Safety protection device of hoisting crane
By designing the chuck and spring clamping head structure on the hoisting crane, the spring rebound is restricted, and the repeated vibration problems caused by the spring buffering device are solved, and the stability and safety of the crane are improved.
Patent Information
- Application Number
- CN202422605850.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-28
AI Technical Summary
When the spring buffering device of existing hoisting cranes absorbs impact force, the rebound force is too large, causing repeated vibrations from the crane or crane trolleys to damage parts and affect the stability and safety of the equipment.
A safety protection device for lifting cranes is designed, adopting multiple slots and spring head structures, limiting the rebound amplitude of the spring through the slots, and lifting the limit through the push rod to achieve the reset of the spring and reduce repeated vibrations.
It effectively reduces the repeated vibration of cranes or crane trolleys, avoids damage to parts, and ensures the operating stability and safety of cranes.
Smart Images
Figure CN223280492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of crane safety protection, in particular to a safety protection device for a hoisting crane. Background Art
[0002] A hoisting crane safety protection device is a protection device that can prevent the hoisting crane from being damaged in unexpected situations. The existing hoisting crane safety protection device is usually a spring buffer device. Specifically, when in use, the spring buffer device is installed on the end beam of the crane to absorb the impact force of the hoisting trolley when it hits the end beam when the switch fails. However, the spring buffer device absorbs the impact force by compressing the spring. In this way, when the impact force gradually decreases, the spring will generate a large rebound force, which will cause the crane or the hoisting trolley to vibrate repeatedly, thereby easily damaging the crane parts. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content
[0003] The utility model provides a safety protection device for a hoisting crane to solve the problems raised in the background technology.
[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hoisting crane safety protection device, comprising a horizontally arranged base, a vertically arranged guide cylinder fixedly connected to the top surface of the base, a plurality of slots equidistantly distributed in the vertical direction are radially opened on the inner side wall of the guide cylinder, a first guide rod is slidably connected in the guide cylinder, a first spring is fixedly connected between the bottom end of the first guide rod and the inner bottom surface of the guide cylinder, a buffer plate is fixedly connected to the top end of the first guide rod, a spring clamp corresponding to the position of the clamping slot is provided on the side wall of the first guide rod located in the guide cylinder, the spring clamp comprises a retractable clamp, the clamp is adapted to the clamping slot, the side of the clamp close to the clamping slot is an inclined surface, and the higher side of the inclined surface is arranged close to the clamping slot.
[0005] Preferably, the spring clamp includes a guide groove provided on the side wall of the first guide rod, the clamp is slidably connected to the guide groove, and a second spring is fixedly connected between the clamp and the guide groove.
[0006] Preferably, the card slot passes through the side wall of the guide cylinder, and a C-shaped mounting plate is fixedly connected to the outer wall of the guide cylinder, a support plate is slidably connected inside the mounting plate, and a number of push rods equal to and matching the number of card slots are fixedly connected to the side of the support plate close to the guide cylinder, and a second guide rod is fixedly connected to the side of the support plate away from the guide cylinder, and the end of the second guide rod away from the support plate extends to the outside of the mounting plate and is fixedly connected to a pressing plate.
[0007] Preferably, several groups of buffer components are provided between the buffer plate and the base, the buffer components include a second slide groove opened on the top surface of the base, the second slide groove is arranged along the radial direction of the guide cylinder, a limit rod arranged parallel to the second slide groove is fixedly connected in the second slide groove, a slider is slidably connected to the limit rod, the slider is located in the second slide groove, a third spring is fixedly connected between one end of the slider and the second slide groove, an inclined support rod is provided between the slider and the buffer plate, one end of the support rod is hinged to the slider, and the other end of the support rod is hinged to the buffer plate.
[0008] Preferably, connection holes are provided at the four corners of the base.
[0009] The beneficial effects of the present invention are as follows: (1) by providing a plurality of slots and spring clamps, the present invention can make the spring clamps be clamped into adjacent slots when the first spring rebounds, thereby reducing the amplitude of the first spring rebound, thereby reducing the repeated vibration of the crane or the hoisting trolley, avoiding damage to the crane parts, and thus ensuring the stability and safety of the crane operation; (2) by providing a push rod, the spring clamps can be pushed out of the slots, thereby releasing the limiting effect on the spring clamps, and thus facilitating the reset of the first spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural diagram of the utility model;
[0011] Figure 2 This is a structural diagram of the spring clamp of the utility model when it is located in the clamping groove;
[0012] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure at center A;
[0013] Figure 4 It is a structural diagram of the base of the utility model.
[0014] Figure markings: 1. base, 2. guide cylinder, 3. slot, 4. first guide rod, 5. first spring, 6. buffer plate, 7. spring clamp 7, 71. clamp, 72. guide slot, 73. second spring, 8. mounting plate, 9. support plate, 10. push rod, 11. second guide rod, 12. pressing plate, 13. buffer assembly, 131. second slide groove, 132. limiting rod, 133. slider, 134. third spring, 135. support rod, 14. connecting through hole. DETAILED DESCRIPTION
[0015] The present invention will be further described below with reference to the accompanying drawings. Figure 1 The direction in shall prevail.
[0016] like Figure 1-4As shown, the utility model provides a hoisting crane safety protection device, including a horizontally arranged base 1, a vertically arranged guide cylinder 2 is fixedly connected to the top surface of the base 1, a plurality of slots 3 equidistantly distributed in the vertical direction are radially opened on the inner side wall of the guide cylinder 2, a first guide rod 4 is slidably connected in the guide cylinder 2, a first spring 5 is fixedly connected between the bottom end of the first guide rod 4 and the inner bottom surface of the guide cylinder 2, a buffer plate 6 is fixedly connected to the top of the first guide rod 4, a spring clamp 7 opposite to the slot 3 is provided on the side wall of the first guide rod 4 in the guide cylinder 2, the spring clamp 7 includes a retractable clamp 71, the clamp 71 is adapted to the slot 3, the side of the clamp 71 close to the slot 3 is an inclined surface, and the higher side of the inclined surface is arranged close to the slot 3. Specifically, when the clamp 71 is clamped into the slot 3, as shown Figure 3 As shown, the lower side of the inclined surface is located outside the card slot 3.
[0017] Specifically, when in use, the safety protection device is fixed to the end beam of the crane. When the lifting trolley loses control and hits the buffer plate 6, the buffer plate 6 will push the first guide rod 4 to move. The first guide rod 4 can absorb the impact force of the lifting trolley by compressing the first spring 5. At the same time, the clamping head 71 moves with the first guide rod 4. When the clamping head 71 moves into the first slot 3, since the side of the clamping head 71 close to the slot 3 is an inclined surface, and the lower side of the inclined surface is located outside the slot 3, the first guide rod 4 can continue to drive the clamping head 71 to move until the first spring 5 rebounds, which can drive the clamping head 71 to move in the opposite direction. When the clamping head 71 moves to the adjacent slot 3, it can automatically pop out into the slot 3, as shown in FIG. Figure 3 As shown, at this time, the clamping slot 3 can prevent the clamping head 71 from continuing to move, so as to reduce the rebound amplitude of the first spring 5, thereby reducing the repeated vibration of the crane or the lifting trolley and avoiding damage to the crane parts.
[0018] The utility model provides a plurality of slots 3 and spring clamps 7. When the first spring 5 rebounds, the spring clamp 7 can be clamped into the adjacent slot 3 to reduce the rebound amplitude of the first spring 5, thereby reducing the repeated vibration of the crane or the lifting trolley, avoiding damage to the crane parts, and further ensuring the stability and safety of the crane operation.
[0019] In some embodiments, the spring clamp 7 includes a guide groove 72 defined on the side wall of the first guide rod 4, the clamp 71 being slidably connected to the guide groove 72, and a second spring 73 being fixedly connected between the clamp 71 and the guide groove 72. Specifically, in the initial state, the second spring 73 is in a compressed state. When the clamp 71 moves to the clamping groove 3, the second spring 73 can push the clamp 71 into the clamping groove 3.
[0020] In some embodiments, the slot 3 passes through the side wall of the guide cylinder 2, and a C-shaped mounting plate 8 is fixedly connected to the outer wall of the guide cylinder 2. A support plate 9 is slidably connected to the mounting plate 8. A number of push rods 10 equal in number to and compatible with the slots 3 are fixedly connected to the side of the support plate 9 close to the guide cylinder 2. The position of the push rod 10 is opposite to the position of the slot 3. A second guide rod 11 is fixedly connected to the side of the support plate 9 away from the guide cylinder 2. The end of the second guide rod 11 away from the support plate 9 extends to the outside of the mounting plate 8 and is fixedly connected to a pressing plate 12. Specifically, during use, when the pressing plate 12 is pressed, the pressing plate 12 can push the push rod 10 to move into the slot 3 through the second guide rod 11 and the support plate 9, and then the push rod 10 can push the clamping head 71 out of the slot 3, thereby releasing the limiting effect on the spring clamping head 7, and then facilitating the reset of the first spring 5; in addition, in the initial state, the end of the push rod 10 away from the support plate 9 is located in the slot 3, so that when the push rod 10 moves, it can guide the push rod 10.
[0021] In some embodiments, several groups of buffer components 13 are provided between the buffer plate 6 and the base 1. The buffer component 13 includes a second slide groove 131 opened on the top surface of the base 1. The second slide groove 131 is arranged along the radial direction of the guide cylinder 2. A limiting rod 132 arranged parallel to the second slide groove 131 is fixedly connected in the second slide groove 131. A slider 133 is slidably connected to the limiting rod 132. The slider 133 is located in the second slide groove 131. A third spring 134 is fixedly connected between the slider 133 and one end of the second slide groove 131. The third spring 134 is sleeved on the limiting rod 132. An inclined support rod 135 is provided between the slider 133 and the buffer plate 6. One end of the support rod 135 is hinged to the slider 133, and the other end of the support rod 135 is hinged to the buffer plate 6. Specifically, when in use, the third spring 134 is located on the inner side of the slider 133. When the buffer plate 6 is hit, the buffer plate 6 can push the slider 133 to slide outward through the support rod 135. When the slider 133 slides, the third spring 134 can be stretched, thereby further absorbing the impact force of the lifting trolley.
[0022] In some embodiments, connecting holes 14 are provided at the four corners of the base 1. In this way, when in use, bolts or other connecting parts can be used to pass through the connecting holes 14 to detachably connect the safety protection device to the crane end beam, thereby facilitating the disassembly and installation of the safety protection device.
[0023] The above embodiments can be combined with each other.
[0024] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model fall within the scope of protection of the technical solution of the utility model.
Claims
1. A safety protection device for a hoisting crane, comprising a horizontally arranged base, characterized in that: A vertically arranged guide cylinder is fixedly connected to the top surface of the base, and a plurality of slots equidistantly distributed in the vertical direction are radially opened on the inner side wall of the guide cylinder. A first guide rod is slidably connected in the guide cylinder, and a first spring is fixedly connected between the bottom end of the first guide rod and the inner bottom surface of the guide cylinder. A buffer plate is fixedly connected to the top of the first guide rod, and a spring clamp corresponding to the position of the slot is provided on the side wall of the first guide rod located in the guide cylinder. The spring clamp includes a retractable clamp, which is adapted to the slot, and a side of the clamp close to the slot is an inclined surface, and a higher side of the inclined surface is arranged close to the slot.
2. A hoisting crane safety protection device according to claim 1, characterized in that: The spring clamp includes a guide groove provided on the side wall of the first guide rod. The clamp is slidably connected to the guide groove. A second spring is fixedly connected between the clamp and the guide groove.
3. A hoisting crane safety protection device according to claim 1, characterized in that: The card slot passes through the side wall of the guide cylinder, and a C-shaped mounting plate is fixedly connected to the outer wall of the guide cylinder. A support plate is slidably connected inside the mounting plate. A number of push rods equal to and matching the card slots are fixedly connected to the side of the support plate close to the guide cylinder, and a second guide rod is fixedly connected to the side of the support plate away from the guide cylinder. An end of the second guide rod away from the support plate extends to the outside of the mounting plate and is fixedly connected to a pressing plate.
4. A hoisting crane safety protection device according to claim 1, characterized in that: Several groups of buffer components are provided between the buffer plate and the base, and the buffer component includes a second slide groove opened on the top surface of the base, the second slide groove is arranged along the radial direction of the guide cylinder, a limit rod arranged parallel to the second slide groove is fixedly connected in the second slide groove, a slider is slidably connected on the limit rod, the slider is located in the second slide groove, a third spring is fixedly connected between one end of the slider and the second slide groove, an inclined support rod is provided between the slider and the buffer plate, one end of the support rod is hinged to the slider, and the other end of the support rod is hinged to the buffer plate.
5. The hoisting crane safety protection device according to claim 1, characterized in that: The four corners of the base are all provided with connecting through holes.