CN220351535U - Overload protection device of electric hoist crane - Google Patents
Overload protection device of electric hoist crane Download PDFInfo
- Publication number
- CN220351535U CN220351535U CN202321446826.1U CN202321446826U CN220351535U CN 220351535 U CN220351535 U CN 220351535U CN 202321446826 U CN202321446826 U CN 202321446826U CN 220351535 U CN220351535 U CN 220351535U
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- China
- Prior art keywords
- electric hoist
- protection device
- overload protection
- fixedly arranged
- pressure sensor
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to an overload protection device of an electric hoist crane, which comprises a guide rail, wherein an electric hoist body is arranged on the guide rail in a sliding manner, hydraulic clamping assemblies are symmetrically and fixedly arranged on two sides of a through hole, a hook is hung in a hanging ring, one end of a traction rope, which is far away from the hook, penetrates through a limiting plate and is fixedly provided with a sliding plate, one side of the limiting plate is provided with a PLC control device, an alarm is arranged above a pressure sensor, firstly, the steel wire rope is clamped by the hydraulic clamping assemblies and then a heavy object is lifted to be separated from the ground, the steel wire rope drives a supporting plate to move downwards, the supporting plate drives the sliding plate to compress a pressure spring upwards through the traction rope, once the sliding plate abuts against the pressure sensor, the pressure sensor inputs a pressure signal into the PLC control device, the alarm immediately sends out whistle to remind a worker of overload of the heavy object, and when the heavy object is lifted to be avoided, the steel wire rope is broken, the conception is ingenious, and the safety coefficient is higher.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to an overload protection device of an electric hoist crane.
Background
The electric hoist is a special lifting device which is arranged on a crown block and a portal crane, has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, is used for places such as industrial and mining enterprises, storage, wharfs and the like, for example, chinese patent document with publication number CN 105016233A discloses a crane electric hoist, which comprises a steel plate A and a steel plate B, wherein two connecting shafts are fixedly arranged at the front end and the rear end of the steel plate A and the steel plate B in a vertical arrangement mode, a driving wheel set A is arranged at the position close to the front end of the upper end of the right side of the steel plate A, a driven wheel set A is arranged at the position close to the rear end of the upper end of the right side of the steel plate A, a speed reducer A is arranged at the position close to the front end of the upper end of the left side of the steel plate A, a running motor A is arranged at the left end of the speed reducer A, a plurality of hydraulic push rods are arranged at the left side of the steel plate A in a front-rear arrangement mode, the steel plate A below the hydraulic push rod is provided with a slide way, the other end of the hydraulic push rod is provided with a balancing weight, the left side of the balancing weight is provided with a control box, the upper end of the left side of the steel plate B is provided with a driven wheel group B near the front position, the upper end of the left side of the steel plate B is provided with a driving wheel group B near the rear position, the right side of the steel plate B is provided with a conical motor near the front position, the rear end of the conical motor is provided with a winding drum, a steel wire rope is wound in the winding drum, the steel wire rope passes through the other end of the pulley and is arranged on the steel plate A, the lower end of the pulley is provided with a lifting hook, the rear end of the winding drum is provided with a brake, the upper end of the right side of the steel plate B is provided with a speed reducer B near the rear position, the right end of the speed reducer B is provided with a running motor B, the device cannot pre-warn the hoisted object, the safety coefficient is low, the requirements cannot be satisfied.
Disclosure of Invention
The utility model aims to provide an overload protection device for an electric hoist crane, which is used for solving the problems that the existing electric hoist crane cannot perform overload early warning on a lifted object and has low safety coefficient.
In order to solve the problem, this with novel electric hoist overload protection device, including the guide rail, it is equipped with the electric hoist body to slide on the guide rail, it has wire rope to coil on the electric hoist body, the fixed limiting plate that is equipped with in bottom symmetry of electric hoist body, hang between the limiting plate and be equipped with the backup pad, be used for the through-hole that wire rope passed through is seted up at the top of backup pad, the fixed hydraulic clamping assembly that is equipped with in both sides symmetry of through-hole, the fixed rings that are equipped with in top of backup pad, the articulates in the rings has the couple, the top of couple is all fixed and is equipped with the haulage rope, the haulage rope is kept away from the one end of couple all runs through limiting plate and is fixed to be equipped with the slide, the slide slides respectively on the guide bar, all overlaps on the guide bar and is equipped with the pressure spring, one side of limiting plate is fixed and is equipped with pressure sensor, one side of limiting plate be fixed be equipped with pressure sensor electric connection's PLC controlling means, pressure sensor's top is fixed with PLC controlling means electric connection's alarm.
The utility model provides an overload protection device of an electric hoist crane, which is characterized by comprising the following technical characteristics:
further, one end of the steel wire rope, which is far away from the electric hoist body, is fixedly provided with a lifting hook.
Further, the hydraulic clamping assembly comprises a hydraulic cylinder and a clamping plate fixedly connected with the output end of the hydraulic cylinder.
Further, the opposite sides of the clamping plates are adhered with wear-resistant layers.
Further, the wear-resistant layer is made of tetrafluoroethylene.
Further, hanging rings are symmetrically and fixedly arranged at the top of the lifting plate.
Further, fixed pulleys are fixedly arranged on two sides of the limiting plate.
Further, the sliding plate is made of stainless steel.
Further, the electric hoist body comprises a shell, a winding drum rotating in the shell and a motor for driving the winding drum to rotate.
The utility model has the following beneficial effects: firstly, through the clamping of hydraulic pressure clamping assembly wire rope, then with the heavy object lift by crane to break away from with ground can, wire rope drives the backup pad downwardly moving, the backup pad passes through haulage rope drive the slide upwards compresses the pressure spring, once the slide supports presses pressure sensor, pressure sensor is with pressure signal input extremely PLC controlling means, the alarm immediately sends out whistle to remind the staff heavy object overload, need stop lifting by crane, avoid the heavy object to lift by crane to the high altitude, wire rope takes place the fracture and takes place the incident, and the design is ingenious, and factor of safety is higher.
Drawings
Fig. 1 is a schematic structural diagram of the overload protection device of the electric hoist crane;
fig. 2 is an enlarged schematic view of a partial structure at a in fig. 1.
Detailed Description
The present utility model will be described in detail hereinafter with reference to the drawings in conjunction with the embodiments, and it should be noted that the embodiments of the present utility model and features of the embodiments may be combined with each other without conflict.
In one embodiment of the overload protection device of the electric hoist crane, as shown in fig. 1 to 2, the overload protection device comprises a guide rail 1, an electric hoist body 2 is slidably arranged on the guide rail 1, a steel wire rope 3 is wound on the electric hoist body 2, limiting plates 4 are symmetrically and fixedly arranged at the bottom of the electric hoist body 2, a supporting plate 5 is hung between the limiting plates 4, a through hole for the steel wire rope 3 to pass through is formed in the top of the supporting plate 5, hydraulic clamping assemblies 6 are symmetrically and fixedly arranged at two sides of the through hole, hanging rings 51 are symmetrically and fixedly arranged at the top of the supporting plate 5, hooks 52 are hung in the hanging rings 51, traction ropes 7 are fixedly arranged at the tops of the hooks 52, one ends of the traction ropes 7, far from the hooks 52, penetrate through the limiting plates 4 and are fixedly provided with sliding plates 8, the sliding plates 8 respectively slide on guide rods 9, the guide rods 9 are symmetrically fixed at the bottom of the electric hoist body 2, the guide rods 9 are respectively sleeved with a pressure spring 10, one side of the limiting plate 4 is fixedly provided with a pressure sensor 41, one side of the limiting plate 4 is fixedly provided with a PLC control device 42 electrically connected with the pressure sensor 41, an alarm 11 electrically connected with the PLC control device 42 is fixedly arranged above the pressure sensor 41, specifically, firstly, the steel wire rope 3 is clamped through the hydraulic clamping component 6, then the heavy object is lifted to be separated from the ground, the steel wire rope 3 drives the supporting plate 5 to move downwards, the sliding plate 8 is driven by the traction rope 7 to compress the pressure spring 10 upwards, once the sliding plate 8 abuts against the pressure sensor 41, the pressure sensor 41 inputs a pressure signal into the PLC control device 42, the alarm 11 immediately sounds a whistle to remind workers of overload of the heavy object, lifting is stopped, and the steel wire rope 3 is broken to avoid safety accidents when the heavy object is lifted to be at high altitude, ingenious conception and higher safety coefficient.
In one embodiment of the present application, preferably, the end of the wire rope 3 remote from the electric hoist body 2 is fixedly provided with a lifting hook 31.
In one embodiment of the present application, the hydraulic clamping assembly 6 preferably comprises a hydraulic cylinder 61 and a clamping plate 62 fixedly connected to the output end of the hydraulic cylinder 61.
In one embodiment of the present application, preferably, the opposite sides of the clamping plate 62 are each bonded with a wear layer.
In one embodiment of the present application, preferably, the material of the wear-resistant layer is tetrafluoroethylene.
In one embodiment of the present application, it is preferable that both sides of the limiting plate 4 are fixedly provided with fixed pulleys 400.
In one embodiment of the present application, the material of the slide plate 8 is preferably stainless steel.
In one embodiment of the present application, preferably, the electric block body 2 includes a housing 21, a drum 22 rotated in the housing 21, and a motor 23 for driving the drum 22 to rotate.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme recorded in the foregoing embodiments can be modified or the center technical features of the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (8)
1. The utility model provides an electric block hoist overload protection device, includes the guide rail, the slide is equipped with the electric block body on the guide rail, it has wire rope, its characterized in that to coil on the electric block body: limiting plates are symmetrically and fixedly arranged at the bottom of the electric hoist body, supporting plates are hung between the limiting plates, through holes for the steel wire ropes to pass through are formed in the tops of the supporting plates, hydraulic clamping assemblies are symmetrically and fixedly arranged on two sides of the through holes, hanging rings are symmetrically and fixedly arranged at the tops of the supporting plates, hooks are hung in the hanging rings, traction ropes are fixedly arranged at the tops of the hooks, the traction rope is far away from one end of the hook all runs through the limiting plate and is fixedly provided with a sliding plate, the sliding plate slides on the guide rod respectively, the guide rod is sleeved with a pressure spring, one side of the limiting plate is fixedly provided with a pressure sensor, one side of the limiting plate is fixedly provided with a PLC control device electrically connected with the pressure sensor, and an alarm electrically connected with the PLC control device is fixedly arranged above the pressure sensor.
2. The overload protection device of an electric hoist crane according to claim 1, characterized in that: and a lifting hook is fixedly arranged at one end, far away from the electric hoist body, of the steel wire rope.
3. The overload protection device of an electric hoist crane according to claim 1, characterized in that: the hydraulic clamping assembly comprises a hydraulic cylinder and a clamping plate fixedly connected with the output end of the hydraulic cylinder.
4. The overload protection device for an electric hoist crane according to claim 3, characterized in that: and the opposite sides of the clamping plates are adhered with wear-resistant layers.
5. The overload protection device of an electric hoist crane according to claim 4, wherein: the wear-resistant layer is made of tetrafluoroethylene.
6. The overload protection device of an electric hoist crane according to claim 1, characterized in that: fixed pulleys are fixedly arranged on two sides of the limiting plate.
7. The overload protection device of an electric hoist crane according to claim 1, characterized in that: the material of slide is stainless steel.
8. The overload protection device of an electric hoist crane according to claim 1, characterized in that: the electric hoist body comprises a shell, a winding drum rotating in the shell and a motor for driving the winding drum to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321446826.1U CN220351535U (en) | 2023-06-08 | 2023-06-08 | Overload protection device of electric hoist crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321446826.1U CN220351535U (en) | 2023-06-08 | 2023-06-08 | Overload protection device of electric hoist crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220351535U true CN220351535U (en) | 2024-01-16 |
Family
ID=89476049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321446826.1U Active CN220351535U (en) | 2023-06-08 | 2023-06-08 | Overload protection device of electric hoist crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220351535U (en) |
-
2023
- 2023-06-08 CN CN202321446826.1U patent/CN220351535U/en active Active
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