil cavity. The protruding piece is slidably arranged in the sliding groove. A third spring is arranged between the protruding piece and the side wall of the sliding groove. When the third spring is in a natural state, the protruding piece is located at one end of the sliding groove close to the driven piston. The sliding groove, the protruding piece, and the indicator plate are all located on the side of the driving piston away from the driven piston.

4. The hydraulic riveting device of claim 1, wherein, An accommodating groove is arranged on the side wall of one end of the plunger rod. A plurality of clamping blocks are elastically connected to the side wall of the accommodating groove. The clamping blocks are all connected to a cooperating piece through a connecting rope. The cooperating piece is slidably arranged on the plunger rod.

5. The hydraulic riveting device of claim 4, wherein, A plurality of avoiding grooves are arranged on the side wall of the accommodating groove. The clamping blocks are slidably arranged in the avoiding grooves. A fourth spring is arranged between the clamping blocks and the side wall of the avoiding grooves.

6. The hydraulic riveting device of claim 5, wherein, The avoiding grooves are all in communication with rope grooves. The rope grooves are all arranged on the plunger rod. The connecting ropes are all located in the rope grooves. A guide groove is arranged on the plunger rod and cooperates with the cooperating piece. When the fourth spring is in a natural state, the clamping blocks protrude out of the avoiding grooves. The cooperating piece is located at one end of the guide groove away from the driven piston.

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