CN210528294U - Crown block heavy hammer lifting limiting device - Google Patents
Crown block heavy hammer lifting limiting device Download PDFInfo
- Publication number
- CN210528294U CN210528294U CN201920834689.6U CN201920834689U CN210528294U CN 210528294 U CN210528294 U CN 210528294U CN 201920834689 U CN201920834689 U CN 201920834689U CN 210528294 U CN210528294 U CN 210528294U
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- weight
- travel switch
- crank
- heavy hammer
- limiting
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Abstract
The utility model belongs to the technical field of crown block safety devices, and discloses a crown block weight lifting limiting device, which comprises a limiting base, wherein one side of the limiting base is provided with a weight limiting seat, a weight mechanism is arranged on the weight limiting seat, the weight mechanism comprises a crank, one end of the crank is connected with a weight hanging frame, and the other end of the crank is fixed with a balance weight; the other side of limiting base is equipped with travel switch mount pad, installs travel switch on the travel switch mount pad, and leaves the clearance between travel switch push rod and the counter weight on the travel switch. The utility model discloses an adopt secondary mechanical structure to link up, will not often carry out the mechanical part and the electrical apparatus separation of maintaining. The method for adjusting the gap is utilized to solve the problem of arc adhesion caused by false operation of the electric appliance caused by vibration. The service life of the spare parts of the electric appliance is prolonged, and the safety factor is improved. Secondly, the installation mode is changed, the easily damaged parts are localized, the maintenance is simple and convenient, and the difficulty of the operation in the limited space is improved.
Description
Technical Field
The utility model relates to a crown block safety device technical field, concretely relates to crown block weight plays to rise stop device.
Background
The crown block lifting limit is a safety protection device of the crown block, and currently, two types of shaft head limit and heavy hammer limit are generally adopted. The weight limit switch used conventionally in the market is LX4-32 type, the mechanism drives the central rotating shaft to rotate by the lifting of the weight device, and the central shaft and the contact mechanism move in the same body. During the use, the contact side is pulled down through the gravity of the hanging frame, the contact is in a normally closed state, the equipment works in an electrified mode, when the movable pulley block rises to a limit position, the hanging frame is lifted up by a hook head of the movable pulley block connected with the movable pulley block through the steel wire rope set, the contact side is lifted up and disconnected by the heavy hammer through the gravity of the heavy hammer, the equipment is powered off, the hook head stops rising, and the safety protection effect is achieved. The mechanism has the following two disadvantages in the using process: firstly, because the motion of mechanical part and electrical apparatus position is synchronous in this mechanism, the vibrations that the overhead traveling crane produced in the operation cause the central pivot to beat easily. Thereby causing gap arcing at the contact portions and causing aging and adhesion of the contact portions for long-term use, resulting in device failure. The operator is easy to cause safety accidents in a state of not carefully operating. Secondly, the dismounting and mounting process of the LX4-32 type heavy hammer limiting device is complicated, the heavy hammer limiting device needs to be replaced integrally after failure, a single person cannot complete the replacement work, usually, only one person can be accommodated at the mounting position for operation, and the prior art cannot solve the technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that exists among the prior art, provide a safe, reliable overhead traveling crane weight plays to rise stop device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a crown block heavy hammer lifting limiting device comprises a limiting base, wherein a heavy hammer limiting seat is arranged on one side of the limiting base, a heavy hammer mechanism is arranged on the heavy hammer limiting seat, the heavy hammer mechanism comprises a crank hinged with the heavy hammer limiting seat, one end of the crank is connected with a heavy hammer hanging frame, and the other end of the crank is fixedly provided with a balance weight; the other side of limiting base is equipped with travel switch mount pad, installs travel switch on the travel switch mount pad, and leaves the clearance between travel switch push rod and the counter weight on the travel switch.
Furthermore, the gap between the travel switch push rod and the balance weight is 5 mm-8 mm.
Furthermore, the upper part of the heavy hammer limiting seat is provided with a mounting seat hole, the bottom surface of the mounting seat hole is an inclined plane, a crank is arranged in the mounting seat hole, the crank is provided with a pin hole, and the crank is connected with the heavy hammer limiting seat through a pin shaft.
Furthermore, a travel switch is mounted on the travel switch mounting seat through a bolt.
Further, the crank is welded to the counterweight.
Furthermore, a hanging ring is welded on the heavy hammer hanging frame, a steel wire rope is installed in the hanging ring, and the other end of the steel wire rope is installed at the end part of the crank.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses a crown block weight rises when stop device uses, utilizes the weight to hang frame gravity and draws up weight counter weight side, and travel switch is not stressed, and the contact is in normally closed state, and equipment must electric work, and when the gib head rose to the restricted position, the gib head hung the frame with the weight and lifted, and weight counter weight end self gravity pushes down travel switch push rod of travel switch, and the travel switch contact disconnection, and equipment outage stops to play the guard action. Meanwhile, a certain gap is reserved at the contact position of the heavy hammer and the travel switch in a normally closed state structurally, so that the condition that the travel switch is not subjected to misoperation due to vehicle vibration is ensured. The limiting base and the heavy hammer mechanism are not easy to damage, the device can be used for a long time without being disassembled, and the quick-wear part is only a travel switch. During maintenance, the travel switch can be replaced only by detaching the travel switch from the travel switch seat. The utility model discloses an adopt secondary mechanical structure to link up, will not often carry out the mechanical part and the electrical apparatus separation of maintaining. The method for adjusting the gap is utilized to solve the problem of arc adhesion caused by false operation of the electric appliance caused by vibration. The service life of the spare parts of the electric appliance is prolonged, and the safety factor is improved. Secondly, the installation mode is changed, the easily damaged parts are localized, the maintenance is simple and convenient, and the difficulty of the operation in the limited space is improved.
The utility model discloses the spacing seat of weight passes through the round pin hub connection with the crank, when both having guaranteed to connect, and has guaranteed to rotate. The bottom surface of the mounting seat hole is an inclined surface, so that the heavy hammer cannot be limited to rotate due to interference when rotating.
The utility model discloses a travel switch mount pad passes through the bolt and the travel switch installation, and travel switch belongs to the vulnerable part, when travel switch damages, can realize changing through dismantling the bolt, and is more convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the limiting base of the present invention.
The reference numerals have the following meanings: 1. a heavy hammer hanging frame; 2. a crank; 3. a heavy hammer limiting seat; 4. balancing weight; 5. a travel switch push rod; 6. a travel switch; 7. a travel switch mounting base; 8. a limiting base; 9. and (6) mounting a seat hole.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 1-2, a crown block weight lifting limiting device comprises a limiting base 8, a weight limiting seat 3 is arranged on one side of the limiting base 8, a weight mechanism is mounted on the weight limiting seat 3, the weight mechanism comprises a crank 2 hinged to the weight limiting seat 3, a mounting seat hole 9 is arranged on the upper portion of the weight limiting seat 3, pin holes are formed in two sides of the upper portion of the weight limiting seat 3, the bottom surface of the mounting seat hole 9 is an inclined surface, a crank 2 is mounted in the mounting seat hole 9, a pin hole is formed in the crank 2, and the crank 2 is connected with the weight limiting seat 3 through a pin shaft. One end of the crank 2 is connected with a heavy hammer hanging frame 1, a hanging ring is welded on the heavy hammer hanging frame 1, a steel wire rope is installed in the hanging ring, and the other end of the steel wire rope is installed at the end part of the crank 2. The other end of the crank 2 is welded with a balance weight 4; the other side of the limiting base 8 is provided with a travel switch mounting seat 7, a travel switch 6 is mounted on the travel switch mounting seat 7 through a bolt, a gap is reserved between a travel switch push rod 5 on the travel switch 6 and the balance weight 4, and the gap between the travel switch push rod 5 and the balance weight 4 is 5 mm-8 mm. (the travel switch 6 is provided with a travel switch push rod 5 per se, and is prior art)
Firstly, a heavy hammer limiting seat 3 is made of a steel plate, the heavy hammer limiting seat 3 is fixed at the opening of a crown block fixed pulley by welding or bolts, and a commercially available heavy hammer mechanism and a travel switch 6 are installed on the heavy hammer limiting seat 3. The heavy hammer hanging frame 1 is connected with the crank 2, then the steel wire rope group is sleeved in the heavy hammer hanging frame 1 to be drawn to the crown block, and finally the travel switch 6 is electrified and debugged.
When the heavy hammer hanging device is used, the gravity of the heavy hammer hanging frame 1 pulls up the heavy hammer counterweight 4 side, the travel switch 6 is not stressed, the contact is in a normally closed state, the device is powered on to work, when the movable pulley block rises to a limiting position, the hook head of the movable pulley block lifts the heavy hammer hanging frame 1, the gravity of the end of the heavy hammer counterweight 4 presses the travel switch push rod 5 of the travel switch 6 downwards, the contact of the travel switch 6 is disconnected, the device is powered off and stops, and therefore the protection effect is achieved. Meanwhile, a certain gap is reserved at the contact position of the counterweight 4 of the heavy hammer mechanism and the travel switch 6 in a normally closed state structurally, so that the condition that the travel switch 6 is not subjected to misoperation caused by vehicle vibration is ensured. The mechanical structures such as the heavy hammer limiting seat 3, the heavy hammer mechanism and the like are not easy to damage, the heavy hammer limiting seat can be used for a long time without being disassembled, and the wearing parts are only the travel switches 6. During maintenance, the travel switch 6 can be replaced only by detaching the travel switch from the travel switch seat.
Claims (6)
1. The utility model provides a crane weight plays to rise stop device which characterized by: the weight limiting device comprises a limiting base (8), wherein a weight limiting seat (3) is arranged on one side of the limiting base (8), a weight mechanism is arranged on the weight limiting seat (3), the weight mechanism comprises a crank (2) hinged with the weight limiting seat (3), one end of the crank (2) is connected with a weight hanging frame (1), and the other end of the crank (2) is fixedly provided with a balance weight (4); the other side of limiting base (8) is equipped with travel switch mount pad (7), installs travel switch (6) on travel switch mount pad (7), and leaves the clearance between travel switch push rod (5) and counter weight (4) on travel switch (6).
2. The crown block heavy hammer lifting limiting device as claimed in claim 1, wherein: the clearance between the travel switch push rod (5) and the balance weight (4) is 5 mm-8 mm.
3. The crown block heavy hammer lifting limiting device as claimed in claim 1 or 2, wherein: the upper portion of weight spacing seat (3) is equipped with mount pad hole (9), and the bottom surface of mount pad hole (9) is the inclined plane, is equipped with crank (2) in mount pad hole (9), and is equipped with the pinhole on crank (2), and crank (2) pass through the round pin hub connection with weight spacing seat (3).
4. The crown block heavy hammer lifting limiting device as claimed in claim 1, wherein: and the travel switch mounting seat (7) is provided with a travel switch (6) through a bolt.
5. The crown block heavy hammer lifting limiting device as claimed in claim 1, wherein: the crank (2) is welded with the counterweight (4).
6. The crown block heavy hammer lifting limiting device as claimed in claim 1, wherein: the heavy hammer hanging frame (1) is welded with a hanging ring, a steel wire rope is installed in the hanging ring, and the other end of the steel wire rope is installed at the end part of the crank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920834689.6U CN210528294U (en) | 2019-06-04 | 2019-06-04 | Crown block heavy hammer lifting limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920834689.6U CN210528294U (en) | 2019-06-04 | 2019-06-04 | Crown block heavy hammer lifting limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210528294U true CN210528294U (en) | 2020-05-15 |
Family
ID=70595232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920834689.6U Active CN210528294U (en) | 2019-06-04 | 2019-06-04 | Crown block heavy hammer lifting limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210528294U (en) |
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2019
- 2019-06-04 CN CN201920834689.6U patent/CN210528294U/en active Active
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