CN208776206U - A kind of novel steel rail gripping mechanism - Google Patents
A kind of novel steel rail gripping mechanism Download PDFInfo
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- CN208776206U CN208776206U CN201821186632.1U CN201821186632U CN208776206U CN 208776206 U CN208776206 U CN 208776206U CN 201821186632 U CN201821186632 U CN 201821186632U CN 208776206 U CN208776206 U CN 208776206U
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- gripping mechanism
- piston rod
- connection ring
- pawl
- steel rail
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Abstract
The utility model creation provides a kind of novel steel rail gripping mechanism, and the gripping mechanism includes the hydraulic drive unit on top and the nipper units of lower part；The hydraulic drive unit completes the driving to nipper units by connecting rod；The hydraulic drive unit includes piston rod；The nipper units include that clamp seat, pawl pincers and adjusting block, the piston rod and adjusting block are rotatablely connected by connecting rod, and the adjusting block and pawl are clamped and be rotatablely connected by pin shaft, and the pawl pincers and clamp seat are rotatablely connected also by pin shaft；It is secondary by being rotatablely connected at three when piston rod moves along a straight line under hydraulic oil driving, band pawl pincers folding, thus clamping and release of the realization to rail.The rail gripping mechanism that the utility model is created can ensure rail safety, steadily, rapidly load and unload；When hydraulic drive unit acts, guarantees that the power of output can be efficiently transferred to pawl pincers by piston rod, do not meet clamping stagnation and transmission efficiency is high.
Description
Technical field
The invention belongs to railway machinery field, more particularly, to a kind of novel steel rail gripping mechanism.
Background technique
Railway long rail transport vehicle needs special gripping mechanism during loading and unloading rail, to complete the folding and unfolding of rail:
In railway long rail replacement operation, equipped with the handling operation trolley that can be moved along fixed guide rail, operating trolley on transport vehicle
Gapless line is clamped by the gripping mechanism of rotating mechanical arm end, moves it on transport vehicle guide rail, to complete rail
Handling.Existing rail gripping mechanism, one is mechanical clamp forceps, clamp rail landing by gravity；Another kind is screw
Clamp needs manual adjustment to be clamped；
Mechanical clamp forceps need artificial lifting, are mostly used to complete the vertical lifting of rail, in single-point clamping, due to gravity
Declines or chucking power can not automatically adjust, and cause the frictional force between rail and clamp unstable, and opposite sliding occurs, leads
It causes rail to vertically move on leading block, rail can not only be damaged, but also safety is poor；Screw clamp needs
Manual adjustment is clamped, and flexibility is poor, influences the efficiency of loading and unloading.
Summary of the invention
The problem to be solved by the invention is to provide a kind of novel steel rail gripping mechanisms, it is ensured that the folder of lasting stability
Holding force reduces security risk, while realizing automated job, improves the efficiency of loading and unloading.
In order to solve the above technical problems, the invention the technical solution adopted is that:
A kind of novel steel rail gripping mechanism, which is characterized in that the gripping mechanism includes the hydraulic drive unit on top
With the nipper units of lower part；The hydraulic drive unit completes the driving to nipper units by connecting rod；
The hydraulic drive unit includes oil cylinder, and the oil cylinder includes piston rod, and the piston rod is with connecting rod
Vertically it is fixedly connected；
The nipper units include that clamp seat, pawl pincers and adjusting block, the piston rod and adjusting block are turned by connecting rod
Dynamic connection, the adjusting block and pawl are clamped to be rotatablely connected by pin shaft, and the pawl pincers and clamp seat are rotatablely connected also by pin shaft；When
It is secondary by being rotatablely connected at three when piston rod moves along a straight line under hydraulic oil driving, band pawl pincers folding, thus realization pair
The clamping and release of rail；
The gripping mechanism further includes the connection ring having between hydraulic drive unit and nipper units, the oil cylinder
Bottom and the connection ring are clamped by copper sheathing, and the hydraulic drive unit is rotated relative to connection ring；The nipper units with
The connection ring is clamped also by copper sheathing, and the nipper units can be rotated relative to connection ring.
Further, the bottom of the piston rod is vertically installed with a connecting tube, and the connecting rod is sheathed on the connecting tube
It is interior.
Further, the oil cylinder further includes the cylinder body ontology for having top, the cushion dashpot of lower part, the top of the cushion dashpot and
Bottom, which is equipped with, passes through through-hole for piston rod, and the piston rod enters cushion dashpot from cylinder body ontology, and is stretched out and connected by cushion dashpot
Extension bar connection；The side wall of the cylinder body ontology is equipped with oil inlet and oil return opening.
Further, be equipped with a spring in the cushion dashpot, the spring pocket is set to piston rod periphery, the piston rod it is upper
Portion is fixedly provided with spring base, and the spring is between spring base and cushion dashpot cylinder bottom；It is transported downwards when piston rod stretches out cushion dashpot
When dynamic, band flexible spring seat compressed spring, when piston rod retraction, the spring base is transported upwards under the active force of recoil of spring
It is dynamic.
Further, the bottom of the cushion dashpot and the connection ring are clamped by copper sheathing, and the hydraulic drive unit is opposite
It is rotated in connection ring.
Further, the nipper units include clamp seat, pawl pincers；
The clamp seat is door type structure, includes mainboard and the side plate for being vertically located in mainboard two sides, the mainboard bottom
Portion is fixed there are four the supporting plate for being in distributed rectangular, and the supporting plate is arranged in parallel with side plate；Pass through muscle between the supporting plate and mainboard
Plate reinforcement is fixedly connected；
Rotation is equipped with a pair of of pawl pincers between the mainboard of every side and two supporting plates of the side, this clamps each pawl that pawl clamps
Pass through the rotation connection of the first pin shaft with mainboard and corresponding supporting plate；
Pawl pincers bottom is the crozier structure be curved to the inside, the top of the pawl pincers open up it is fluted, it is described recessed
Channel opening is clamped towards opposite side pawl to be arranged；An adjusting block is equipped with by the rotation of the second pin shaft in the groove, ipsilateral a pair of pawl pincers
It is rotatablely connected between two adjusting blocks by the connecting rod；The adjusting block of two pairs of pawls pincers of the clamp seat two sides is by same
The connecting rod rotation connection.
Further, the upper surface of the mainboard is installed with a boss, and the boss center offers piston hole, the piston
Bar can be inserted into vertical with connecting rod in clamp seat be fixedly connected by the piston hole.
Further, the boss is connect with the connection ring by snap fit, so that clamp seat can turn with respect to connection ring
It is dynamic.
It is further, symmetrically fixed on the outer wall of the connection ring that there are two limited block groups；Each limited block group includes
There are two limited blocks, and from connection ring outer wall along the design that radially extends of connection ring, angle between the two is set as two limited blocks
60°。
Further, the outside of the boss is symmetrical fixed there are two round tube, and each round tube is correspondingly arranged at one group
Between two limited blocks of limited block group；
Symmetrical fixed there are two ear mount on the outer wall lower part of the cushion dashpot, the ear mount centre is equipped with pin hole；The circle
Pipe and the pin hole of ear mount correspond, and third pin shaft is inserted into round tube by the pin hole of ear mount.
The invention has the advantages and positive effects of:
(1) the novel steel rail gripping mechanism of the invention can guarantee the chucking power of lasting stability, safe and reliable, simultaneously
It can be realized automated job, improve the efficiency of loading and unloading；
(2) the rail gripping mechanism of the invention can ensure rail safety, steadily, rapidly load and unload；Hydraulic-driven
When unit acts, guarantees that the power of output can be efficiently transferred to pawl pincers by piston rod, do not meet clamping stagnation and transmission efficiency is high；
By optimizing clamp structure, clamp is made to move flexible, reliable and guaranteeing good working efficiency, meet application requirement；
(3) the rail gripping mechanism of the invention is controlled by hydraulic coupling, and spring force is equipped in hydraulic cylinder as resistance
Power can play the role of piston speed limit, ensure robust motion；In the case where aneroid pressure-driven or hydraulic coupling fail, pawl pincers
Also achievable closed action under spring force, therefore spring can play the role of safeguard protection；
(4) cylinder body and jaw portion of the invention can rotate, and press from both sides to guarantee to be finely tuned according to location of rail
Angle of nip degree guarantees the accurate clamping to rail, while rotational angle is limited by limited block, prevents angle is excessive from causing to grasp
It is inconvenient to make.
Detailed description of the invention
Fig. 1 is the overall schematic of the gripping mechanism in embodiment；
Fig. 2 is the main view of the gripping mechanism in embodiment；
Fig. 3 is the side view of the gripping mechanism in embodiment；
Fig. 4 is the top view of the gripping mechanism in embodiment；
Fig. 5 is the main view of hydraulic drive unit in embodiment；
Fig. 6 is the side view of hydraulic drive unit in embodiment；
Fig. 7 is the top view of hydraulic drive unit in embodiment；
Fig. 8 is the cross-sectional view in the face A-A in Fig. 7；
Fig. 9 is the main view of clamp seat in embodiment；
Figure 10 is the side view of clamp seat in embodiment；
Figure 11 is the top view of clamp seat in embodiment；
Figure 12 is the bottom view of clamp seat in embodiment；
Figure 13 is the overall schematic of gripping mechanism in embodiment (concealing clamp seat)；
Figure 14 is the main view of gripping mechanism in embodiment (concealing clamp seat)；
Figure 15 is the side view of gripping mechanism in embodiment (concealing clamp seat)；
Figure 16 is the top view of gripping mechanism in embodiment (concealing clamp seat).
In figure: 1- hydraulic drive unit, 11- cylinder body ontology, 111- oil inlet, 112- oil return opening, 12- cushion dashpot, 121-
Spring, 122- spring base, 123- ear mount, 13- piston rod, 131- connecting tube, 2- nipper units, 21- clamp seat, 211- round tube,
212- mainboard, 213- side plate, 214- supporting plate, 215- gusset, 216- boss, 22- pawl pincers, 23- adjusting block, the first pin shaft of 24-,
The second pin shaft of 25-, 3- connecting rod, 4- connection ring, 41- limited block, 5- third pin shaft.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.
In the description of the invention, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.In the description of the invention, unless separately
It is described, the meaning of " plurality " is two or more.
In the description of the invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
The present embodiment is to provide a kind of novel steel rail gripping mechanism, which is controlled by hydraulic drive unit 1
The closure and opening of pawl pincers 22, and then rail is clamped；The gripping mechanism includes from top to bottom sequentially connected liquid
Press driving unit 1, connection ring 4 and nipper units 2；The hydraulic drive unit 1 and nipper units 2 can be 4 turns with respect to connection ring
It is dynamic, while the hydraulic drive unit 1 completes the driving to nipper units 2 by connecting rod 3；
The hydraulic drive unit 1 includes oil cylinder, and the oil cylinder includes the buffering of the cylinder body ontology 11 on top, lower part
Cylinder 12, the piston rod 13 by being pierced by cylinder body ontology 11 and being arranged through cushion dashpot 12；The top and bottom of the cushion dashpot 12
Portion, which is equipped with, passes through through-hole for piston rod 13, and piston rod 13 enters cushion dashpot 12 from cylinder body ontology 11, and is stretched out by cushion dashpot 12
It is formed and is connected with nipper units 2；The side wall of the cylinder body ontology 11 is equipped with oil inlet 111 and oil return opening 112, for controlling work
The raising and lowering of stopper rod 13；
A spring 121 is equipped in the cushion dashpot 12, the spring 121 is sheathed on 13 periphery of piston rod, the piston rod
13 top is fixedly provided with spring base 122, and the spring 121 is located between 12 cylinder bottom of spring base 122 and cushion dashpot；Work as piston rod
13 when stretching out cushion dashpot 12, and band 122 compressed spring 121 of flexible spring seat, when piston rod 13 bounces back, the spring base 122 is in bullet
It is moved upwards under the active force that spring 121 is sprung back；
The bottom of the cushion dashpot 12 and the connection ring 4 are by copper sheathing clamping, so that the cushion dashpot 12 can be relative to
Connection ring 4 rotates.
The nipper units 2 include clamp seat 21, pawl pincers 22；
The clamp seat 21 is door type structure, includes mainboard 212 and the side plate 213 for being vertically located in 212 two sides of mainboard,
212 bottom of mainboard is fixed there are four the supporting plate 214 for being in distributed rectangular, and the supporting plate 214 is arranged in parallel with side plate 213；Institute
It states and is fixedly connected between supporting plate 214 and mainboard 212 by the reinforcement of gusset 215；The upper surface of the mainboard 212 is installed with a boss
216,216 center of boss offers piston hole, and the piston rod 13 can be inserted into clamp seat 21 by the piston hole；
The boss 216, which is clamped with the connection ring 4 by copper sheathing, to be connected, so that clamp seat 21 can be 4 turns with respect to connection ring
It is dynamic；
For the clamp seat 21, rotation is equipped with a pair of of pawl between the mainboard 212 of every side and two supporting plates 214 of the side
Pincers 22, this is rotatablely connected each pawl pincers 22 that pawl clamps by the first pin shaft 24 with mainboard 212 and corresponding supporting plate 214, led to
It crosses this and clamping that can be realized to rail is opened and closed to the mutual of pawl pincers 22；
It is the crozier structure be curved to the inside that the pawl, which clamps 22 bottoms, and the top of the pawl pincers 22 opens up fluted, institute
Slot opening is stated towards 22 setting of opposite side pawl pincers；An adjusting block 23 is equipped with by the rotation of the second pin shaft 25 in the groove, it is ipsilateral
It is rotatablely connected between two adjusting blocks 23 of a pair of of pawl pincers 22 by the connecting rod 3, further, 21 two sides of clamp seat
The adjusting blocks 23 of two pairs of pawls pincers 22 be rotatablely connected by the same connecting rod 3, i.e., the described connecting rod 3 is clamped through two pairs of pawls
It is arranged between 22；
In order to realize that the hydraulic drive unit 1 drives the clamping of nipper units 2, the piston rod 13 and connecting rod
3 are vertically fixedly connected, and specifically, the bottom of the piston rod 13 is vertically installed with a connecting tube 131, and the connecting rod 3 is arranged
In in the connecting tube 131, in this way, the connection can be driven when piston rod 13 is driven linear motion up and down by oil cylinder
Bar 3 moves up and down, and then two adjusting blocks 23 of every side is driven to relatively rotate, due to being rotation between adjusting block 23 and pawl pincers 22
Connection is rotation connection between pawl pincers 22 and clamp seat 21, i.e., when piston rod 13 moves along a straight line under oil cylinder driving, leads to
It crosses at three and is rotatablely connected secondary, 22 folding of band pawl pincers, to realize the clamping and release to rail.
It is described hydraulic in order to guarantee that can finely tune pawl according to location of rail clamps 22 angles, guarantees the accurate clamping to rail
Driving unit 1 and nipper units 2 can be rotated relative to connection ring 4, simultaneously because the connection function of connecting rod 3, the hydraulic drive
Moving cell 1 and nipper units 2 can be rotated relative to connection ring 4 simultaneously；In order to make the rotational angle of the two in suitable section,
It avoids slewing area is excessive from leading to the 22 bad control of clamping of pawl pincers, influences clamp efficiency, it is symmetrical on the outer wall of the connection ring 4
41 groups of two groups of limited blocks are installed with, 41 groups of each limited block include there are two limited block 41, and two limited blocks 41 connect certainly
For 4 outer wall of ring along the design that radially extends of connection ring 4, angle between the two is set as 60 °；For the clamp seat 21, described
The outside of boss 216 is symmetrically fixed, and there are two round tubes 211, and in gripping mechanism installation, each round tube 211 is correspondingly arranged
Between one group 41 groups of limited block of two limited blocks 41, when so that nipper units 2 rotating, hunting range is ± 30 °；
In order to guarantee that the clamp seat 21 is synchronous with the rotation of hydraulic drive unit 1, under the outer wall of the cushion dashpot 12
It is symmetrical fixed there are two ear mount 123 in portion, pin hole is equipped among the ear mount 123；The pin hole of the round tube 211 and ear mount 123
It corresponds, third pin shaft 5 is inserted into round tube 211 by the pin hole of ear mount 123, the nipper units 2 and liquid can be realized
Press the synchronous rotation of driving unit 1, stabilization when holding claws pincers 22 clamp.
When it is implemented, passing through institute when piston rod 13 moves along a straight line under the hydraulic oil driving of cylinder body ontology 11
It states and is rotatablely connected secondary, 22 folding of band pawl pincers, to realize the clamping and release to rail at the three of clamp seat 21.When to operating condition
Under rail crawl when, can be finely tuned as needed in 41 range of limited block pawl pincers 22 angle, facilitate crawl；
About the effect of cushion dashpot 12, when piston rod 13 moves downward (oil inlet 111 is opened, and oil return opening 112 is closed),
Pawl pincers 22 open, and are controlled by hydraulic coupling, and spring force can play the role of speed limit as resistance, ensure robust motion；Work as piston
When bar 13 moves upwards (oil inlet 111 is closed, and oil return opening 112 is opened), 22 closure of pawl pincers is controlled by hydraulic coupling with spring force jointly
System can install adjustable one-way throttle valve additional, prevent closed action too fast to keep movement steady in cushion dashpot 12；In addition, in aneroid
In the case that pressure-driven or hydraulic coupling fail, also achievable closed action, spring 121 have pawl pincers 22 under spring force
Safeguard protection effect.
Two connection shanks are also symmetrically arranged on the outer wall of the connection ring 4, which is used for entire clamp
Device is installed to the rotating mechanical arm of operating trolley, so that gripping mechanism to be moved near location of rail, recycles clamp
Device completes rail clamping, and rotating mechanical arm completes handling again by the gripping mechanism whole Transporting for accompanying rail to required position.
The embodiment of the invention is described in detail above, but the content is only the preferable of the invention
Embodiment should not be considered as limiting the invention the practical range of creation.It is all according to made by the invention application range
Deng variation and improvement etc., shall remain within the patent scope covered by the invention.
Claims (10)
1. a kind of novel steel rail gripping mechanism, which is characterized in that the gripping mechanism include top hydraulic drive unit and
The nipper units of lower part；The hydraulic drive unit completes the driving to nipper units by connecting rod；
The hydraulic drive unit includes oil cylinder, and the oil cylinder includes piston rod, and the piston rod is vertical with connecting rod
It is fixedly connected；
The nipper units include that clamp seat, pawl pincers and adjusting block, the piston rod and adjusting block are rotated by connecting rod and connected
It connects, the adjusting block and pawl are clamped and be rotatablely connected by pin shaft, and the pawl pincers and clamp seat are rotatablely connected also by pin shaft；Work as piston
It is secondary by being rotatablely connected at three when bar moves along a straight line under hydraulic oil driving, band pawl pincers folding, so that realization is to rail
Clamping and release；
The gripping mechanism further includes the connection ring having between hydraulic drive unit and nipper units, the bottom of the oil cylinder
It is clamped with the connection ring by copper sheathing, the hydraulic drive unit is rotated relative to connection ring；The nipper units with it is described
Connection ring is clamped also by copper sheathing, and the nipper units can be rotated relative to connection ring.
2. a kind of novel steel rail gripping mechanism as described in claim 1, which is characterized in that the bottom of the piston rod is vertically solid
Equipped with a connecting tube, the connecting rod is sheathed in the connecting tube.
3. a kind of novel steel rail gripping mechanism as described in claim 1, which is characterized in that the oil cylinder further includes having top
Cylinder body ontology, lower part cushion dashpot, be equipped at the top and bottom of the cushion dashpot and pass through through-hole, the piston rod for piston rod
Enter cushion dashpot from cylinder body ontology, and is stretched out by cushion dashpot and connect with connecting rod；The side wall of the cylinder body ontology is equipped with oil inlet
Mouth and oil return opening.
4. a kind of novel steel rail gripping mechanism as claimed in claim 3, which is characterized in that be equipped with a bullet in the cushion dashpot
Spring, the spring pocket are set to piston rod periphery, and the top of the piston rod is fixedly provided with spring base, and the spring is located at spring base
Between cushion dashpot cylinder bottom；When piston rod, which stretches out cushion dashpot, to be moved downward, band flexible spring seat compressed spring, when piston rod bounces back
When, the spring base moves upwards under the active force of recoil of spring.
5. a kind of novel steel rail gripping mechanism as claimed in claim 4, which is characterized in that the bottom of the cushion dashpot with it is described
Connection ring is clamped by copper sheathing.
6. a kind of novel steel rail gripping mechanism as claimed in claim 5, which is characterized in that the nipper units include clamp
Seat, pawl pincers；
The clamp seat is door type structure, includes mainboard and the side plate for being vertically located in mainboard two sides, and the mainboard bottom is solid
If there are four the supporting plate for being in distributed rectangular, the supporting plate is arranged in parallel with side plate；Added between the supporting plate and mainboard by gusset
It is fixedly connected by force；
Rotation is equipped with a pair of pawl pincers between the mainboard of every side and two supporting plates of the side, this is to each pawl pincers of pawl pincers and master
Plate and corresponding supporting plate pass through the rotation connection of the first pin shaft；
Pawl pincers bottom is the crozier structure be curved to the inside, and the top of the pawl pincers opens up fluted, and the groove is opened
Mouth is clamped towards opposite side pawl to be arranged；It is rotated in the groove by the second pin shaft and is equipped with an adjusting block, two of ipsilateral a pair of pawl pincers
It is rotatablely connected between adjusting block by the connecting rod；The adjusting block of two pairs of pawls pincers of the clamp seat two sides is by same described
Connecting rod rotation connection.
7. a kind of novel steel rail gripping mechanism as claimed in claim 6, which is characterized in that the upper surface of the mainboard is installed with
One boss, the boss center offer piston hole, and the piston rod can be inserted by the piston hole in clamp seat and connecting rod
Vertically it is fixedly connected.
8. a kind of novel steel rail gripping mechanism as claimed in claim 7, which is characterized in that the boss and the connection ring are logical
Snap fit connection is crossed, so that clamp seat can be rotated relative to connection ring.
9. a kind of novel steel rail gripping mechanism as claimed in claim 8, which is characterized in that symmetrical on the outer wall of the connection ring
It is fixed that there are two limited block groups；Each limited block group includes there are two limited block, and two limited blocks are from connection ring outer wall edge
Connection ring radially extends design, and angle between the two is set as 60 °.
10. a kind of novel steel rail gripping mechanism as claimed in claim 9, which is characterized in that the outside of the boss is symmetrically solid
If there are two round tube, each round tube is correspondingly arranged between two limited blocks of one group of limited block group；
Symmetrical fixed there are two ear mount on the outer wall lower part of the cushion dashpot, the ear mount centre is equipped with pin hole；The round tube with
The pin hole of ear mount corresponds, and third pin shaft is inserted into round tube by the pin hole of ear mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821186632.1U CN208776206U (en) | 2018-07-25 | 2018-07-25 | A kind of novel steel rail gripping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821186632.1U CN208776206U (en) | 2018-07-25 | 2018-07-25 | A kind of novel steel rail gripping mechanism |
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| Publication Number | Publication Date |
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| CN208776206U true CN208776206U (en) | 2019-04-23 |
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ID=66154809
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| CN201821186632.1U Active CN208776206U (en) | 2018-07-25 | 2018-07-25 | A kind of novel steel rail gripping mechanism |
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| CN (1) | CN208776206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706444A (en) * | 2018-07-25 | 2018-10-26 | 天津电力机车有限公司 | A kind of rail gripping mechanism using hydraulic control |
-
2018
- 2018-07-25 CN CN201821186632.1U patent/CN208776206U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706444A (en) * | 2018-07-25 | 2018-10-26 | 天津电力机车有限公司 | A kind of rail gripping mechanism using hydraulic control |
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