CN211644444U - Speed difference falling protector - Google Patents
Speed difference falling protector Download PDFInfo
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- CN211644444U CN211644444U CN201921962999.2U CN201921962999U CN211644444U CN 211644444 U CN211644444 U CN 211644444U CN 201921962999 U CN201921962999 U CN 201921962999U CN 211644444 U CN211644444 U CN 211644444U
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- winding device
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- braking
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Abstract
The utility model discloses a speed difference safety hook, which comprises a shell, an opening and a hook, wherein the shell is provided with a hook; the frame body is arranged in the shell; the winding device is arranged on the frame body, can wind the rope body when the winding device rotates in the forward direction, and releases the rope body when the winding device rotates in the reverse direction; the elastic resetting piece is used for driving the winding device to rotate in the positive direction; the braking device is used for locking the reverse rotation of the winding device; and the braking part is matched with the winding device through a multi-thread structure, synchronously rotates with the winding device and is tightly attached to the braking device. The utility model discloses a stopper is fixed to multi-thread external screw thread structure, and it is compared in traditional screw or the fixed mode of single thread, and its stopper arresting gear's pressure is invariable, and when consequently the winding device rotated, its slew rate was invariable, and consequently the pressure between its stopper of the speed difference ware of output and the friction part is all unanimous.
Description
Technical Field
The utility model belongs to the technical field of safety tool, especially, relate to a speed difference safety hook.
Background
The speed difference falling protector can quickly brake and lock falling objects within a limited distance, is suitable for hoisting goods, and protects the life safety of ground operators and the damage of hoisted workpiece objects. The safety protection device is suitable for safety protection when a suspended workpiece is prevented from accidentally falling during lifting of the overhead travelling crane, can effectively protect the life safety of ground operators and the damage of the object of the suspended workpiece, and is applied to high-place operation places such as metallurgical automobile manufacturing, petrochemical engineering, engineering construction, electric power, ships, communication, pharmacy, bridges and the like.
The braking friction plate and the reel of the speed difference safety catcher in the current market are fixed into a whole by screws, the friction resistance of the friction plate is completely determined by the tightening force of the screws, and the magnitude of the friction force is not easy to control, so that the buffering force of the speed difference safety catcher is not easy to control.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide a speed difference safety hook that braking effect is good, the security is high more.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a speed difference falling protector comprises a machine shell, a speed difference falling protector body and a speed difference falling protector body, wherein an opening is formed in the machine shell;
the frame body is arranged in the shell;
the winding device is arranged on the frame body, can wind the rope body when the winding device rotates in the forward direction, and releases the rope body when the winding device rotates in the reverse direction;
the elastic resetting piece is used for driving the winding device to rotate in the positive direction;
the braking device is used for locking the reverse rotation of the winding device;
and the braking part is matched with the winding device through a multi-thread structure, synchronously rotates with the winding device and is tightly attached to the braking device.
The utility model discloses a stopper under multi-thread structure's the fixed and arresting gear between pressure keep invariable, consequently take-up device slow rotating in-process under the gravity drives, frictional force between every safety hook stopper and the arresting gear is invariable, consequently every safety hook of group is when skidding, and the rotatory speed of take-up device is invariable, consequently realizes putting down the object slow speed that hangs on the safety hook, and it has ensured that the safety is high in the use of volume production safety hook.
Preferably, the winding device comprises a shaft body movably connected with the frame body and a winding structure in rotation stopping fit with the shaft body, and the braking part is connected with the shaft body through the multi-thread structure; through setting up axis body and winding structure, can be convenient for convolute the area rope to arresting gear can be connected to the axis body, and guarantee winding structure and arresting gear can the synchronization action.
Preferably, the multi-thread structure comprises a multi-thread external thread arranged on the shaft body and a multi-thread internal thread arranged on the braking part, and the multi-thread external thread is matched with the multi-thread internal thread; the multi-thread external thread and the multi-thread internal thread are connected, and the multi-thread internal thread are meshed with each other, so that the pressure of the braking device can be accurately controlled by the braking part, and the braking effect of the speed differentiator produced in the same batch is good.
Preferably, the braking device comprises a braking part and a friction piece matched with the braking part, and the braking part is tightly attached to the friction piece; the friction piece and the braking piece are arranged to be mutually attached, so that the friction force between the friction piece and the braking piece is large, the speed of the winding device during slipping rotation is low after the winding device is braked by the braking device, a person can be slowly put down, and the safety is high.
Preferably, the winding structure comprises a shaft sleeve sleeved on the shaft body and a limiting disc used for limiting the rope body, and the limiting disc is connected with the shaft body; can carry on spacingly through setting up axle sleeve and spacing dish to the area rope, guarantee to take the rope to be in neat state when convoluteing on the winding arrangement, conveniently will release and retrieve the area rope, its simple structure, long service life.
Preferably, the frame body is provided with a scratch-proof structure matched with the rope body; the anti-scraping structure can ensure that the belt rope can not contact with the opening in the process of pulling down the belt rope, so that the belt rope can not be abraded, the service life of the belt rope is prolonged, the belt rope is not scratched, the belt rope can not be broken, and the stability is high.
Preferably, the scratch-proof structure is a rotating roller arranged corresponding to the opening, and the rotating roller is arranged at the lower part of the frame body; through will prevent scraping the structure and establish to the live-rollers, its simple structure, when taking the rope to the pulling downwards, the live-rollers can rotate, and the frictional force between its and the area rope is little, and is good to the protective effect of taking the rope.
Preferably, a first cutting surface is arranged on the shaft body, and a second cutting surface which is abutted against the first cutting surface is arranged on the shaft sleeve; through mutual contact between first, the second cutting face, it restricts in order to realize the relative rotation between axis body and the axle sleeve each other, and it is effectual that it has the rotation stopping.
To sum up, the utility model discloses a multi-thread external screw thread structure fixes the stopper, and it is compared in traditional screw or the fixed mode of single thread, and its stopper arresting gear's pressure is invariable, and when consequently the winding device rotated, its rate of rotation was invariable, and consequently the pressure between its stopper of the speed difference ware of output and the friction member is all unanimous.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is a schematic view of a partial structure of the present invention.
Fig. 5 is a schematic view of a partial structure of the present invention.
Fig. 6 is a schematic structural view of the brake seat device of the present invention.
Fig. 7 is an exploded view of the brake device of the present invention.
Fig. 8 is a schematic structural view of the winding structure of the present invention.
Fig. 9 is a schematic structural view of the shaft body and the braking member according to the present invention.
Detailed Description
In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.
As shown in fig. 1-9, a speed difference safety hook comprises a housing 1, a frame body 2, a winding device 3, an elastic reset piece 4 and a braking device 5, wherein the housing 1 comprises a first housing 11 and a second housing 12, the first housing 11 is a metal shell, the second housing 12 is also a metal shell, and the first housing 11 and the second housing 12 are connected together by a screw, so as to form a housing with a hollow interior; the frame body 2 is arranged in the casing 1, the frame body 2 is an n-shaped metal plate, the upper portion of the frame body 2 is connected with the joint 22, the upper end portion of the joint 22 is provided with a circular ring-shaped joint ring 220, the joint ring 220 can facilitate a steel wire rope or a belt rope to be wound thereon, the lower portion of the joint 22 is provided with a convex ring 221, the frame body 2 is provided with a circular hole, the lower portion of the joint 22 is inserted into the circular hole, the convex ring 221 and the frame body 2 are limited, so that the joint 22 cannot be separated upwards, the joint 22 is sleeved with a clamp spring 222, the clamp spring 222 is located at the upper portion of the frame body 2, a bolt 223 is inserted into the joint 22, the bolt 223 is located at the upper portion of the clamp spring 222, and the bolt 223 limits the clamp spring 222 to achieve an anti-falling effect.
Further, the winding device 3 is used for winding a rope body, the rope body is a belt rope or a steel wire rope, the winding device 3 can rotate forward and backward relative to the frame body 2, when the winding device 3 rotates forward, the rope body can be wound on the winding device 3, and when the winding device 3 rotates backward, the rope body can be put down; the winding device 3 comprises a shaft body 31 and a winding structure sleeved on the shaft body 31, wherein the shaft body 31 is a metal shaft, the shaft body 31 penetrates out of the through hole on the frame body 2, and the shaft body 31 can rotate relative to the frame body 2; the winding structure is positioned in the middle of the frame body 2, and the winding structure 32 is in rotation stopping fit with the shaft body 31; specifically, the winding structure 32 includes a shaft sleeve 321 and two limiting discs 322, the shaft sleeve 321 is a metal sleeve, the shaft sleeve 321 is sleeved on the shaft body 31, the shaft body 31 is provided with a first cutting surface 310, the first cutting surface 310 is a plane, the shaft sleeve 321 is provided with a second cutting surface 320, the second cutting surface 320 is also a plane, and the first cutting surface 310 is in contact with the second cutting surface 320, so that the rotation stop connection between the shaft sleeve 321 and the shaft body is realized; the limiting discs 322 are metal discs, and the two limiting discs 322 are respectively connected with the shaft sleeve 321, so that the belt rope can be positioned between the two limiting discs 322 when the belt rope is wound on the shaft sleeve 321.
Specifically, the elastic restoring element 4 is a coil spring, and the elastic restoring element 4 is used for driving the shaft body 31 to rotate in the forward direction, so that the winding structure 32 can wind up the belt rope; the frame body 2 is connected with a protective cover 40 through a bolt, the protective cover 40 is a metal cover with a circular cavity, the elastic resetting piece 4 is positioned in the protective cover 40, one end of the elastic resetting piece 4 is connected with the protective cover 40, and the other end of the elastic resetting piece 4 is connected with the shaft body 31; specifically, the shaft body 31 has a notch 317, and the other end of the elastic restoring member 4 is inserted into the notch 317, so that the elastic restoring member 4 is connected to one end of the shaft body 31.
In order to prevent the winding device 3 from suddenly and rapidly rotating when rotating in the direction to cause people on the belt rope to rapidly fall down and fall down to be injured, the frame body 2 is provided with a braking device 5 for locking the winding device 3; specifically, the braking device 5 includes a locking seat 51, a fixing member 52, a pawl 53 and an elastic member 54, the locking seat 51 is a metal sheet, and the locking seat 51 is connected with the frame body 2 through a bolt; the locking seat 51 is provided with a circular hole, the locking seat 51 is provided with a plurality of ratchets 510, and the ratchets 510 are directly cut out of the locking seat; the fixing piece 52 is a metal disc, and the fixing piece 52 is connected with the shaft body 31; the pawl 53 is a metal claw, and is connected with the fixing member 52 through a bolt and a nut; the elastic member 54 is a torsion spring, one end of the elastic member 54 is connected to the fixed member 52, and the other end is connected to the pawl 53, and the elastic force of the elastic member 54 pulls the pawl 53 to a position where it is not in contact with the ratchet 510.
When the area rope is owing to receive human gravity and quick quilt drop-down, winding structure drives the axis body antiport, and owing to tightly being connected between mounting and the axis body this moment, consequently the mounting can be along with winding structure synchronous rotation at the initial stage, and this moment because the mounting rotational speed is very fast, its centrifugal force that causes the pawl is greater than the elasticity of elastic component, and consequently the pawl can be thrown out to the pawl can contact with the ratchet, thereby pins the mounting and continues to rotate with the restriction mounting, thereby realizes restricting the rope and continues downstream.
In order to ensure that the pawl 53 does not excessively act in the reverse direction when the pawl 53 contacts the ratchet 510, a protrusion 520 is arranged on the fixing member 52, and the protrusion 520 corresponds to the pawl 53, so that the pawl 53 is limited, and the winding structure 32 is ensured not to rotate continuously.
In order to slowly drop down the strap after the strap is locked by the ratchet 510 and the pawl 53, a friction member 522 is adhered to the back surface of the fixing member 52, and the friction member 522 is a disk; the friction member 522 is sleeved on the shaft body 31 along with the fixing member 52; the shaft body 31 is sleeved with a braking member 312, the braking member 312 is a nut with a convex cross section, the braking member 312 is screwed with the shaft body 31, and the braking member 312 is abutted with the friction member 522, wherein the abutting is that the braking member is abutted with the friction member 522; in order to ensure that the pressure of the braking member 312 against the friction member 522 is constant; when the shaft body 31 and the stopper 312 are coupled together by a multi-start thread structure including a multi-start external thread 319 provided on the shaft body 31 and a multi-start internal thread 318 provided on the stopper 312, the multi-start external thread 319 and the multi-start internal thread 318 are engaged with each other when the stopper 312 and the shaft body 31 are coupled.
Further, an opening 10 is formed on the housing 1, and the opening 10 allows the belt to extend from the casing 1; in order to prevent the service life of the belt rope from being influenced by mutual friction between the belt rope and the opening 10 in the process that the belt rope extends out of the opening 10; a rotating roller 21 is arranged at a position corresponding to the opening 10, the rotating roller 21 is sleeved on the metal bolt, the rotating roller 21 is arranged at the lower part of the frame body 2, and the belt rope can be contacted with the rotating roller 21.
It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Claims (8)
1. The utility model provides a speed differential safety hook which characterized in that: comprises that
A housing (1) provided with an opening (10);
a frame body (2) arranged in the casing (1);
the winding device (3) is arranged on the frame body (2), can wind up the rope body when the winding device (3) rotates in the forward direction, and releases the rope body when the winding device (3) rotates in the reverse direction;
the elastic resetting piece (4) is used for driving the winding device (3) to rotate in the positive direction; the braking device is used for locking the winding device (3) to rotate reversely;
and the braking part (312) is matched with the winding device (3) through a multi-thread structure, and the braking part (312) rotates synchronously with the winding device (3) and is tightly attached to the braking device.
2. A differential fall arrester as claimed in claim 1, wherein: the winding device (3) comprises a shaft body (31) movably connected with the frame body (2) and a winding structure (32) in rotation stopping fit with the shaft body (31), and the braking piece (312) is connected with the shaft body (31) through the multi-thread structure.
3. A differential fall arrester as claimed in claim 2, wherein: the multi-thread structure comprises a multi-thread external thread (319) arranged on the shaft body (31) and a multi-thread internal thread (318) arranged on the braking part (312), and the multi-thread external thread (319) is matched with the multi-thread internal thread (318).
4. A differential fall arrester as claimed in claim 3, wherein: the braking device comprises a braking part and a friction piece (522) matched with the braking part, and the braking part (312) is abutted against the friction piece (522).
5. A differential fall arrester as claimed in claim 2, wherein: the winding structure (32) comprises a shaft sleeve (321) sleeved on the shaft body (31) and a limiting disc (322) used for limiting the rope body, wherein the limiting disc (322) is connected with the shaft body (31).
6. A speed differential fall arrester as claimed in claim 5, wherein: the frame body (2) is provided with a scratch-resistant structure matched with the rope body.
7. The differential fall arrester of claim 6, wherein: the scratch-resistant structure is a rotating roller (21) arranged corresponding to the opening (10), and the rotating roller (21) is arranged at the lower part of the frame body (2).
8. A differential fall arrester as claimed in claim 7, wherein: the shaft body (31) is provided with a first cutting surface (310), and the shaft sleeve (321) is provided with a second cutting surface (330) which is abutted against the first cutting surface (310).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921962999.2U CN211644444U (en) | 2019-11-13 | 2019-11-13 | Speed difference falling protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921962999.2U CN211644444U (en) | 2019-11-13 | 2019-11-13 | Speed difference falling protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211644444U true CN211644444U (en) | 2020-10-09 |
Family
ID=72692201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921962999.2U Active CN211644444U (en) | 2019-11-13 | 2019-11-13 | Speed difference falling protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211644444U (en) |
-
2019
- 2019-11-13 CN CN201921962999.2U patent/CN211644444U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An anti falling device with speed difference Effective date of registration: 20201221 Granted publication date: 20201009 Pledgee: Agricultural Bank of China Limited by Share Ltd. Jinhua Economic Development Zone Branch Pledgor: JINHUA JECH TOOLS Co.,Ltd. Registration number: Y2020330001244 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP02 | Change in the address of a patent holder |
Address after: 321000 No. 1448, Tongxi Road, bailongqiao Town, Wucheng District, Jinhua City, Zhejiang Province Patentee after: JINHUA JECH TOOLS Co.,Ltd. Address before: 321025 No.10, Jinlong Road, bailongqiao Town, Wucheng District, Jinhua City, Zhejiang Province Patentee before: JINHUA JECH TOOLS Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |