CN111960216B - Rope end taper sleeve and stamping production process thereof - Google Patents
Rope end taper sleeve and stamping production process thereof Download PDFInfo
- Publication number
- CN111960216B CN111960216B CN202010647207.3A CN202010647207A CN111960216B CN 111960216 B CN111960216 B CN 111960216B CN 202010647207 A CN202010647207 A CN 202010647207A CN 111960216 B CN111960216 B CN 111960216B
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- metal tube
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- stamping
- rope
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 94
- 238000007493 shaping process Methods 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000004080 punching Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000000137 annealing Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 9
- 238000003672 processing method Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 238000009434 installation Methods 0.000 description 7
- 238000005422 blasting Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000000641 cold extrusion Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/06—Arrangements of ropes or cables
- B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
- F16G11/04—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with wedging action, e.g. friction clamps
Abstract
The invention relates to a rope end taper sleeve and a stamping production process thereof, which specifically comprises the following steps: step one: discharging, namely adopting a seamless metal tube; step two: stamping the outer surface of one end of the metal tube into a cone shape to form a cone-shaped part; step three: stamping and shaping one end of the conical part of the metal tube; step four: punching a notch on the metal tube; step five: heating the metal tube, and applying a punching force to one side of the conical part far away from the notch to enable the conical part to deviate towards the direction close to the notch; step six: stamping and shaping the other end of the metal tube to form a square part; step seven: and processing the through holes on the metal tube. When the rope end taper sleeve to be produced has larger offset, the processing method in the scheme is adopted to heat the raw materials before stamping, so that the plasticity of the raw materials is improved, cracking of the metal pipe in the process of offset is avoided, and the yield of the rope end taper sleeve is improved.
Description
Technical Field
The invention relates to the technical field of elevator accessory production processes, in particular to a rope end taper sleeve and a stamping production process thereof.
Background
The rope end taper sleeve is a fixing piece of a steel wire rope or a steel belt and is used for fixing the rope end of the steel belt or the steel wire rope, so that the other end of the rope end taper sleeve is connected with a car of an elevator. And the other end of the rope end taper sleeve is connected to the counterweight device or the lifting device through a rope end rod. When the existing rope end taper sleeve is installed, the rope end rod must be completely and vertically installed, the side rope end taper sleeve cannot be in a vertical downward state, the steel wire rope is subjected to acting forces in other directions, the installation requirement is high, the difficulty is high, the installation task is difficult to complete well, and the installation efficiency is low.
The existing rope end taper sleeve is generally processed by adopting two methods of multi-component welding or integral molding casting. The welding process is adopted, and the formed rope end taper sleeve has a welding seam, so that the firmness is poor; and an integrated molding casting process is adopted, so that the production process also needs auxiliary raw materials due to a plurality of process flows, and the casting process has higher cost. Patent application number CN201610075160.1 discloses a rope end taper sleeve and its production process, in which a stamping process of cold extrusion processing is adopted. Because the rope end taper sleeve is of a hollow structure, the rope end taper sleeve is processed by adopting a cold extrusion stamping process, and if the stamping deformation of the rope end taper sleeve is large, the raw material is easy to crack, so that stamping failure is caused.
Disclosure of Invention
The invention provides the rope end taper sleeve and the stamping production process thereof, which can avoid raw material cracking in the stamping production process and improve the yield in order to solve the problem that the raw material cracking is easy to cause in the stamping processing process of the existing rope end taper sleeve in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: the rope end taper sleeve comprises a square part, a conical part provided with a cavity and a receiving part for connecting the square part and the conical part; the bearing part is provided with a notch extending to the cavity, the square part is provided with a through hole for rotationally connecting with the rope head rod, and the conical part is provided with a fixing hole for fixing the baffle plate; the extension line of the inner wall of the conical part far away from one side of the notch penetrates through the through hole and has a linear distance of 1-3mm from the center of the through hole.
The rope head rod is offset when being installed and is not completely kept in a vertical state, and because the through hole of the rope head taper sleeve is rotationally connected with the rope head rod, the rope head taper sleeve can rotate relative to the rope head rod under the action of gravity or the tensile force of the steel belt, so that the rope head rod keeps a vertical state, the outlet of the taper part keeps a vertical downward state, and the steel belt arranged in the rope head taper sleeve can keep a vertical downward state. By adopting the rope nose cone for connection and installation, even if the rope nose rod is deviated in the installation process and is not completely kept in a vertical state, the rope nose cone can also keep a vertical state, the outlet of the cone part is kept downward, and the steel belt arranged in the rope nose cone sleeve can keep a vertical downward state. The car connected with the steel belt is stable in movement, the difficulty in installing the rope head rod is reduced, and the installation efficiency is improved.
A stamping production process of a rope end taper sleeve comprises the following specific steps:
step one: discharging, namely adopting a seamless metal tube;
step two: stamping the outer surface of one end of the metal tube into a cone shape to form a cone-shaped part;
step three: stamping and shaping one end of the conical part of the metal tube;
step four: punching a notch on the metal tube;
step five: heating the metal tube, and applying a punching force to one side of the conical part far away from the notch to enable the conical part to deviate towards the direction close to the notch;
step six: after flattening and shaping the metal tube, stamping and shaping one end of the metal tube far away from the conical part;
step seven: and processing the through holes on the metal tube.
The conical part corresponds to the conical part, and the square part corresponds to the square part. Because the conical part of the rope end taper sleeve is offset to one side relative to the square part and the offset is larger, in the fifth step, before the conical part is offset by punching one side of the conical part, the metal pipe is heated, the plasticity of the metal pipe is increased, and the metal pipe is prevented from cracking in the punching process.
Preferably, in the fifth step, the heating temperature is 520-580 ℃, and at the temperature, the metal tube has strong plasticity and no cracking during stamping.
Preferably, in the third step, the press shaping includes two steps of outer shaping and inner shaping; shaping the surface of the conical part is completed through a stamping die core wrapping the outer surface of the conical part, and shaping the inner surface of the conical part is completed through the stamping die core extending into the inner cavity of the metal tube. The outer shaping is to the external surface of the toper portion of above-mentioned fag end taper sleeve, and the inner shaping is to the inner wall of the toper portion of above-mentioned fag end taper sleeve promptly, through all carrying out the plastic to inside and outside surface for the toper surface that the toper portion inside and outside surface homoenergetic shaping was leveled.
Preferably, in the third step, after the outer shaping step is completed, the metal tube is subjected to a stress relief annealing treatment. After the stress relief annealing, the taper portion can be prevented from cracking when the internal shaping step is performed.
Preferably, the stress relief anneal is an air cooling after heating the metal tube to 500-600 degrees.
Preferably, before the fourth step, the metal tube is subjected to shot blasting. The shot blasting treatment can remove the oxide skin of the metal tube and the stress of the metal tube.
Preferably, in the second step, the press working of the tapered portion is performed in two steps. Because the taper of the taper part is less and the length is larger, the two times of stamping and stretching forming are separated, which is more beneficial to improving the quality of the formed product.
Preferably, in the sixth step, the whole metal tube is flattened to a predetermined width, and then one end of the metal tube away from the tapered portion is punched to form a square portion. After the whole appearance of the metal tube is kept at a width, one side of the metal tube far away from the conical part is processed into a square part in a punching and flattening mode, and the main body appearance processing of the rope nose cone head is completed.
Preferably, through holes are respectively processed on the conical part and the square part. The through holes on the square parts are through holes, and the through holes on the conical parts are fixing holes. The through holes on the square parts are punched, and the through holes on the conical parts are drilled.
Compared with the prior art, the invention has the beneficial effects that: when the rope end taper sleeve to be produced has larger offset, the processing method in the scheme is adopted to heat the raw materials before stamping, so that the plasticity is increased, cracking in the process of metal tube offset is avoided, and the yield of the rope end taper sleeve is improved.
Drawings
FIG. 1 is a schematic flow diagram of a rope nose cone sleeve and a stamping production process thereof according to the present invention;
fig. 2 is a schematic structural view of a rope nose cone sleeve.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present invention and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.
For convenience of reading and understanding, the front plate, the rear plate and the top plate in the housing structure are shown in the drawings of the embodiment of the invention.
The technical scheme of the invention is further specifically described by the following specific embodiments with reference to the accompanying drawings:
example 1
As shown in fig. 2, an embodiment of a rope hitch comprises a square part 1, a conical part 2 provided with a cavity 201, and a receiving part 3 connecting the square part 1 and the conical part 2, wherein the receiving part 3 is provided with a notch 301 extending to the cavity, and the square part 1 is provided with a through hole 101 for rotating connection with a rope hitch. The extended line of the inner wall 202 of the tapered portion 2 on the side far from the notch 301 passes through the through hole 101 and has a linear distance of 1.5mm from the center of the through hole. The center of the through hole 101 is located at the middle position of the square part 1, so that the stress of the square part 1 is located at the middle position, and the stress is more balanced. The side wall of the tapered portion 2 is provided with a fixing hole 203. The cross section of the square part is square, and the cross section of the conical part is conical.
The rope head rod is offset when being installed and is not completely kept in a vertical state, and because the through hole of the rope head taper sleeve is rotationally connected with the rope head rod, the rope head taper sleeve can rotate relative to the rope head rod under the action of gravity or the tensile force of the steel belt, so that the rope head rod keeps a vertical state, the outlet of the taper part keeps a vertical downward state, and the steel belt arranged in the rope head taper sleeve can keep a vertical downward state. By adopting the rope nose cone for connection and installation, even if the rope nose rod is deviated in the installation process and is not completely kept in a vertical state, the rope nose cone can also keep a vertical state, the outlet of the cone part is kept downward, and the steel belt arranged in the rope nose cone sleeve can keep a vertical downward state. The car connected with the steel belt is stable in movement, the difficulty in installing the rope head rod is reduced, and the installation efficiency is improved.
Example 2
Fig. 1 shows an embodiment of a process for producing a rope end cone sleeve, which is used for producing the rope end cone sleeve of embodiment 1, and specifically comprises the following steps:
step one: discharging, namely adopting a seamless metal tube;
step two: the outer surface of one end of the metal pipe is punched into a cone shape to form a cone-shaped part 2, and the cone-shaped part 2 is provided with a cavity 201 because the metal pipe belongs to a hollow structure;
step three: stamping and shaping one end of the conical part 2 of the metal pipe, and shaping the outer surface and the inner wall 202 of the conical part 2;
step four: punching a notch at the position of the metal tube close to the conical part 2 to finish machining the notch 301;
step five: heating the metal tube, and pressing one side of the conical part 2 far away from the notch 301 by applying force to enable the conical part 2 to deviate a certain distance in a direction approaching to the notch 301, so that the metal tube generates a bent receiving part 3;
step six: the whole metal tube is flattened to a set width, and then one side of the metal tube, which is far away from the conical part 2, is punched to be square to form a square part 1;
step seven: the metal pipe is processed with the fixing hole 203 and the through hole 101. In step five, the taper portion 2 is offset by a predetermined distance, and after the processing of the through hole 101 is completed, the extended line of the inner wall 202 of the taper portion 2 passes through the through hole 101 and has a linear distance of 1.5mm from the center of the through hole.
The working principle or working flow of the invention is as follows: because the conical part of the rope end taper sleeve is offset to one side relative to the square part and the offset is larger, in the fifth step, before the conical part is offset by punching one side of the conical part, the metal pipe is heated, the plasticity of the metal pipe is increased, and the metal pipe is prevented from cracking in the punching process.
The beneficial effects of this embodiment are: when the rope end taper sleeve to be produced has larger offset, the processing method in the scheme is adopted to heat the raw materials before stamping, so that the plasticity of the raw materials is improved, cracking of the metal pipe in the process of offset is avoided, and the yield of the rope end taper sleeve is improved.
Example 3
Another embodiment of the rope end taper sleeve and the stamping production process thereof are different from embodiment 2 in that the processing steps are further limited, and the processing steps are specifically as follows:
step one: and (3) blanking, namely adopting a seamless metal tube.
Step two: the outer surface of one end of the metal pipe is punched into a tapered shape to form the tapered portion 2, and since the metal pipe itself is of a hollow structure, the tapered portion 2 has a cavity 201.
Step three: stamping and shaping one end of the conical part 2 of the metal pipe, and shaping the outer surface and the inner wall 202 of the conical part 2; the stamping shaping comprises two steps of outer shaping and inner shaping; the outer shaping is performed by a stamping die core wrapping the outer surface of the conical part 2 to finish the shaping of the surface of the conical part 2, and the inner shaping is performed by a stamping die core extending into the inner cavity of the metal tube to finish the shaping of the inner wall 202 of the conical part 2. The outer shaping is to the external surface of the toper portion of above-mentioned fag end taper sleeve, and the inner shaping is to the inner wall of the toper portion of above-mentioned fag end taper sleeve promptly, through all carrying out the plastic to inside and outside surface for the toper surface that the toper portion inside and outside surface homoenergetic shaping was leveled.
After the outer shaping step is completed, the metal tube is subjected to stress relief annealing, which is to heat the metal tube to 520 ℃ and cool the metal tube in air. After the stress relief annealing, the taper portion can be prevented from cracking when the internal shaping step is performed. And (5) performing shot blasting treatment on the metal tube after finishing stamping and shaping.
Step four: the metal tube is punched with a notch at a position close to the conical part 2, and the notch 301 is finished.
Step five: heating the metal tube at 530 ℃, and pressing one side of the conical part 2 far away from the notch 301 to enable the conical part 2 to deviate a certain distance in a direction approaching to the notch 301, so that the metal tube generates a bent receiving part 3; the position of the metal tube subjected to the stamping force is the tube body which is in the same horizontal plane with the notch 301, so that the conical part 2 can be prevented from being deformed during stamping.
Step six: the whole metal tube is flattened to a set width, and then one end of the metal tube away from the tapered portion 2 is punched into a square shape to form a square portion 1. After the whole appearance of the metal tube is kept at a width, one side of the metal tube far away from the conical part is processed into a square part 1 in a punching and flattening mode, and the main body appearance processing of the rope nose cone head is completed.
Step seven: the metal pipe is processed with the fixing hole 203 and the through hole 101. The through holes on the square parts are through holes, and the through holes on the conical parts are fixing holes. The through holes on the square parts are punched, and the through holes on the conical parts are drilled.
Example 4
Another embodiment of the rope end taper sleeve and the stamping production process thereof are different from embodiment 2 in that the processing steps are further limited, and the processing steps are specifically as follows:
step one: and (3) blanking, namely adopting a seamless metal tube.
Step two: the outer surface of one end of the metal pipe is punched into a tapered shape to form the tapered portion 2, and since the metal pipe itself is of a hollow structure, the tapered portion 2 has a cavity 201.
Step three: stamping and shaping one end of the conical part 2 of the metal pipe, and shaping the outer surface and the inner wall 202 of the conical part 2; the stamping shaping comprises two steps of outer shaping and inner shaping; the outer shaping is performed by a stamping die core wrapping the outer surface of the conical part 2 to finish the shaping of the surface of the conical part 2, and the inner shaping is performed by a stamping die core extending into the inner cavity of the metal tube to finish the shaping of the inner wall 202 of the conical part 2. The outer shaping is to the external surface of the toper portion of above-mentioned fag end taper sleeve, and the inner shaping is to the inner wall of the toper portion of above-mentioned fag end taper sleeve promptly, through all carrying out the plastic to inside and outside surface for the toper surface that the toper portion inside and outside surface homoenergetic shaping was leveled.
After the outer shaping step is completed, the metal tube is subjected to stress relief annealing, which is to heat the metal tube to 590 ℃ and cool the metal tube in air. After the stress relief annealing, the taper portion can be prevented from cracking when the internal shaping step is performed. And (5) performing shot blasting treatment on the metal tube after finishing stamping and shaping.
Step four: the metal tube is punched with a notch at a position close to the conical part 2, and the notch 301 is finished.
Step five: heating the metal tube at 580 degrees, and pressing one side of the conical part 2 far away from the notch 301 to enable the conical part 2 to deviate a certain distance in a direction approaching to the notch 301, so that the metal tube generates a bent receiving part 3; the position of the metal tube subjected to the stamping force is the tube body which is in the same horizontal plane with the notch 301, so that the conical part 2 can be prevented from being deformed during stamping.
Step six: the whole metal tube is flattened to a set width, and then one end of the metal tube away from the tapered portion 2 is punched into a square shape to form a square portion 1. After the whole appearance of the metal tube is kept at a width, one side of the metal tube far away from the conical part is processed into a square part 1 in a punching and flattening mode, and the main body appearance processing of the rope nose cone head is completed.
Step seven: the metal pipe is processed with the fixing hole 203 and the through hole 101. The through holes on the square parts are through holes, and the through holes on the conical parts are fixing holes. The through holes on the square parts are punched, and the through holes on the conical parts are drilled.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The rope end taper sleeve is characterized by comprising a square part, a conical part provided with a cavity and a receiving part for connecting the square part and the conical part; the bearing part is provided with a notch extending to the cavity, the square part is provided with a through hole for rotationally connecting with the rope head rod, and the conical part is provided with a fixing hole for fixing the baffle plate; the extension line of the inner wall of the conical part far away from one side of the notch penetrates through the through hole and has a linear distance of 1-3mm from the center of the through hole.
2. A stamping production process of a rope end taper sleeve, which is characterized by comprising the following specific steps of:
step one: discharging, namely adopting a seamless metal tube;
step two: stamping the outer surface of one end of the metal tube into a cone shape to form a cone-shaped part;
step three: stamping and shaping one end of the conical part of the metal tube;
step four: punching a notch on the metal tube;
step five: heating the metal tube, and applying a punching force to one side of the conical part far away from the notch to enable the conical part to deviate towards the direction close to the notch;
step six: after flattening and shaping the metal tube, stamping and shaping one end of the metal tube far away from the conical part;
step seven: and processing the through holes on the metal tube.
3. The process according to claim 2, wherein in the fifth step, the heating temperature is 520-580 degrees.
4. The process for producing a rope end cone cover according to claim 2, wherein in the third step, the press shaping includes two steps of outer shaping and inner shaping; shaping the surface of the conical part is completed through a stamping die core wrapping the outer surface of the conical part, and shaping the inner surface of the conical part is completed through the stamping die core extending into the inner cavity of the metal tube.
5. The process according to claim 4, wherein in the third step, after the outer shaping step is completed, the metal tube is subjected to a stress relief annealing treatment.
6. The process according to claim 2, wherein the metal tube is shot-blasted before the fourth step.
7. The process according to claim 2, wherein in the second step, the process of pressing the taper portion is performed in two steps.
8. The process according to claim 2, wherein in the sixth step, the whole metal tube is flattened to a predetermined width, and then the end of the metal tube away from the tapered portion is punched into a square shape to form the square portion.
9. The press-working process of a rope end cone cover according to claim 8, wherein through holes are formed in the tapered portion and the square portion, respectively.
10. The process for producing a rope end cone cover according to claim 9, wherein the through hole of the square portion is formed by punching, and the through hole of the cone portion is formed by drilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010647207.3A CN111960216B (en) | 2020-07-07 | 2020-07-07 | Rope end taper sleeve and stamping production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010647207.3A CN111960216B (en) | 2020-07-07 | 2020-07-07 | Rope end taper sleeve and stamping production process thereof |
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| CN111960216A CN111960216A (en) | 2020-11-20 |
| CN111960216B true CN111960216B (en) | 2024-02-27 |
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| WO2018090316A1 (en) * | 2016-11-18 | 2018-05-24 | 南通昌荣机电有限公司 | New method for manufacturing rope end taper sleeve |
| CN106882687A (en) * | 2017-03-22 | 2017-06-23 | 南通昌荣机电有限公司 | A kind of taper sleeve component for elevator steel band |
| CN106986252A (en) * | 2017-03-22 | 2017-07-28 | 南通昌荣机电有限公司 | A kind of terminating set of elevator steel band |
| CN208856730U (en) * | 2018-09-29 | 2019-05-14 | 杭州鸿翔机械有限公司 | A kind of elevator rope end cover of wedge combination |
| CN210824993U (en) * | 2019-08-27 | 2020-06-23 | 东莞市鑫峰建筑机械有限公司 | Steel wire rope self-locking head |
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