CN115416719A - Manually-controlled claw-protecting type iron shoe - Google Patents
Manually-controlled claw-protecting type iron shoe Download PDFInfo
- Publication number
- CN115416719A CN115416719A CN202211160548.3A CN202211160548A CN115416719A CN 115416719 A CN115416719 A CN 115416719A CN 202211160548 A CN202211160548 A CN 202211160548A CN 115416719 A CN115416719 A CN 115416719A
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- CN
- China
- Prior art keywords
- button
- rod
- skate
- transmission
- claw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 118
- 230000000670 limiting effect Effects 0.000 claims abstract description 68
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 8
- 241001330002 Bambuseae Species 0.000 claims abstract description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 8
- 239000011425 bamboo Substances 0.000 claims abstract description 8
- 210000000078 claw Anatomy 0.000 claims description 57
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000010276 construction Methods 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/16—Positive railway stops
- B61K7/20—Positive wheel stops
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a manually controlled claw-protecting type iron shoe which comprises a bottom plate, an iron shoe body and a transmission assembly, wherein the bottom plate is provided with a plurality of clamping grooves; the end part of the skate body is provided with a handle; the upper portion of hand (hold) forms into the spacing section of thick bamboo of button, and wears to be equipped with the button pole in the spacing section of thick bamboo of button, and button pole one end extends to the hand (hold) outside in order to form into the end of pressing by the upper end of the spacing section of thick bamboo of button, and the other end of button pole extends to the outside of the spacing section of thick bamboo of button in order to form into the drive end by the lower extreme of the spacing section of thick bamboo of button. The iron shoe body of the iron shoe is of an integrally formed structure, so that the stability is better; the rotation angle of the transmission assembly is kept and controlled through the first limiting structure and the second limiting structure, so that the transmission assembly is prevented from loosening when being impacted, and the safety is improved; the push-button rod push type driving avoids the problem of complex operation caused by key operation.
Description
Technical Field
The invention relates to the technical field of shield tunnel construction, in particular to a manually-controlled claw-protecting type iron shoe.
Background
With the development of urban rail transit, the iron shoe becomes an indispensable part of rail horizontal transportation braking in the shield tunnel construction process. The iron shoe brake utilizes the principle of changing rolling friction into sliding friction to increase friction force, so that the sliding vehicle group decelerates and stops as soon as possible, and the purpose of braking is achieved.
In the actual construction process, most of the binding surface of the conventional iron shoe and the rail is in the horizontal direction, only a few contact surfaces in the vertical direction exist, and the iron shoe is easy to slide.
Among the prior art, chinese utility model patent of grant bulletin number CN205706700U, entitled "gland protects claw formula theftproof skate" discloses an skate with side lock claw structure, and it passes through the lock claw structure centre gripping rail both sides of side to increase the area of perpendicular, increased the area of contact surface promptly, thereby increased the frictional force with the rail, guaranteed braking effect. However, the solution disclosed in this prior art presents several drawbacks:
1. the driving of this locking claw of skate is through the gland pressure of skate front end and holds the pusher dog to order about the locking claw of both sides and paste and lean on the rail in order to grasp the rail, but, with the body of swing joint's mode design skate, especially gland department, through long-time use and receive the impact of external force, make the junction of gland and skate body break away from, the fracture easily, thereby lose the constraint effect to the locking claw.
2. This kind of skate among the prior art only carries out the spacing of locking claw through a gland structure, consequently, spacing effect is not good with the effect that receives the impact force, and life is low.
3. The gland type iron shoe can be opened and closed only by a key, and is complex to operate.
Therefore, in view of the above technical problems, there is a need for a new manually controlled claw-protecting skate.
Disclosure of Invention
The invention aims to provide a manually-controlled claw protection type iron shoe which can be operated without a key by driving a shifting claw to rotate through a button rod so as to drive locking claws at two sides to clamp a rail, utilizes limit structures at two positions of the button rod and a transmission rod to restrict and control the clamping force of the locking claws, has an integral iron shoe shell without the problem of separation or fracture caused by stress in the prior art and prolongs the service life.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention relates to a manually controlled claw-protecting type skate, which comprises:
a base plate;
the iron shoe comprises an iron shoe body connected with the bottom plate, wherein two sides of the iron shoe body are movably connected with symmetrically arranged locking claws; and
the transmission component is integrated in the skate body and is in transmission connection with the locking claws to drive the locking claws to move;
the end part of the iron shoe body is provided with a handle;
the upper part of the handle is formed into a button limiting cylinder, a button rod penetrates through the button limiting cylinder, one end of the button rod extends from the upper end of the button limiting cylinder to the outside of the handle to form a pressing end, and the other end of the button rod extends from the lower end of the button limiting cylinder to the outside of the button limiting cylinder to form a driving end;
when the button rod moves downwards along the extending direction of the button limiting cylinder, the driving end of the button rod is abutted to the transmission assembly so as to drive the locking claw to move through the transmission assembly.
Further, a steel sheet fixedly connected with the iron shoe body and the bottom plate is arranged inside the iron shoe body and at the position matched with the transmission assembly;
one side, facing the transmission assembly, of the steel sheet is movably connected with a transmission rod, and the transmission assembly drives the transmission rod to move in the vertical direction;
a first limiting structure is arranged at the joint of the button limiting cylinder and the button rod;
the joint of the transmission rod and the steel sheet is provided with a second limiting structure;
the first limiting structure and the second limiting structure jointly limit the rotation angle of the transmission assembly so as to maintain the relative position of the locking claw and the rail.
Furthermore, the iron shoe body is of an integrated structure;
the skate body includes:
a skate front structure and a skate rear structure;
the hand (hold) link firmly in the lateral surface of skate rear portion structure, just the spacing section of thick bamboo of button of hand (hold) upper end is along the perpendicular to the lateral surface direction of skate rear portion structure passes skate rear portion structure extends to inside the skate body.
Further, the transmission assembly includes:
the pusher dog is rotationally connected with the iron shoe body through a pusher dog shaft; and
the transmission rod;
three shift levers which are distributed at intervals are formed along the circumferential direction of the shift claw, and the three shift levers are respectively a driving shift lever which is abutted against the button rod, a transmission shift lever which is contacted with the lower end of the transmission rod and a reset shift lever;
a return spring is connected between the return deflector rod and the inner side surface of the front structure of the iron shoe;
the push button rod drives the shifting claw to rotate through the driving shifting rod so as to drive the transmission rod to move along the vertical direction through the transmission shifting rod;
the reset deflector rod pulls the reset spring.
Furthermore, the end part of the transmission deflector rod is provided with a deflector part which is bent and extended towards the bottom of the transmission rod.
Furthermore, the button limiting cylinder is provided with two limiting holes which are distributed at intervals;
a button fixing buckle is arranged on the button rod along the radial direction of the button rod, and the button fixing buckle is connected with the button rod through a buckle spring;
the button fixing buckle is driven by the spring force of the buckle spring to extend out of any limiting hole.
Furthermore, a steel sheet locking ring sleeved outside the transmission rod is arranged on one side of the steel sheet, which is matched with the transmission rod;
the matching position of the steel sheet and the transmission rod is provided with an elongated slot, and the transmission rod is provided with a convex part embedded into the elongated slot;
the transmission rod is in sliding connection with the steel sheet through the matching of the convex part and the long groove;
the transmission rod is fixed with two limiting rings along the length direction, and the transmission rod limits the movable stroke of the transmission rod through the contact of any limiting ring and the steel sheet locking ring.
Furthermore, the outer side of the locking claw is connected with an iron shoe side wing;
the upper end of the locking claw is rotationally connected with the steel sheet through a locking claw rotating shaft;
a transmission spring is connected between the transmission rod and the locking claw;
when the transmission rod moves upwards, the transmission rod stretches the transmission spring to drive the locking claw to turn towards one side of the rail.
In the technical scheme, the manually-controlled claw-protecting type iron shoe provided by the invention has the following beneficial effects:
the iron shoe body of the iron shoe is of an integrally formed structure, so that the stability is better; the rotation angle of the transmission assembly is kept and controlled through the first limiting structure and the second limiting structure, so that the transmission assembly is prevented from loosening when being impacted, and the safety is improved; the push-button rod push type driving avoids the problem of complex operation caused by key operation.
The return spring on the inner side of the integrally formed iron shoe body is used for realizing the return of the unlocked transmission assembly, so that the service life of the iron shoe can be prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural view of a manually controlled claw-protecting skate according to an embodiment of the present invention;
fig. 2 is a schematic view of a matching structure of a button rod and a button limiting cylinder of a manually-controlled claw-protecting type skate according to an embodiment of the present invention;
fig. 3 is a schematic view of a connection structure of a transmission rod and a locking claw of a manually controlled claw-protecting type skate according to an embodiment of the present invention.
Description of reference numerals:
1. an iron shoe body; 2. a handle; 3. a steel sheet; 4. a transmission rod; 5. a pusher dog;
101. a skate front structure; 102. a skate rear structure; 103. a return spring; 104. a base plate; 105. locking the claw; 106. iron shoe side wings; 107. a locking claw rotating shaft; 108. a transmission spring;
201. a button limit cylinder; 202. a button lever; 203. the button is fixed with a buckle; 204. a limiting hole;
301. a steel sheet locking ring;
401. a limiting ring;
501. a claw shaft; 502. driving a deflector rod; 503. resetting the deflector rod; 504. and a driving lever is driven.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings.
See fig. 1-3;
the manual control protect claw formula skate of this embodiment should protect claw formula skate includes:
a base plate 104;
the iron shoe comprises an iron shoe body 1 connected with a bottom plate 104, wherein two sides of the iron shoe body 1 are movably connected with symmetrically arranged locking claws 105; and
the transmission component is integrated in the skate body 1 and is in transmission connection with the locking claw 105 so as to drive the locking claw 105 to move;
the end part of the iron shoe body 1 is provided with a handle 2;
the upper part of the handle 2 is formed into a button limiting cylinder 201, a button rod 202 penetrates through the button limiting cylinder 201, one end of the button rod 202 extends from the upper end of the button limiting cylinder 201 to the outside of the handle 2 to form a pressing end, and the other end of the button rod 202 extends from the lower end of the button limiting cylinder 201 to the outside of the button limiting cylinder 201 to form a driving end;
when the button rod 202 moves downwards along the extending direction of the button limiting cylinder 201, the driving end of the button rod 202 abuts against the transmission assembly so as to drive the locking claw 105 to move through the transmission assembly.
Specifically, the embodiment discloses a claw-protecting type iron shoe capable of being locked and unlocked without a key, which comprises a bottom plate 104 and an iron shoe body 1 connected with the bottom plate 104; the transmission assembly is arranged in the rail, and the locking claws 105 on the two sides are driven to rotate by the transmission assembly so as to drive the locking claws 105 and the iron shoe side wings 106 to be attached to the two sides of the rail. The drive assembly's of this embodiment control mode utilizes the integrated button pole in hand (hold) 2 department to realize the drive, and in button pole 202 wore to locate the spacing section of thick bamboo 201 of button, when button pole 202 downstream, will butt drive assembly to drive assembly and rotate and finally realize the control to locking claw 105 angle.
Preferably, the steel sheet 3 fixedly connected with the iron shoe body 1 and the bottom plate 104 is arranged in the iron shoe body 1 and at the matching part of the iron shoe body 1 and the transmission assembly;
one side of the steel sheet 3, which faces the transmission assembly, is movably connected with a transmission rod 4, and the transmission assembly drives the transmission rod 4 to move along the vertical direction;
the joint of the button limiting barrel 201 and the button rod 202 is provided with a first limiting structure;
the joint of the transmission rod 4 and the steel sheet 3 is provided with a second limiting structure;
the first and second limiting structures cooperate to limit the angle of rotation of the drive assembly to maintain the relative position of the locking pawl 105 with respect to the rail.
In order to maintain the angle of the locking claw 105, the present embodiment designs two position-limiting structures, the first position is at the joint of the button position-limiting cylinder 201 and the button rod 202, i.e. the first position-limiting structure; the second position is the joint of the transmission rod 4 and the steel sheet 3, namely a second limit structure. One of the two limiting structures is used for limiting the rotation angle of the driving pawl 105 driven by the transmission assembly, namely the first limiting structure is used for controlling the rotation angle of the driving pawl 105 and maintaining the rotation angle of the driving pawl 105. The second limit structure is used for limiting the moving stroke of the transmission rod 4, and the size of the utilization applied to the locking claw 105 can be controlled by controlling the moving stroke of the transmission rod 4.
Preferably, the skate body 1 of the present embodiment is of a one-piece construction;
the skate body 1 includes:
a skate front structure 101 and a skate rear structure 102;
the handle 2 is fixedly connected to the outer side surface of the skate rear structure 102, and a button limiting cylinder 201 at the upper end of the handle 2 penetrates through the skate rear structure 102 along the direction perpendicular to the outer side surface of the skate rear structure 102 and extends to the inside of the skate body 1.
Preferably, the transmission assembly of the present embodiment includes:
the pusher dog 5 is rotationally connected with the iron shoe body 1 through a pusher dog shaft 501; and
a transmission rod 4;
the pusher dog 5 is formed with three spaced levers, which are a driving lever 502 abutted against the button rod 202, a transmission lever 504 contacted with the lower end of the transmission rod 4, and a reset lever 503, respectively, along the circumferential direction thereof;
a return spring 103 is connected between the return shift lever 503 and the inner side surface of the iron shoe front structure 101;
the button rod 202 drives the pusher dog 5 to rotate through the driving lever 502 so as to drive the transmission rod 4 to move in the vertical direction through the transmission lever 504;
the return lever 503 pulls the return spring 103.
The end of the driving lever 504 has a lever portion extending toward the bottom of the driving rod 4.
First, the present embodiment defines specific components of the first limiting structure, specifically:
the button limiting cylinder 201 is provided with two limiting holes 204 which are distributed at intervals;
a button fixing buckle 203 is arranged on the button rod 202 along the radial direction of the button rod 202, and the button fixing buckle 203 is connected with the button rod 202 through a buckle spring;
the button fixing catch 203 drives the button fixing catch 203 to extend out of any limiting hole 204 through the spring force of the catch spring.
When the button fixing buckle 203 is pressed, the button rod 202 can slide along the axial direction of the button limiting cylinder 201, at this time, the lower end of the button rod 202 abuts against the driving lever 502, the pusher dog 5 rotates under the rotation connection action of the pusher dog shaft 501, and the driving lever 504 on the other side lifts the driving rod 4 to move upwards. Because two limiting holes 204 are designed on the button limiting cylinder 201, when the button fixing buckle 203 enters the other limiting hole 204, the relative positions of the button rod 202 and the pusher dog 5 can be kept through the limiting action of the limiting holes 204 and the button fixing buckle 203, and the pusher dog 5 is prevented from rotating reversely.
Secondly, this embodiment has still further limited the constitution of second limit structure, specifically does:
a steel sheet locking ring 301 sleeved outside the transmission rod 4 is arranged on one side of the steel sheet 3 matched with the transmission rod 4;
the matching position of the steel sheet 3 and the transmission rod 4 is provided with a long groove, and the transmission rod 4 is provided with a convex part embedded in the long groove;
the transmission rod 4 is in sliding connection with the steel sheet 3 through the matching of the convex part and the long groove;
two limiting rings 401 are fixed on the transmission rod 4 along the length direction of the transmission rod, and the transmission rod 4 limits the movable stroke of the transmission rod 4 through the contact of any limiting ring 401 and the steel sheet locking ring 301.
The second limit structure of this embodiment is a structure for controlling the stroke of the transmission rod 4 in the up-and-down movement, and can control the displacement stroke of the transmission rod 4 by the abutting of the steel sheet locking ring 301 sleeved outside the transmission rod 4 and the two limit rings 401 welded and fixed on the outer surface of the transmission rod 4.
Preferably, the lateral side of the locking claw 105 of the embodiment is connected with an iron shoe lateral wing 106;
the upper end of the locking claw 105 is rotationally connected with the steel sheet 3 through a locking claw rotating shaft 501;
a transmission spring 108 is connected between the transmission rod 4 and the locking claw 3;
when the transmission lever 4 moves up, the transmission lever 4 stretches the transmission spring 108 to drive the locking claw 105 to turn toward the rail side.
In the technical scheme, the manually-controlled claw-protecting type iron shoe provided by the invention has the following beneficial effects:
the iron shoe body 1 of the iron shoe is of an integrally formed structure, so that the stability is better; the rotation angle of the transmission assembly is kept and controlled through the first limiting structure and the second limiting structure, so that the transmission assembly is prevented from loosening when being impacted, and the safety is improved; the push button lever 202 push-type driving avoids the problem of cumbersome operation due to key operation.
The return spring 103 on the inner side of the integrally formed iron shoe body 1 of the iron shoe realizes the return of the unlocked transmission assembly, and the service life of the iron shoe can be prolonged.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A manual control protects claw formula skate, its characterized in that should protect claw formula skate to include:
a base plate (104);
the iron shoe comprises an iron shoe body (1) connected with the bottom plate (104), wherein two sides of the iron shoe body (1) are movably connected with symmetrically arranged locking claws (105); and
the transmission component is integrated inside the skate body (1) and is in transmission connection with the locking claw (105) to drive the locking claw (105) to move;
the end part of the iron shoe body (1) is provided with a handle (2);
the upper part of the handle (2) is formed into a button limiting cylinder (201), a button rod (202) penetrates through the button limiting cylinder (201), one end of the button rod (202) extends from the upper end of the button limiting cylinder (201) to the outside of the handle (2) to form a pressing end, and the other end of the button rod (202) extends from the lower end of the button limiting cylinder (201) to the outside of the button limiting cylinder (201) to form a driving end;
when the button rod (202) moves downwards along the extending direction of the button limiting cylinder (201), the driving end of the button rod (202) abuts against the transmission assembly so as to drive the locking claw (105) to move through the transmission assembly.
2. The manual control claw-protecting type iron shoe is characterized in that a steel sheet (3) fixedly connected with the iron shoe body (1) and the bottom plate (104) is arranged inside the iron shoe body (1) and is matched with the transmission assembly;
one side, facing the transmission assembly, of the steel sheet (3) is movably connected with a transmission rod (4), and the transmission assembly drives the transmission rod (4) to move in the vertical direction;
the joint of the button limiting barrel (201) and the button rod (202) is provided with a first limiting structure;
the joint of the transmission rod (4) and the steel sheet (3) is provided with a second limiting structure;
the first and second limiting structures together limit the rotational angle of the transmission assembly to maintain the relative position of the locking claw (105) and the rail.
3. A manually controlled claw-protecting skate as claimed in claim 2, characterized in that said skate body (1) is of one-piece construction;
the skate body (1) comprises:
a skate front structure (101) and a skate rear structure (102);
the utility model discloses a skate, including the skate body (1), handle (2) link firmly in the lateral surface of skate rear portion structure (102), just the spacing section of thick bamboo of button (201) of handle (2) upper end is along the perpendicular to the lateral surface direction of skate rear portion structure (102) passes skate rear portion structure (102) and extends to inside skate body (1).
4. A manually controlled claw guard skate as defined in claim 3 wherein said transmission assembly comprises:
the pusher dog (5) is rotationally connected with the iron shoe body (1) through a pusher dog shaft (501); and
the transmission rod (4);
the pusher dog (5) is provided with three spaced pusher levers along the circumferential direction, namely a driving pusher lever (502) abutted against the button rod (202), a transmission pusher lever (504) contacted with the lower end of the transmission rod (4) and a reset pusher lever (503);
a return spring (103) is connected between the return shift lever (503) and the inner side surface of the iron shoe front structure (101);
the button rod (202) drives the pusher dog (5) to rotate through the driving deflector rod (502) so as to drive the transmission rod (4) to move in the vertical direction through the transmission deflector rod (504);
the reset deflector rod (503) pulls the reset spring (103).
5. A manually controlled claw-guard skate as claimed in claim 4, characterized in that the end of said transmission lever (504) has a lever portion extending curved towards the bottom of said transmission rod (4).
6. The manual control claw-protecting type skate of claim 2, characterized in that the button limiting cylinder (201) is provided with two limiting holes (204) which are distributed at intervals;
a button fixing buckle (203) is arranged on the button rod (202) along the radial direction of the button rod (202), and the button fixing buckle (203) is connected with the button rod (202) through a buckle spring;
the button fixing buckle (203) drives the button fixing buckle (203) to extend out of any limiting hole (204) through the spring force of the buckle spring.
7. The manual control claw-protecting type skate of claim 2, characterized in that one side of the steel sheet (3) matched with the transmission rod (4) is provided with a steel sheet locking ring (301) sleeved outside the transmission rod (4);
the position, matched with the transmission rod (4), of the steel sheet (3) is provided with a long groove, and the transmission rod (4) is provided with a convex part embedded into the long groove;
the transmission rod (4) is in sliding connection with the steel sheet (3) through the matching of the convex part and the long groove;
two limiting rings (401) are fixed on the transmission rod (4) along the length direction of the transmission rod, and the transmission rod (4) limits the moving stroke of the transmission rod (4) through the contact of any limiting ring (401) and the steel sheet locking ring (301).
8. A manually controlled claw guard skate as defined in claim 7 wherein said locking claw (105) has a skate wing (106) attached to the outside thereof;
the upper end of the locking claw (105) is rotatably connected with the steel sheet (3) through a locking claw rotating shaft (107);
a transmission spring (108) is connected between the transmission rod (4) and the locking claw (105);
when the transmission rod (4) moves upwards, the transmission rod (4) stretches the transmission spring (108) to drive the locking claw (105) to turn towards the side of the rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211160548.3A CN115416719B (en) | 2022-09-22 | Manual control's claw formula skate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211160548.3A CN115416719B (en) | 2022-09-22 | Manual control's claw formula skate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115416719A true CN115416719A (en) | 2022-12-02 |
| CN115416719B CN115416719B (en) | 2024-10-25 |
Family
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656252Y (en) * | 2003-08-01 | 2004-11-17 | 刘彦文 | Antitheft sliding proof iron shoe |
| CN202156432U (en) * | 2011-07-06 | 2012-03-07 | 徐和全 | Gland burglarproof skate |
| CN218703258U (en) * | 2022-09-22 | 2023-03-24 | 中建丝路建设投资有限公司 | Manually-controlled claw-protecting type iron shoe |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656252Y (en) * | 2003-08-01 | 2004-11-17 | 刘彦文 | Antitheft sliding proof iron shoe |
| CN202156432U (en) * | 2011-07-06 | 2012-03-07 | 徐和全 | Gland burglarproof skate |
| CN218703258U (en) * | 2022-09-22 | 2023-03-24 | 中建丝路建设投资有限公司 | Manually-controlled claw-protecting type iron shoe |
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