CN217269514U - Press type switch device suitable for agricultural machinery - Google Patents

Abstract

The utility model discloses a be suitable for agricultural machine's push type switching device, including box, mobilizable set up the slider in the box, the push rod of pressing that is connected with the slider, rotatable set up on the box and drive by the slider and carry out wobbling rocker, apply elastic element of elastic force to the slider, set up clamping jaw subassembly on the box and set up on the slider and be used for controlling clamping jaw subassembly and switch to the dysmorphism piece of opening the state by closed state, set up the spout on the slider, set up the first round pin post in the embedding spout on the rocker. The utility model discloses be suitable for agricultural machine's push type switching device, simple structure, member are less, and the controllability is strong, and the good reliability effectively guarantees the quality of hasp, and work efficiency, range of application are wide.

Description

Press type switch device suitable for agricultural machinery

Technical Field

The utility model belongs to the technical field of agricultural machine, specifically speaking, the utility model relates to a be suitable for agricultural machine's push type switching device.

Background

With the continuous development of manufacturing technology, agricultural machinery in China develops rapidly, and various large-scale agricultural machinery is produced continuously. When the machine is used, the machine is inevitably in fault, the machine body needs to be opened to check the machine and eliminate the fault, so that the shell of the machine body needs to be ensured to be convenient to open during mechanical design, and the problem can be well solved by applying the switch. In agricultural machines, ratchet structures are often used to design switches, which require precise manufacturing techniques and positioning and installation, while the machine housing is not easily opened after failure of the switch during long-term use of the machine.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a be suitable for agricultural machine's push type switching device, the purpose is to improve the reliability.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: the pressing type switch device suitable for agricultural machinery comprises a box body, a movable sliding block arranged in the box body, a pressing push rod connected with the sliding block, a rocker which is rotatably arranged on the box body and driven by the sliding block to swing, an elastic element applying elastic acting force to the sliding block, a clamping jaw assembly arranged on the box body and a special-shaped block arranged on the sliding block and used for controlling the clamping jaw assembly to be switched from a closed state to an open state, wherein a sliding groove is formed in the sliding block, and a first pin column embedded into the sliding groove is arranged on the rocker.

The clamping jaw assembly comprises two clamping jaw bodies and rollers arranged on the clamping jaw bodies, the clamping jaw bodies are rotatably connected with the box body, the rollers contact with the special-shaped blocks, and the special-shaped blocks are inserted between the rollers arranged on the two clamping jaw bodies.

One end of the rocker is rotatably connected with the box body, the end of the rocker is located between the two clamping jaw bodies, and the first pin column is arranged at the other end of the rocker.

The pressing type switch device suitable for the agricultural machine further comprises an elastic connecting piece which is connected with the clamping jaw body and is used for controlling the clamping jaw assembly to be switched from an opening state to a closing state.

The elastic element is a cylindrical spiral spring and a compression spring, and the elastic element is clamped between the box body and the sliding block.

The rocker is located between the special-shaped block and the sliding block.

The utility model discloses be suitable for agricultural machine's push type switching device, simple structure, member are less, and the controllability is strong, and the good reliability effectively guarantees the quality of hasp, and work efficiency, range of application are wide.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is a schematic view of a push switch device for agricultural machinery according to the present invention;

FIG. 2 is a schematic view of a push rod structure;

FIG. 3 is a schematic structural view of the case;

FIG. 4 is a schematic structural view of the rocker;

FIG. 5 is a schematic view of the spring structure;

fig. 6 is a schematic structural diagram of a special-shaped block;

FIG. 7 is a schematic view of the structure of the roller;

FIG. 8 is a schematic structural view of the jaw body;

FIG. 9 is a schematic view of the structure of the elastic connection member;

FIG. 10 is a schematic view of the structure of the object to be grasped;

fig. 11 is a schematic view of a part of the pressing switch device for agricultural machinery of the present invention;

FIG. 12 is a front view of the jaw assembly;

FIG. 13 is a rear view of the jaw assembly;

FIG. 14 is a schematic view of the closing of the switching mechanism;

FIG. 15 is a view showing the path of movement of the swing end of the rocker arm in the slide slot;

FIG. 16 is a side view of the push switch device of the present invention adapted for use with agricultural machinery;

labeled in the figure as: 1. pressing the push rod; 2. a box body; 3. a rocker; 4. an elastic element; 5. a shaped block; 6. a roller; 7. a jaw body; 8. an elastic connecting member; 9. an object to be gripped.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

In the embodiments, terms indicating directions such as "upper surface", "lower surface", "directly above" and "directly below" are used to indicate relative positional relationships between components of the switchgear, and are not used to indicate absolute directions such as a vertical direction.

As shown in fig. 1 to 16, the utility model provides a be suitable for agricultural machine's push type switching device, including box 2, mobilizable slider that sets up in box 2, press push rod 1 with the slider is connected, rotatable set up on box 2 and carry out wobbling rocker 3 by the slider drive, apply elastic element 4 of elastic force to the slider, set up the clamping jaw subassembly on box 2 and set up on the slider and be used for controlling the clamping jaw subassembly and switch to the dysmorphism piece 5 of opening the state by closed state, set up the spout on the slider, set up the first round pin post 3A in the embedding spout on the rocker 3.

Specifically, as shown in fig. 1 to 5, the box 2 is installed in a mechanical housing to which the push switch device is applied, the box 2 has a hollow structure, the slider has a rectangular block structure, the slider is disposed in an inner cavity of the box 2, the inner cavity of the box 2 has a rectangular cavity, and the slider can move linearly in the inner cavity of the box 2 along a length direction of the box 2. One end of the pressing push rod 1 is fixedly connected with the sliding block at one end of the sliding block, the other end of the pressing push rod 1 penetrates through the box body 2 and then extends out of the box body 2, and the first end of the box body 2 is provided with a through hole which allows the pressing push rod 1 to penetrate, namely the shaft hole 2B. Elastic element 4 is arranged in the inner cavity of box 2, elastic element 4 is cylindrical helical spring and is compression spring, elastic element 4 is pressed from both sides between the internal face of box 2 and the slider, and elastic element 4 exerts the elastic force that makes its second end that keeps away from box 2 move towards the slider, and slider and pressing push rod 1 synchronous motion, the relative both ends on the length direction of box 2 are held to the first end of box 2 and second. The second end of the box body 2 is provided with a second pin 2E used for positioning one end of the elastic element 4, and the end part of the sliding block is provided with a third pin 1C used for positioning the other end of the elastic element 4. The one end of rocker 3 rotates with box 2 to be connected, the second end of box 2 sets up fourth round pin post 2D, the tip setting of rocker 3 lets fourth round pin post 2D male shaft hole 3B, rocker 3 constitutes revolute pair with fourth round pin post 2D on the box 2 and is connected, rocker 3 does the fixed point swing around fourth round pin post 2D, in the spout 1A that sets up on the first round pin post 3A embedding slider of the other end setting of rocker 3, make rocker 3's first round pin post 3A only can remove in spout 1A.

As shown in fig. 1, 3, 6 to 14, the jaw assembly includes two jaw bodies 7 and rollers 6 disposed on the jaw bodies 7, the jaw bodies 7 are rotatably connected to the box body 2, the rollers 6 contact the profile block 5, and the profile block 5 is inserted between the rollers 6 disposed on the two jaw bodies 7. The second end of clamping jaw body 7 and box 2 rotates to be connected, and the second end of box 2 sets up two fifth round pin post 2A, and two clamping jaw bodies 7 are symmetrical arrangement, set up on the clamping jaw body 7 and let fifth round pin post 2A male shaft hole 7A, and fourth round pin post 2D is located two fifth round pin post 2A's intermediate position departments, and the rotation center line of rocker 3 is parallel with the rotation center line of clamping jaw body 7. The roller 6 is a cylinder, and the roller 6 is rotatably arranged at one end of the clamping jaw body 7. The gyro wheel 6 sets up two altogether, and dysmorphism piece 5 is fixed to be set up in the one end of slider, and dysmorphism piece 5 and slider synchronous motion, dysmorphism piece 5 have the contact surface that contacts with gyro wheel 6, and this contact surface is the arc surface, and the contact surface sets up two and two contact surfaces and sets up for the symmetry, and two contact surfaces contact with the outer disc of the gyro wheel 6 that sets up respectively on two clamping jaw bodies 7.

As shown in fig. 13, the utility model discloses be suitable for agricultural machine's push type switching device still includes and is connected with clamping jaw body 7 and is used for controlling clamping jaw assembly and switches to the elastic connector 8 of closed state by the open mode, and elastic connector 8 is preferably the rubber band, and elastic connector 8 is used for exerting the elastic force that makes its rotation to two clamping jaw bodies 7, and the direction of rotation of two clamping jaw bodies 7 is opposite.

As shown in fig. 2, 6 to 14, the shaft hole 5A of the shaped block 5 and the fixing pin 1B of the slider are fixed by a hole, and the slider moves up and down and drives the shaped block 5 to move up and down together. The two clamping jaw bodies 7 are matched for clamping a gripped object 9, the pair of rollers 6 are arranged on pin shafts 7B1 and 7B2 on the two clamping jaw bodies 7, and circular slideways are arranged on the pin shafts 7B1 and 7B2 so as to facilitate the installation of the elastic connecting piece 8; the elastic connecting piece 8 is arranged in circular grooves on the pins 7B1 and 7B2 on the clamping jaw body 7, and has inward pulling force on the clamping jaw body 7 at any moment, so that the clamping jaw body 7 has the tendency of rotating oppositely; a moving pair is formed between the special-shaped block 5 and the pair of rollers 6, and the rollers 6 are kept in contact with the contact surface of the special-shaped block 5 under the action of the elastic connecting piece 8. When dysmorphism piece 5 was furthest apart from the second end position of box 2, the centre of a circle distance of two gyro wheels 6 was nearest this moment, in the second end process of moving of dysmorphism piece 5 towards box 2, two gyro wheels 6 were more far and more far gradually propped by dysmorphism piece 5, the distance between the centre of a circle of two gyro wheels 6 is crescent, two clamping jaw body 7 were relative rotation around the fixed round pin post this moment, clamping jaw assembly switches to the closed condition, the realization is to the locking of object, and because the position relation of dysmorphism piece 5, the power that is used for strutting the claw hand locking state that is used for of being held object 9 effect at clamping jaw body 7 end can't be realized. When the special-shaped block 5 moves towards the first end of the box body 2, the relative distance between the circle centers of the rollers 6 is continuously reduced under the action of the pulling force of the elastic connecting piece 8 and the outward tension of the gripped object 9, the opening process of the clamping jaw assembly is realized, and the clamping jaw assembly is switched to an opening state.

The movement track of the first pin 3A in the slide is shown in fig. 15, where F1 is the force applied by the outside on the push rod 1, F2 is the rebounding force applied by the resilient element 4 to the slider, and it is emphasized that the spring always has a vertically upward rebounding force during the whole mechanism movement.

FIG. 15 is a top view of the slider. Viewed from above, point a 'is to the right and above point a, point b' is to the left and above point b, point c 'is to the right and above point c, and point d is to the right and above point d'. The point a, the point a ', the point b', the point c ', the point d and the point d' are key points of the structure, which can ensure that the rocker moves along the set track. The design of the chute ensures that four conditions that the first pin 3A does not fall back to the d 'point along the a' -a-b track when the pin is at the a 'point, the pin does not fall back to the d' point along the b-b '-c track when the pin is at the b point, the pin does not fall back to the b' point along the c '-d' track when the pin is at the c 'point, and the pin does not fall back to the c' point along the a '-a' track when the pin is at the d 'point do not fall back to the c' point can not occur at the first pin 3A at the four key points of the a 'point, the b' point, the c 'point and the d' point, when the chute is designed at a point a ', a point b', a point c 'and a point d', the transverse distances from the point a ', the point b', the point c and the point d are respectively ensured to be larger than the radius of the pin column, namely, when the pin is at the points a ', b ' and c ', the central line of the pin is positioned at the right sides of the points a ', b ' and c in the transverse direction; when the pin is at d ', the center line of the pin is located at the left side of the point d in the transverse direction, so that the four points of the pins a', b, c 'and d' can move along the track as shown in fig. 15. The width of the sliding groove is only needed to enable the pin to move smoothly, and the width of the sliding groove can be set to be 1.5-2.0 times of the diameter of the first pin.

When the first pin 3A of the rocker 3 is located at point b on the runner 1A, the force F1 exerted by the outside world on the push rod 1 is zero, i.e. F2> F1, i.e. the slider has a tendency to move towards the first end of the box 2 under the action of the counterforce F2 exerted by the elastic element 4, but since one end of the rocker 3 is mounted on the pin 2D on the box 2 and the first pin 3A of the other pin is mounted in the runner 1A, the slider is in a state of equilibrium, the first pin 3A being located at point b. The shape of the chute 1A is as shown in fig. 14 and fig. 15, a point b is a first locking point position arranged in the chute 1A, after the first pin 3A moves to the point b, the sliding block stops moving under the action of elastic force applied by the elastic element, and the jaw assembly can be kept in a closed state; when downward pressure is applied to the pressing push rod, the pressing push rod pushes the sliding block to move downwards, the first pin 3A moves to the position of a point c ' from a point b along a track b-b ' -c ', after the pressure applied to the pressing push rod is removed, the sliding block moves upwards under the action of elastic force applied by the elastic element, the track of the first pin 3A in the sliding groove is c ' -d ', the point d ' is a second locking point position arranged in the sliding groove 1A, after the first pin 3A moves to the point d ', the sliding block stops moving, and the clamping jaw assembly can keep an opening state.

When the force F1> F2 acts on the push rod 1, at this time under the action of F1, the push rod 1 pushes the slider to have the tendency to move towards the second end of the case 2, because the length of the rocker 3 is unchanged, the moving track of the first pin 3A in the chute 1A is from point b to point c ', the first pin 3A moves to point c', when the force applied on the push rod 1 is removed, the slider has a tendency to move towards the first end of the box 2 under the action of the counteracting force F2, since the position of point c' is right above the position of point c, when the force F1 is removed, the first pin 3A moves in the chute 1A along only the point c '-d', and only one movement path from the point b-c '-d', which is also the movement of the slider toward the second end of the box 2. When the first pin 3A is located at the point d ', the point d ' is located at the lower left of the point d, so when a force F1 larger than the repulsive force F2 is further applied to the push rod 1, the slider moves towards the second end of the box 2 due to the point d being located at the front right of the point d ', and equivalently, the first pin 3A moves along the left side of the sliding chute to the point a ' on the sliding chute 1A, and after the force F1 is removed, the slider moves towards the first end of the box 2 due to the repulsive force F2, equivalently, the first pin 3A moves downwards from the point a ' to the point b on the sliding chute 1A, wherein, since the point a is located at the lower left of the point a ', the first pin 3A can only move along the track a ' -b when the force F1 is removed.

In summary, in combination with the operation process of the push button mechanism and the clamping jaw assembly, it is assumed that the initial state is that the first pin 3A of the rocker 3 is located at the point D 'of the sliding slot 1A, at this time, the point D' is farthest away from the fixed pin 2D, the special-shaped block 5 is mounted on the sliding block, the distance between the centers of the two rollers 6 is closest, and the clamping jaw assembly is in the open state. When the gripped object 9 is to be locked, the machine is closed firstly, the spatial position of the gripped object 9 is located in the clamping range of the jaw assembly at the switch structure position, then the push rod 1 is pressed to apply an acting force F1, the push rod 1 is pressed to push the sliding block to move towards the second end of the box body 2, the motion track equivalent to the first pin 3A on the sliding chute 1A is a point D 'to a', the motion track after the acting force F1 is removed is a point a 'to a point b, the point D' is closest to the fixed pin 2D, the special-shaped block 5 moves together in the downward motion process of the push rod 1, the distance between the circle centers of the two rollers 6 on the jaw body is the farthest, and the jaw assembly is in the closed state. When the machine needs to be opened, only the action force F1> F2 needs to be exerted on the pressing push rod 1, the sliding block can move towards the first end of the box body 2, the sliding block drives the special-shaped block 5 to move synchronously, the distance between the point D' and the fixed pin 2D is farthest, the distance between the circle centers of the two rollers 6 is nearest, and the claw assembly is in an opening state.

The push type switch device with the structure can realize the opening and closing of the control claw rod through the design of the push rod piece at the spring, the rod piece and the specific track, and realize the locking and opening functions of the machine body shell on agricultural machinery.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. As long as the method conception and the technical scheme of the utility model are adopted for various insubstantial improvements; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims (6)

1. Be suitable for agricultural machine's push type switching device, its characterized in that: the box body, the movable sliding block arranged in the box body, the pressing push rod connected with the sliding block, the rocker which is rotatably arranged on the box body and driven by the sliding block to swing, an elastic element applying elastic acting force to the sliding block, a clamping jaw assembly arranged on the box body and a special-shaped block which is arranged on the sliding block and used for controlling the clamping jaw assembly to be switched to an opening state from a closing state, a sliding groove is formed in the sliding block, and a first pin column embedded into the sliding groove is arranged on the rocker.

2. The push switch device for agricultural machines of claim 1, wherein: the clamping jaw assembly comprises two clamping jaw bodies and rollers arranged on the clamping jaw bodies, the clamping jaw bodies are rotatably connected with the box body, the rollers contact with the special-shaped blocks, and the special-shaped blocks are inserted between the rollers arranged on the two clamping jaw bodies.

3. The push switch device for agricultural machines of claim 2, wherein: one end of the rocker is rotatably connected with the box body, the end of the rocker is located between the two clamping jaw bodies, and the first pin column is arranged at the other end of the rocker.

4. The push type switch device for agricultural machinery of claim 2, wherein: the clamping jaw assembly is characterized by further comprising an elastic connecting piece which is connected with the clamping jaw body and is used for controlling the clamping jaw assembly to be switched from an opening state to a closing state.

5. The push switch device for agricultural machines as claimed in any one of claims 1 to 4, wherein: the elastic element is a cylindrical spiral spring and a compression spring, and is clamped between the box body and the sliding block.

6. The push switch device for agricultural machines as claimed in any one of claims 1 to 4, wherein: the rocker is located between the profile block and the slider.

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