阅读说明：本技术 一种防撞限位装置 (Anti-collision limiting device ) 是由 周志远 张继通 孙中进 张程 于 2021-08-27 设计创作，主要内容包括：本发明公开了一种防撞限位装置,包括：接触开关,所述接触开关安装在底板上,所述接触开关上设有用于触发并使其产生接触信号的摆动件；缓冲器,所述缓冲器包括接触杆,所述接触杆滑动安装在所述底板上,所述接触杆上连接有用于缓冲接触杆所受撞击力的弹性件,接触杆上还连接有驱动件,所述驱动件上设有与接触杆滑动方向平行的驱动面,驱动面靠近所述摆动件的一端设有与驱动面平滑连接的倒斜面,所述接触杆受到运动机器的撞击力后,所述接触杆带动所述驱动件同步移动,所述驱动件依次通过倒斜面和驱动面挤压所述摆动件,使得接触开关产生制动所述机器的接触信号。本发明采用机械式的接触开关和防撞器相结合的防护形式,使用成本低且安全可靠。(The invention discloses an anti-collision limiting device, which comprises: the contact switch is arranged on the bottom plate, and a swinging piece used for triggering and enabling the contact switch to generate a contact signal is arranged on the contact switch; the buffer, the buffer includes the contact lever, contact lever slidable mounting is in on the bottom plate, be connected with the elastic component that is used for buffering the impact that the contact lever receives on the contact lever, still be connected with the driving piece on the contact lever, be equipped with the driving surface parallel with contact lever slip direction on the driving piece, the driving surface is close to the one end of oscillating piece is equipped with the bevel face of falling with driving surface smooth connection, the contact lever receives behind the impact of motion machine, the contact lever drives the driving piece synchronous motion, the driving piece loops through bevel face of falling and driving surface extrusion the oscillating piece for contact switch produces the braking the contact signal of machine. The invention adopts a protection form combining a mechanical contact switch and an anti-collision device, and has low use cost, safety and reliability.)

1. The utility model provides a crashproof stop device which characterized in that includes:

the contact switch is arranged on the bottom plate, and a swinging piece used for triggering and enabling the contact switch to generate a contact signal is arranged on the contact switch;

the buffer, the buffer includes the contact lever, contact lever slidable mounting is in on the bottom plate, be connected with the elastic component that is used for buffering the impact that the contact lever receives on the contact lever, still be connected with the driving piece on the contact lever, be equipped with on the driving piece with the parallel driving surface of contact lever slip direction, the driving surface is close to the one end of swinging piece is equipped with the bevel face of falling with driving surface smooth connection, after the contact lever received the impact of motion machine, the contact lever drives the driving piece synchronous motion, the driving piece loops through bevel face of falling and driving surface extrusion the swinging piece for contact switch produces the braking the contact signal of machine.

2. An anti-collision limiting device according to claim 1, wherein the contact rod and the driving member are fixed on the upper end of a cylindrical guide rod, the lower end of the guide rod is fixed with a cylindrical guide block coaxial with the guide rod, the guide block is coaxially and slidably mounted in a cylindrical guide cylinder matched with the guide block, and the lower end of the guide cylinder is fixed on the bottom plate.

3. An anti-collision limiting device according to claim 2, wherein an annular limiting plate coaxial with the guiding cylinder is fixed at the upper end of the guiding cylinder, the diameter of the inner circle of the limiting plate is larger than that of the guiding rod and smaller than that of the guiding block, and the guiding rod vertically and upwardly penetrates through a through hole in the middle of the limiting plate.

4. An anti-collision limiting device according to claim 2, wherein a disc-shaped positioning seat coaxial with the guiding rod is fixed at the upper end of the guiding rod, a disc-shaped mounting seat coaxial with the positioning seat is fixed at the upper end face of the positioning seat, and the contact rod and the driving member are fixed on the mounting seat.

5. An anti-collision limiting device according to claim 4, wherein the elastic member is a cylindrical spring, two ends of the elastic member are respectively sleeved on the outside of the guiding cylinder and the outside of the positioning seat, two ends of the elastic member are respectively supported on the lower surface of the mounting seat and the upper surface of the base, and the elastic member is in a compressed state.

6. An anti-collision limiting device according to claim 5, wherein the driving member is a cylindrical tube, the upper end of the driving member is provided with a circular ring-shaped connector protruding inward along the radial direction of the driving member and integrally formed therewith, the mounting seat is coaxially disposed inside the driving member and fixed to the connector, the outer circumferential surface of the driving member is the driving surface, the lower end of the outer circumferential surface is provided with a conical surface smoothly connected with the outer circumferential surface and shrinking inward, the conical surface is the reverse slope, and the lower end surface of the driving member is higher than the lower end surface of the positioning block.

7. An anti-collision limiting device as claimed in claim 6, wherein the contact rod is cylindrical, a disc-shaped connecting plate coaxial with the contact rod is fixed at the lower end of the contact rod, the connecting plate is fixed on the upper surface of the fixing seat, and the contact rod is coaxial with the guide rod.

8. An anti-crash stop device according to claim 6, wherein said contact switch is secured to a support, said support being secured to said base.

9. An anti-collision limiting device according to claim 8, wherein a roller is rotatably mounted at the free end of the swinging member, the rotation axis of the roller is perpendicular to the axis of the guide rod, and the roller is tangent to the downward extending surface of the inverted inclined surface.

10. An anti-collision limiting device according to claim 1, wherein the bottom plate is provided with a plurality of positioning holes for mounting the bottom plate.

Technical Field

The invention relates to the technical field of limiting devices, in particular to an anti-collision limiting device.

Background

The crane is the main large-scale jack-up handling equipment in the existing market, is indispensable to the safety protection measure in its operation, and the common crane overhead traveling crane safety protection measure in the existing market mainly divide into two-stage: the first-stage safety protection is a control switch, and the second-stage safety protection is buffers arranged at two ends of a crane rail supporting beam; if first level safety protection is invalid, the overhead traveling crane will be full power and buffer bump, very easily take place the production accident, in order to solve above-mentioned problem, the technical personnel in the field combine together buffer and control switch in second level safety protection in order to form closed loop's signal feedback, can trigger control switch immediately after the buffer receives the external force compression promptly, control switch produces contact signal and then feeds back to the machine of motion and control its brake and slow down to the stop motion, reduce the impact, be convenient for protect corresponding equipment, play the guard action, but two kinds of structural style commonly used among the prior art do not: firstly, the buffer is combined with a non-contact photoelectric switch, the circuit control of the photoelectric switch is complex, the use cost is high, the use stability is general, and the potential safety hazard is large; secondly, the buffer is combined with a mechanical contact switch, and for some emergency situations or situations with a fast machine moving speed, a signal generated by the contact switch is not fed back to the moving machine, and the contact switch is extruded and damaged, or the contact signal generated by the contact switch is not fed back to the moving machine and disappears, so that the moving machine cannot receive the feedback signal, and the buffer is collided with the buffer under full force, the buffer is easily damaged, and even serious production accidents occur; therefore, the invention provides an anti-collision limiting device which is simple to control and safe and stable to use based on the technical problems.

Disclosure of Invention

The invention aims to provide an anti-collision limiting device which is safe to use, stable to control and low in cost.

In order to solve the technical problem, the invention provides an anti-collision limiting device, which comprises:

the contact switch is arranged on the bottom plate, and a swinging piece used for triggering and enabling the contact switch to generate a contact signal is arranged on the contact switch;

the buffer, the buffer includes the contact lever, contact lever slidable mounting is in on the bottom plate, be connected with the elastic component that is used for buffering the impact that the contact lever receives on the contact lever, still be connected with the driving piece on the contact lever, be equipped with on the driving piece with the parallel driving surface of contact lever slip direction, the driving surface is close to the one end of swinging piece is equipped with the bevel face of falling with driving surface smooth connection, after the contact lever received the impact of motion machine, the contact lever drives the driving piece synchronous motion, the driving piece loops through bevel face of falling and driving surface extrusion the swinging piece for contact switch produces the braking the contact signal of machine.

As a further improvement of the invention, the contact rod and the driving piece are fixed at the upper end of a cylindrical guide rod, a cylindrical guide block coaxial with the guide rod is fixed at the lower end of the guide rod, the guide block is coaxially and slidably installed in a cylindrical guide cylinder matched with the guide block, and the lower end of the guide cylinder is fixed on the bottom plate.

As a further improvement of the invention, the upper end of the guide cylinder is fixed with a circular limiting plate which is coaxial with the guide cylinder, the diameter of the inner circle of the limiting plate is larger than that of the guide rod and smaller than that of the guide block, and the guide rod vertically and upwardly penetrates through a through hole in the middle of the limiting plate.

As a further improvement of the present invention, a disc-shaped positioning seat coaxial with the guiding rod is fixed at the upper end of the guiding rod, a disc-shaped mounting seat coaxial with the positioning seat is fixed on the upper end surface of the positioning seat, and both the contact rod and the driving member are fixed on the mounting seat.

As a further improvement of the present invention, the elastic member is a cylindrical spring, two ends of the elastic member are respectively sleeved outside the guide cylinder and the positioning seat, two ends of the elastic member are respectively supported on the lower surface of the mounting seat and the upper surface of the base, and the elastic member is in a compressed state.

As a further improvement of the present invention, the driving member is cylindrical, an annular connector protruding inward along a radial direction of the driving member and integrally formed with the driving member is disposed at an upper end of the driving member, the mounting seat is coaxially disposed inside the driving member and fixed to the connector, an outer circumferential surface of the driving member is the driving surface, a conical surface which is smoothly connected to the outer circumferential surface and shrinks inward is disposed at a lower end of the outer circumferential surface, the conical surface is the reverse slope, and a lower end surface of the driving member is higher than a lower end surface of the positioning block.

As a further improvement of the present invention, the contact rod is cylindrical, a disc-shaped connecting plate coaxial with the contact rod is fixed to the lower end of the contact rod, the connecting plate is fixed to the upper surface of the fixed base, and the contact rod and the guide rod are coaxial.

As a further development of the invention, the contact switch is fastened to a support, which is fastened to the base plate.

As a further improvement of the invention, a roller is rotatably arranged at the free end of the swinging piece, the rotating axis of the roller is vertical to the axis of the guide rod, and the roller is tangent to the downward extending surface of the inverted inclined surface.

As a further improvement of the invention, the bottom plate is provided with a plurality of positioning holes for mounting the bottom plate.

The invention has the beneficial effects that:

the invention relates to an anti-collision limiting device, which adopts a limiting mode of combining a buffer and a mechanical contact switch, and is simple in circuit control, low in use cost and good in stability compared with a photoelectric switch; secondly, the contact switch is arranged on the side surface of the buffer, the swinging piece on the contact switch is squeezed through the driving surface on the driving piece, so that the contact switch generates a stable feedback signal, the swinging piece is contacted with the outer side surface of the driving piece through the roller at the front end of the swinging piece, the contact switch cannot be damaged by being collided by larger impact force or excessively squeezed due to some emergency situations, the use is safe and stable, and some unnecessary losses can be reduced; moreover, from buffer pressurized motion until by can not compressed, the driving surface of whole process driving piece is in the state of extrusion swinging member all the time, and contact switch produces the brake signal to the machine that strikes the buffer all the time promptly, the condition that feedback signal interrupted can not appear, reduces the appearance of the condition of out of control, can effectively deal with some emergency, reduces the impact, effectively protects corresponding machine equipment.

Drawings

FIG. 1 is a schematic structural view of an anti-collision limiting device according to the present invention;

FIG. 2 is a diagram illustrating a state in which a contact rod of the damper is impacted by an external force F according to the present invention;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is an isolated view of the various components of the present draft gear;

the reference numbers in the figures illustrate:

11. a base plate; 12. positioning holes; 13. a support; 14. a contact switch; 15. a swinging member; 16. a roller; 17. a guide cylinder; 18. a limiting plate; 19. a guide bar; 20. a guide block; 22. positioning seats; 23. a mounting seat; 24. an elastic member; 25. a drive member; 26. a linker; 27. a drive face; 28. chamfering; 29. an extension surface with a downward reverse inclined surface; 30. a contact lever; 31. a connecting plate.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1, an embodiment of an anti-collision limiting device according to the present invention is shown;

an anti-collision limiting device comprises: the contact switch 14 is installed on the bottom plate 11, a plurality of positioning holes 12 for installation of the contact switch 14 are formed in the bottom plate 11, and a swinging piece 15 for triggering and enabling the contact switch 14 to generate a contact signal is arranged on the contact switch 14; the buffer comprises a contact rod 30, the contact rod 30 is slidably mounted on the bottom plate 11, an elastic member 24 for buffering the impact force applied to the contact rod 30 is connected to the contact rod 30, a driving member 25 is further connected to the contact rod 30, a driving surface 27 parallel to the sliding direction of the contact rod 30 is arranged on the driving member 25, an inverted slope 28 smoothly connected with the driving surface 27 is arranged at one end of the driving surface 27 close to the oscillating member 15, referring to fig. 2, the oscillating member 15 of the contact switch 14 can be smoothly transited to be in contact with the driving surface 27 through the inverted slope 28, jerk is reduced, the driving surface 27 can be rapidly in contact with the oscillating member 15 and generate a feedback signal, delay is reduced, the driving member 25 and the oscillating member 15 can be effectively protected, abrasion is reduced, and after the contact rod 30 is subjected to the impact force of a moving machine, the contact lever 30 moves the driving member 25 synchronously, and the driving member 25 presses the swinging member 15 sequentially through the reverse slope 28 and the driving surface 27, so that the contact switch 14 generates a contact signal for braking the machine.

In an embodiment of the present invention, the contact rod 30 and the driving member 25 are fixed on the upper end of a cylindrical guide rod 19, the lower end of the guide rod 19 is fixed with a cylindrical guide block 20 coaxial with the guide rod 19, the guide block 20 is coaxially and slidably mounted in a cylindrical guide cylinder 17 matched with the guide rod, the guide block 20 freely slides in the guide cylinder 17, the sliding direction of the guide block 20 is limited by the guide cylinder 17, and the lower end of the guide cylinder 17 is fixed on the bottom plate 11.

In an embodiment of the present invention, an annular limiting plate 18 coaxial with the guiding cylinder 17 is fixed at the upper end of the guiding cylinder 17, an inner circle diameter of the limiting plate 18 is larger than a diameter of the guiding rod 19 and smaller than a diameter of the guiding block 20, the guiding rod 19 vertically and upwardly penetrates through a through hole in the middle of the limiting plate 18, the limiting plate 18 limits the guiding block 20 in the guiding cylinder 17, and the guiding block 20 is prevented from being separated from the guiding cylinder 17.

In an embodiment of the present invention, as shown in fig. 4, a disc-shaped positioning seat 22 coaxial with the guiding rod 19 is fixed at an upper end of the guiding rod 19, the positioning seat 22 is used for positioning an elastic member 24, a disc-shaped mounting seat 23 coaxial with the positioning seat 22 is fixed at an upper end surface of the positioning seat 22, the contact rod 30 and the driving member 25 are both fixed on the mounting seat 23, the elastic member 24 is a cylindrical spring, two ends of the elastic member 24 are respectively sleeved outside the guiding cylinder 17 and outside the positioning seat 22, two ends of the elastic member 24 are respectively supported on a lower surface of the mounting seat 23 and an upper surface of the base, and the elastic member 24 is in a compressed state, and the guiding block 20 is always in contact with the limiting plate 18 by an elastic force of the elastic member 24, so that a structure of the entire bumper is more compact and stable.

In a specific embodiment of the present invention, the driving member 25 is cylindrical, the upper end of the driving member 25 is provided with an annular connecting body 26 protruding inward along the radial direction of the driving member 25 and integrally formed with the driving member, the mounting seat 23 is coaxially disposed inside the driving member 25 and fixed to the connecting body 26, the outer circumferential surface of the driving member 25 is the driving surface 27, when the buffer works, the driving surface 27 is always in a state of extruding the oscillating member 15, that is, the contact switch 14 always generates a braking signal to a machine impacting the buffer, the situation of feedback signal interruption is not generated, the occurrence of an out-of-control situation is reduced, some emergency situations can be effectively coped with, the impact force is reduced, and the corresponding machine equipment is effectively protected; the lower end of the outer circumferential surface is provided with a conical surface which is smoothly connected with the outer circumferential surface and shrinks inwards, the conical surface is the inverted inclined surface 28, and the lower end surface of the driving piece 25 is higher than the lower end surface of the positioning piece, so that the driving piece 25 cannot be contacted with the bottom plate 11 in the movement process of the positioning piece, and the driving piece 25 is prevented from being damaged.

In an embodiment of the present invention, the contact rod 30 is cylindrical, a disc-shaped connecting plate 31 coaxial with the contact rod 30 is fixed to a lower end of the contact rod 30, the connecting plate 31 is fixed to an upper surface of the fixing base, and the contact rod 30 is coaxial with the guide rod 19.

In an embodiment of the present invention, referring to fig. 3, the contact switch 14 is fixed on the support 13, and the support 13 is fixed on the bottom plate 11, so that the installation and debugging of the contact switch 14 are facilitated, and the installation stability is good.

In an embodiment of the present invention, a roller 16 is rotatably mounted at a free end of the swinging member 15, and a rotation axis of the roller 16 is perpendicular to an axis of the guide rod 19, so that a sliding friction force applied to the swinging member 15 is changed into a rolling friction force through the roller 16, thereby reducing wear, improving service life of components, making the swinging member 15 smoother when contacting the driving surface 27 or the inverted inclined surface 28, and the roller 16 is tangent to a downward extending surface 29 of the inverted inclined surface 28.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.