Horizontal pushing type double-insurance connector

Abstract

The utility model discloses a horizontal pushing type double-insurance connector, which relates to the technical field of connectors, is used for solving the problems that the existing connector is poor in processing precision and easy to deform when being impacted, and comprises a shell, a horizontal pushing oil cylinder arranged in the shell and a movable hook, a front shaft connecting block is arranged at the top of the movable hook, the end of the piston rod is matched with the front shaft connecting block, first sliding ways are arranged on the two sides of the movable hook, first sliding grooves matched with the first sliding ways are formed in the inner side wall of the shell, a front limiting plate is arranged on the shell, and a large spring limiting block is arranged on the cylinder barrel. A large spring is arranged between the large spring limiting block and the front shaft connecting block, the rear safety block is in sliding fit with the safety block sliding way, and a groove is formed in the bottom of the rear safety block. The connector is good in structural matching performance, better in structural strength and controllable in clearance precision, and solves the problems that an existing connector is poor in machining precision and prone to deformation when impacted.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a flat-push double-safety connector. Background Art

[0002] Excavator quick connector, referred to as connector, can quickly install various accessories on the excavator to expand the use range of the excavator.

[0003] Conventional push connectors include movable hook slide type + connector housing slide type, or first slide type + connector housing slide type; these traditional connectors have defects such as insufficient processing accuracy, small force-bearing area resulting in easy deformation due to force, and high processing cost. Specifically:

[0004] Shell welding slide type, the slide's weld, spatter, welding deformation, etc. seriously affect the slide's accuracy.

[0005] The shell is welded slide type, the movable hook is semi-axle type, the matching clearance is large, there is line contact between the semi-axle and the slide, the force-bearing area is very small, and it is very easy to deform by impact.

[0006] In addition, the horizontal clamping process after welding is very costly.

[0007] Therefore, in view of the shortcomings of the above scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, a flat-push double-insurance connector is provided to solve the problem of poor processing accuracy and easy deformation of existing connectors under impact. Utility Model Content

[0008] The utility model aims to provide a flat push type double insurance connector, which is used to solve the problems of poor processing accuracy and easy deformation of the existing connectors under impact.

[0009] The technical solution of the utility model is achieved in this way:

[0010] A push-type double insurance connector comprises a housing, the housing comprises a rear end jaw, a push oil cylinder is arranged inside the housing, the push oil cylinder comprises a piston rod and a cylinder barrel, and a movable hook, a front axle connecting block is arranged on the top of the movable hook, the end of the piston rod cooperates with the front axle connecting block, the end of the piston rod is connected to the movable hook by the front axle connecting block, the movable hook is provided with a groove, a first slideway is arranged on both sides of the movable hook, a first slideway cooperating with the first slideway is arranged on the inner side wall of the housing, the first slideway is slidably connected with the first slideway,

[0011] The housing is provided with a front limit plate, the front limit plate and the rear end jaws are respectively located at the front and rear ends of the housing, and the front limit plate is used to limit the movable hook.

[0012] The cylinder is provided with a large spring stopper, a large spring is provided between the large spring stopper and the front axle connection block, a rear safety block is provided at the bottom of the rear end of the cylinder and the rear axle of the oil cylinder is connected to the rear end of the cylinder, a rear axle sliding groove matching the rear axle of the oil cylinder is provided on the inner side wall of the shell, the rear axle sliding groove is provided in the horizontal direction and the rear axle sliding groove is slidably connected with the rear axle of the oil cylinder, and an open rear axle inlet is provided at the top of the rear axle sliding groove,

[0013] The rear end of the housing is provided with a safety block slideway, the rear safety block is slidably matched with the safety block slideway, the outer end of the safety block slideway is open and the outer end of the safety block slideway is located at the top of the rear end jaws, and the bottom of the rear safety block is provided with a groove.

[0014] A guide hole is provided on the rear safety block, a guide screw is provided at the guide hole, a small spring positioning block is provided on the guide screw, a small spring is provided between the small spring positioning block and the rear safety block, the small spring positioning block is fixedly connected to the shell by a positioning plate fixing bolt, and a lock block mounting hole is provided on the shell to cooperate with the positioning plate fixing bolt.

[0015] As a preferred embodiment, the outer side of the piston end of the push cylinder is connected to the cylinder front axle, the front axle connecting block is provided with a front axle hole, the top of the front axle hole is provided with an open front axle entry channel, and the front axle hole is clamped with the cylinder front axle.

[0016] As a preferred embodiment, the front axle of the oil cylinder is horizontally placed, and a front axle anti-rotation bolt is provided at the outer end of the piston rod, and the front axle anti-rotation bolt is used to limit the front axle of the oil cylinder to prevent the front axle of the oil cylinder from rotating.

[0017] As a preferred implementation, the shell is symmetrically designed, and the first sliding groove on the inner wall of the shell is bilaterally symmetrical.

[0018] As a preferred embodiment, a baffle mounting groove with an open bottom side is provided on the inner side wall of the shell, the left and right sides of the front limit plate are provided in the baffle mounting groove, the front limit plate is slidably connected to the baffle mounting groove, and front plate fixing bolts for positioning the front limit plate are provided on both sides of the shell, the front end portion of the movable hook is flat, and the front end portion of the movable hook cooperates with the front limit plate.

[0019] As a preferred embodiment, a cylinder valve block is arranged on the top of the cylinder barrel, a front chamber oil pipe and a rear chamber oil pipe are arranged between the cylinder valve block and the cylinder barrel, a front chamber oil guide plate is arranged on the top of the cylinder barrel, and the front chamber oil pipe is connected with the front chamber oil guide plate.

[0020] As a preferred implementation, a hydraulically controlled one-way valve is provided in the oil cylinder valve block.

[0021] As a preferred embodiment, the shell includes a rear plate positioning groove located on the inner side of the rear end jaws, a rear plate is arranged at the rear plate positioning groove, and a locking block mounting hole matching with the positioning plate fixing bolt is arranged on the rear plate.

[0022] The beneficial effects of the utility model are:

[0023] The cooperation between the shell and the internal parts of the utility model is specially designed to address the defects of the prior art. The structure has good coordination and a more reasonable processing sequence. It saves steps compared to the commonly used slide-type push connector, has better structural strength, controllable gap accuracy, and lower production cost, thus solving the problem of poor processing accuracy and easy deformation of the prior art connectors under impact.

[0024] The assembly mode of this solution can ensure stable cooperation and prevent falling off at all points of the sliding connection, and the front and rear limit switches can ensure that the connector safety structure can be opened and closed in an orderly manner, which is more reliable than conventional safety devices.

[0025] The groove setting of the rear safety block can effectively prevent the rigid movable mechanism from being touched, and prevent the connector from being subjected to external force on the safety block after long-term operation and wear, thereby preventing the safety block from being vibrated or impacted and extending its service life.

[0026] The utility model is made of conventional parts without high-cost customized parts. The overall processing cost and safety effect are better than similar products of the same level on the market, and the cost performance is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0029] Figure 2 The structure of the embodiment of the utility model is shown in FIG. Figure 2 ;

[0030] Figure 3 The structure of the embodiment of the utility model is shown in FIG. Figure 3 ;

[0031] Figure 4 It is a schematic diagram of the local structure of the utility model Figure 1 ;

[0032] Figure 5 It is a schematic diagram of the local structure of the utility model Figure 2 ;

[0033] Figure 6 It is a three-dimensional structural schematic diagram of the movable hook of the utility model;

[0034] Figure 7 The three-dimensional structure of the housing of the utility model is shown in FIG. Figure 1 ;

[0035] Figure 8 The three-dimensional structure of the housing of the utility model is shown in FIG. Figure 2 ;

[0036] Fig. 9 The structure of the utility model in use is shown in FIG. Figure 1 ;

[0037] Fig.10 The structure of the utility model in use is shown in FIG. Figure 2 ;

[0038] Fig.11 The structure of the utility model in use is shown in FIG. Figure 3 ;

[0039] Fig.12 for Figure 5 Schematic diagram of the usage status;

[0040] Fig.13 for Fig.12 Schematic diagram of the enlarged structure at point A in the middle.

[0041] In the figure, 1-housing; 2-movable hook; 3-rear end jaws; 4-front plate fixing bolts; 5-front limit plate; 6-cylinder front axle; 7-front axle anti-rotation bolts; 8-push cylinder; 9-front cavity oil guide plate; 10-cylinder barrel; 11-front cavity oil pipe; 12-cylinder valve block; 13-rear cavity oil pipe; 14-cylinder rear axle; 15-large spring limit block; 16-guide hole; 17-groove; 18-rear safety block; 19-large spring; 20-small spring; 21-front axle connecting block; 2 2-front end; 23-front axle entrance channel; 24-front axle hole; 25-first slide; 26-groove; 27-baffle mounting groove; 28-first slide; 29-inner wall; 30-rear plate; 31-rear plate positioning groove; 32-lock block mounting hole; 33-rear axle entrance; 34-rear axle sliding groove; 35-front positioning plate; 36-piston rod; 37-guide screw; 38-small spring positioning block; 39-positioning plate fixing bolt; 40-second slide; 41-second slide. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0045] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] See 1~ Fig.13A push-type double insurance connector includes a housing 1, the housing 1 includes a rear end jaw 3, a push cylinder 8 is arranged inside the housing 1, the push cylinder 8 includes a piston rod 36 and a cylinder 10, and includes a movable hook 2, a front axle connecting block 21 is arranged on the top of the movable hook 2, the end of the piston rod 36 matches with the front axle connecting block 21, the end of the piston rod 36 is connected to the movable hook 2 by the front axle connecting block 21, the movable hook 2 is provided with a groove 26, and the first slide 25 is arranged on both sides of the movable hook 2, and the first slide 28 matching with the first slide 25 is arranged on the inner side wall 29 of the housing 1, and the first slide 25 is slidably connected with the first slide 28,

[0047] The housing 1 is provided with a front limit plate 5, which is located at the front and rear ends of the housing 1 with the rear jaws 3, and the front limit plate 5 is used to limit the movable hook 2.

[0048] A large spring 19 stopper 15 is provided on the cylinder 10, and a large spring 19 is provided between the large spring 19 stopper 15 and the front axle connecting block 21. A rear safety block 18 is provided at the bottom of the rear end of the cylinder 10, and the rear end of the cylinder 10 is connected to the oil cylinder rear axle 14. A rear axle sliding groove 34 matching the oil cylinder rear axle 14 is provided on the inner side wall 29 of the housing 1. The rear axle sliding groove 34 is arranged in the horizontal direction and the rear axle sliding groove 34 is slidably connected to the oil cylinder rear axle 14. An open rear axle inlet 33 is provided at the top of the rear axle sliding groove 34.

[0049] The rear end of the housing 1 is provided with a safety block slideway, and the rear safety block 18 is slidably matched with the safety block slideway. The outer end of the safety block slideway is open and located at the top of the rear end jaws 3. The bottom of the rear safety block 18 is provided with a groove 17.

[0050] A guide hole 16 is provided on the rear safety block 18, a guide screw 37 is provided at the guide hole 16, a small spring positioning block 38 is provided on the guide screw 37, a small spring 20 is provided between the small spring positioning block 38 and the rear safety block 18, the small spring positioning block 38 is fixedly connected to the housing 1 by a positioning plate fixing bolt 39, and a lock block mounting hole 32 is provided on the housing 1 to cooperate with the positioning plate fixing bolt 39.

[0051] The outer side of the piston end of the push cylinder is connected to the cylinder front axle 6, the front axle connecting block 21 is provided with a front axle hole 24, the top of the front axle hole 24 is provided with an open front axle entry channel 23, and the front axle hole 24 is clamped with the cylinder front axle 6.

[0052] The front axle 6 of the oil cylinder is placed horizontally, and a front axle anti-rotation bolt 7 is provided at the outer end of the piston rod 36. The front axle anti-rotation bolt 7 is used to limit the front axle 6 of the oil cylinder to prevent the front axle 6 of the oil cylinder from rotating.

[0053] The housing 1 is symmetrically designed, and the first sliding groove 28 on the inner side wall 29 of the housing 1 is bilaterally symmetrical.

[0054] A baffle mounting groove 27 with an open bottom side is provided on the inner side wall 29 of the shell 1, and the left and right sides of the front limit plate 5 are arranged in the baffle mounting groove 27. The front limit plate 5 is slidably connected with the baffle mounting groove 27. Front plate fixing bolts 4 for positioning the front limit plate 5 are provided on both sides of the shell 1. The front end portion 22 of the movable hook 2 is flat, and the front end portion 22 of the movable hook 2 cooperates with the front limit plate 5.

[0055] A cylinder valve block 12 is arranged on the top of the cylinder barrel 10, a front chamber oil pipe 11 and a rear chamber oil pipe 13 are arranged between the cylinder valve block 12 and the cylinder barrel 10, a front chamber oil guide plate 9 is arranged on the top of the cylinder barrel 10, and the front chamber oil pipe 11 is connected to the front chamber oil guide plate 9.

[0056] A hydraulically controlled one-way valve is arranged in the oil cylinder valve block 12 .

[0057] The housing 1 includes a rear plate positioning groove 31 located at the inner side of the rear end jaw 3 , a rear plate 30 is arranged at the rear plate positioning groove 31 , and a locking block mounting hole 32 matched with the positioning plate fixing bolt 39 is arranged on the rear plate 30 .

[0058] Shown Figure 9-11 This is the working state of the push connector, at which time the rear safety block 18 is in effect. In this state, the small spring 20 is released, and its front end is blocked by the small spring positioning block 38, and the rear end drives the push cylinder 8 along the rear axle sliding groove 34 to the end. The rear safety block 18 is integrated with the push cylinder 8, and the rear safety block 18 extends out of the housing 1. After reaching the limit, the distance between the rear safety block 18 and the rear end of the part 3 is smaller than the diameter of the connecting shaft here, so it can prevent falling off. In this state, the rear safety works. In this state, the large spring 19 is released, giving the movable hook 2 a forward thrust to prevent the cylinder piston rod 36 from breaking or the oil seal from being damaged. After the pressure is released, the movable hook 2 retracts, achieving the insurance effect of the front axle clamping part.

[0059] See attached Figure 7 , 8 It can be seen that the housing 1 is a bilaterally symmetrical structure. By symmetrically processing the plates of various grooves 17, positioning and welding are performed according to the rear plate positioning groove 31, the baffle mounting groove 27 and the front positioning plate 35, the spacing and symmetry of the left and right grooves can be reasonably controlled, the matching accuracy is high, and the manufacturing process is simple. This structural style is suitable for the process of first processing and then welding, which can reasonably save the cost of processing the inner groove and the inner side after welding. The structure ensures the strength requirements of the connector housing 1 through the reasonable arrangement of various slide grooves and protrusions, reduces the overall equipment size, and the special processing method of the shape of the rear end jaws 3 enables it to carry two shaft diameters of accessories.

[0060] See attached Figure 6, 7 It can be seen that the second slide 40 is provided at the bottom of the first slide 25, and the second slide 41 is provided at the bottom of the first slide 28. The second slide 41 cooperates with the second slide 40 and is slidably connected. The movable hook 2 is a bilaterally symmetrical structure. After welding, the two sides are machined to open grooves and process planes. The first slide 25 slides in the first slide 28, and the second slide 40 slides on the second slide 40. The upper and lower double-layer track structure can ensure that the left and right gaps and the upper and lower gaps between the movable hook 2 and the housing 1 are very small, the contact area is large, the local pressure is reduced, deformation is prevented, and the service life is extended.

[0061] A valve block is installed above the cylinder barrel 10 of the push cylinder 8. A hydraulically controlled one-way valve is installed in the valve block to prevent the oil in the rodless chamber of the cylinder from flowing back, thereby maintaining pressure and preventing the piston rod 36 from retracting. A front cavity oil guide plate 9 is welded on the cylinder barrel 10 to replace part of the front oil pipe here. The hydraulic oil flows to the front cavity through the inner oil channel of the front cavity oil guide plate 9, and cooperates with the large spring 19 on the push cylinder 8. The limit block 15 is used to install the large spring 19 with a conventional circular cross-section. A rear safety block 18 is welded on the cylinder barrel 10, and the rear safety block 18 is integrated with the cylinder barrel 10. The rear safety block 18 is opened and closed by sliding the rear shaft 14 of the cylinder back and forth. Here, it can be based on Figure 1-3 correspond Figure 9-11 To understand, Figure 1-3 correspond Figure 9-11 What are shown are schematic diagrams of the structure in the normal state and the use state (after the safety block 18 is activated), and they are one-to-one corresponding.

[0062] The front axle anti-rotation bolt 7 is used to fix the oil cylinder front axle 6 to prevent rotation and left and right sliding.

[0063] The rear safety block 18 is a special-shaped structure, with left and right limiters on the left and right sides to limit the left and right sliding of the oil cylinder. An anti-wear groove 17 is provided at the bottom, which can effectively prevent the rigid connection movable structure from being touched by foreign objects and affected by external forces, thereby damaging the entire connection structure components. When the rear end jaws 3 are worn, the attachment shaft changes from the initial state to the second state. In this state, the rear safety block 18 has no contact with the attachment shaft and is not affected by external forces. It can effectively extend the service life of the safety block and the auxiliary connection structure. Two guide holes 16 are provided in the middle of the rear safety block 18. The small spring 20 retracts and contracts in the guide hole 16. The other end of the guide hole 16 is blocked, and the small spring 20 can apply elastic force to the rear safety block 18. At the same time, the guide hole 16 is in a semi-closed state with respect to the small spring 20, preventing the entire spring from being exposed to the outside, and playing a certain role in rust prevention, dust prevention and splash prevention.

[0064] Figure 1-3 It reflects the retracted state, that is, the normal state. In this state, the oil cylinder retracts to the shortest position, the large spring 19 is compressed, the small spring 20 is compressed, and the rear end of the movable hook 2 is limited by the rear end of the first slide groove 28 of the housing 1, and the retraction stops. The rear end here is Figure 2 At this time, the rear axle 14 of the oil cylinder slides forward in the rear axle sliding groove 34 of the housing 1, and stops forward when the boss below the rear safety block 18 is blocked by the rear plate 30 of the housing 1. In this state, the rear safety is retracted into the housing 1, and the front and rear axles of the complete tool can be separated from the connector.

[0065] The process of loading accessories: put the rear axle of the accessories into the rear end of the housing 1, and push the oil cylinder 8 to extend. At this time, the large spring 19 and the small spring 20 are in the minimum compression state, and the distance between the movable hook 2 and the rear axle 14 of the oil cylinder becomes larger. In an ideal state, both the large and small springs 20 begin to release, and the small spring 20 pushes the rear safety block 18 to extend out of the housing 1 first. When the rear axle 14 of the oil cylinder contacts the end of the rear axle slot of the housing 1, the rear safety block 18 extends to the maximum limit and stops, and the rear safety takes effect; continue to push and extend, the movable hook 2 begins to extend forward along the first slide groove 28 of the housing 1, and after loading the front axle, stops running, the large spring 19 is still in a certain compression state, and the front safety takes effect. The loading of accessories is realized.

[0066] In order to minimize the assembly space, reduce the size of the entire device, and increase the thickness and strength of the shell 1 and the movable hook 2, the assembly needs to be carried out in sequence. Assembly sequence: Figure 4 First install the front axle 6 and the rear axle 14 of the oil cylinder, then install the large spring 19, and shrink the oil cylinder to the shortest state. Tilt the rear part of the oil cylinder into the corresponding position of the housing 1. At this time, the rear axle 14 of the oil cylinder enters the rear axle sliding groove 34 from the rear axle entrance 33, and this is the case on both the left and right sides. The movable hook 2 is slid into the front of the housing 1, and the rear axle 14 of the oil cylinder is pushed backward along the sliding direction of the slideway, while pushing, the angle between the oil cylinder and the housing 1 is rotated, and pushed to the end. The front axle 6 of the oil cylinder adjusts the flat surface to a vertical state and is installed in the front axle hole 24. As shown Fig.10 , turn the front axle of the movable hook 2, the flat surface is parallel to the slideway, install the front axle anti-rotation screw, tighten and lock. At this time, the main components are installed, and other small components can be installed later. Tighten, lubricate, run and test, and the installation is complete.

[0067] The beneficial effects of the utility model are:

[0068] The cooperation between the shell and the internal parts of the utility model is specially designed to address the defects of the prior art. It has good structural cooperation and a more reasonable processing sequence. It saves steps compared to the commonly used slide-type push connector, has better structural strength, controllable gap accuracy, and lower production cost.

[0069] The assembly mode of this solution can ensure stable cooperation and prevent falling off at all points of the sliding connection, and the front and rear limit switches can ensure that the connector safety structure can be opened and closed in an orderly manner, which is more reliable than conventional safety devices.

[0070] The groove setting of the rear safety block can effectively prevent the rigid movable mechanism from being touched, and prevent the connector from being subjected to external force on the safety block after long-term operation and wear, thereby preventing the safety block from being vibrated or impacted and extending its service life.

[0071] The utility model is made of conventional parts without high-cost customized parts. The overall processing cost and safety effect are better than similar products of the same level on the market, and the cost performance is high.

[0072] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the utility model.

Claims

1. A push-type double insurance connector, comprising a housing, the housing comprising a rear end jaw, a push cylinder disposed inside the housing, the push cylinder comprising a piston rod and a cylinder barrel, characterized in that: The invention comprises a movable hook, a front axle connecting block is arranged on the top of the movable hook, the end of the piston rod matches with the front axle connecting block, the end of the piston rod is connected to the movable hook by the front axle connecting block, the movable hook is provided with a groove, a first slideway is arranged on both sides of the movable hook, a first slideway matching with the first slideway is arranged on the inner side wall of the shell, the first slideway is connected to the first slideway in a sliding manner, The housing is provided with a front limit plate, the front limit plate and the rear end jaws are respectively located at the front and rear ends of the housing, and the front limit plate is used to limit the movable hook. The cylinder is provided with a large spring stopper, a large spring is provided between the large spring stopper and the front axle connection block, a rear safety block is provided at the bottom of the rear end of the cylinder and the rear axle of the oil cylinder is connected to the rear end of the cylinder, a rear axle sliding groove matching the rear axle of the oil cylinder is provided on the inner side wall of the shell, the rear axle sliding groove is provided in the horizontal direction and the rear axle sliding groove is slidably connected with the rear axle of the oil cylinder, and an open rear axle inlet is provided at the top of the rear axle sliding groove, The rear end of the housing is provided with a safety block slideway, the rear safety block is slidably matched with the safety block slideway, the outer end of the safety block slideway is open and the outer end of the safety block slideway is located at the top of the rear end jaws, and the bottom of the rear safety block is provided with a groove. The rear safety block is provided with a guide hole, a guide screw is provided at the guide hole, a small spring positioning block is provided on the guide screw, a small spring is provided between the small spring positioning block and the rear safety block, and the small spring positioning block is fixedly connected to the housing by a positioning plate fixing bolt.

2. A push-to-type double insurance connector according to claim 1, characterized in that: The outer side of the piston end of the push cylinder is connected with the cylinder front axle, the front axle connecting block is provided with a front axle hole, the top of the front axle hole is provided with an open front axle entry channel, and the front axle hole is clamped with the cylinder front axle.

3. A push-to-type double insurance connector according to claim 2, characterized in that: The front axle of the oil cylinder is placed horizontally, and a front axle anti-rotation bolt is arranged at the outer end of the piston rod, and the front axle anti-rotation bolt is used to limit the front axle of the oil cylinder.

4. A push-to-type double insurance connector according to claim 1, characterized in that: The shell is symmetrically designed, and the first sliding groove on the inner side wall of the shell is bilaterally symmetrical.

5. A push-to-type double insurance connector according to claim 1, characterized in that: A baffle mounting groove with an open bottom is provided on the inner side wall of the shell, the left and right sides of the front limit plate are provided in the baffle mounting groove, the front limit plate is slidably connected to the baffle mounting groove, and front plate fixing bolts for positioning the front limit plate are provided on both sides of the shell, the front end portion of the movable hook is flat, and the front end portion of the movable hook cooperates with the front limit plate.

6. A push-to-type double insurance connector according to claim 1, characterized in that: A cylinder valve block is arranged on the top of the cylinder barrel, a front cavity oil pipe and a rear cavity oil pipe are arranged between the cylinder valve block and the cylinder barrel, a front cavity oil guide plate is arranged on the top of the cylinder barrel, and the front cavity oil pipe is connected with the front cavity oil guide plate.

7. A push-to-type double insurance connector according to claim 6, characterized in that: A hydraulically controlled one-way valve is arranged in the oil cylinder valve block.

8. The flat push double insurance connector according to claim 1, characterized in that: The shell comprises a rear plate positioning groove located at the inner side of the rear end jaws, a rear plate is arranged at the rear plate positioning groove, and a locking block mounting hole matched with the positioning plate fixing bolt is arranged on the rear plate.

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