CN108274613A - A kind of tensioning combining mechanism - Google Patents
A kind of tensioning combining mechanism Download PDFInfo
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- CN108274613A CN108274613A CN201810196940.0A CN201810196940A CN108274613A CN 108274613 A CN108274613 A CN 108274613A CN 201810196940 A CN201810196940 A CN 201810196940A CN 108274613 A CN108274613 A CN 108274613A
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- Prior art keywords
- tensioning
- driving
- rack
- pivoted housing
- stretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a kind of tensioning combining mechanisms, it includes two tensioning joining racks being oppositely arranged, it is connected with to act against on the tensioning joining rack and abuts against bar on railway plate die, it is corresponding equipped with the stretching rack driven by stretch power mechanism on two opposite tensioning joining racks, the inner end of stretching rack is equipped with the fixation tensioning pawl stretched into for the abnormity nut of the tension rod on railway plate die, tension stress monitoring device is connected on stretching rack, it is rotatably connected on the stretching rack by the driving pivoted housing of locking power device driving rotation, the rotation of driving pivoted housing drives the locking nut on tension rod to rotate and abuts against the side wall of railway plate die.Tensioning boom end can be fast and accurately clamped to realize tensioning and can fix tension rod after tensioning in the present invention, and multistory reinforced prestressing force is made to be consistent, and have the advantages that the track plates quality of production is effectively ensured and improve labor efficiency.
Description
Technical field
The present invention relates to a kind of tensioning combining mechanisms.
Background technology
Currently, with the continuous development of China express railway standard of construction, ballastless track structure form is generally used.For
The ballastless track structure pattern adapted under different operation conditions is improved, is carried for the going global development strategy of China express railway
For strong technical support, the Ministry of Railways organizes III plate-type ballastless track structures of relevant unit's independent research CRTS.
III type track plates of CRTS（Pre-stress rail plate）In process of production, it needs to carry out following processing step, first have to
Clear mould, to ensure track plates Surface Quality of Concrete, after template is cleaned out, one layer of releasing agent of even application；Secondly it carries out
The installation lifting of service sleeve, steel reinforcement cage be put into and mantle fiber, after mantle fiber, reinforcing bar just pre-tighten, cushion block is placed into
After carry out reinforced bar stretching, carry out Insulation monitoring after tensioning；Finally, concrete is put into mold and is vibrated, steam curing
After put, tear open and demoulding, then carry out water-bath maintenance.
In the technical process of reinforced bar stretching, need to make reinforcing bar that there is centainly pre- reinforcing bar progress tension using stretching machine
Stress, according to the production requirement of pre-stress rail plate, vertically and horizontally reinforcing bar should use single-ended single simultaneous tension mode to track plates, and
It being controlled with single tendon stretch force value, the tensioning of reinforcing bar should be uniform, and loading speed and stretching force all have stringent quantity regulation,
It should be locked after tensioning.I.e. stretching machine needs to complete two work, by reinforced bar stretching and locking, first, the end of reinforcing bar
Portion connects tension rod（Make the two combine by first Zhang Gong's skill to pre-tighten）, the end of tension rod is abnormity nut, in stretching process,
The joint head of stretching machine needs to grasp the abnormity nut, and existing stretching machine can not achieve quick and accurate clamping, thus labor
Efficiency of movement is low；Secondly, during locking, needing will be fixed on the outside of tension rod and railway plate die, to make reinforcing bar keep
Prestressing force, existing stretching machine can not achieve above-mentioned fixation, thus the problem that the prestressing force for be easy to causeing more reinforcing bars is inconsistent,
To make the quality of production of track plates decline.
Invention content
The technical problem to be solved by the present invention is to, provide a kind of tensioning rod end can fast and accurately be clamped in view of the foregoing drawbacks
Portion makes composite steel to realize tensioning and can fix the pre-stress rail plate reinforced bar stretching machine of tension rod after tensioning
The prestressing force of muscle is consistent.
In order to solve the above-mentioned technical problem, the tensioning combining mechanism provided includes two tensioning joining racks being oppositely arranged,
It is structurally characterized in that：The bar that abuts against that can be acted against on railway plate die, two opposite tensioning are connected on the tensioning joining rack
Corresponding equipped with the stretching rack driven by stretch power mechanism on joining rack, the inner end of stretching rack is equipped on railway plate die
The fixation tensioning pawl that the abnormity nut of pull rod stretches into is connected with tension stress monitoring device, the tensioning joining rack on stretching rack
On be rotatably connected to by locking power device driving rotation driving pivoted housing, drive the rotation of pivoted housing to drive the locking on tension rod
Nut rotation and the side wall for abutting against railway plate die.
With the above structure, present invention utilizes the abnormity nuts that tension rod itself has, and so that abnormity nut is located at solid
Determine in tensioning pawl, realizes the fast and accurately clamping of tensioning boom end, and carried out to tension rod by stretch power mechanism
Effective tensioning, opposite two stretching racks carry out tensioning to same root reinforcing bar, while simultaneously by tension stress monitoring device record
Detection tension stress is acted against by abutting against bar on railway plate die to realize the prestressing force of accurate control reinforcing bar, can be with
It effectively prevent moving in stretching process middle orbit board mold, to ensure position of the reinforcing bar in railway plate die, to improve
Product quality makes the rotation of driving pivoted housing to make locking nut rotate, by tension rod additionally by the power drive of locking device
It is locked with the position of railway plate die, ensure that the prestressing force consistency of more reinforcing bars, improve product quality.
As an improvement, the fixed tensioning pawl includes the corresponding two claw arms for being hinged on stretching rack both sides, the tensioning knot
It closes on frame equipped with claw arm inner end when claw arm inner end is drawn close relatively, two claw arms move out when two claw arms inwardly move
The limit driving device being located remotely from each other.The outer surface of the claw arm is two planes being arranged in turning shape, the limit driving
Device is the limited post being connected on tensioning joining rack, and limited post is fitted on the outer surface of claw arm, when initial position, tensioning
Actuating unit drives stretching rack inwardly to slide, and the position-limiting action that the lateral surface of claw arm encounters limited post makes the inner ends of two claw arms
Be located remotely from each other open-shaped state, for tension rod abnormity nut be caught in the two claws arm between, stretch power mechanism drive tensioning
When frame slides outward, under the position-limiting action of limited post, opposite draw close in claw arm inner end clamps when two claw arms inwardly move
The abnormity nut realizes the fast and accurately clamping of tensioning boom end.
The stretch power mechanism includes the tensioning oil cylinder being connected on tensioning joining rack, the tension stress monitoring device
Displacement sensor including the skidding distance for being connected to monitoring stretching rack, pressure sensing is equipped on the piston rod of the tensioning oil cylinder
Device.
The locking power device includes being rotatably connected on the driving sleeve gear driven by power motor on tensioning joining rack,
The driving pivoted housing outer wall connect and can be sleeved on tension rod with driving pivoted housing gear transmission, drives the inner end of pivoted housing to be equipped with and drives
The driving rotary head for making locking nut rotate.
As a further improvement, the driving pivoted housing includes the driving rotary head that can be sleeved on tension rod and drive sleeve,
Driving rotary head is connect with drive sleeve by self-centering structural dynamic, and drive sleeve passes through spline and driving pivoted housing gear transmission
Connection, equipped with driving top spring between drive sleeve and tensioning joining rack.The self-centering structure includes being screwed onto driving rotary head
Outer end and along driving rotary head symmetrical two centering studs is equipped in the driving rotary head and stretches into drive sleeve and position and centering
The corresponding arms of stud, drive sleeve are equipped with saddle, and saddle can be on saddle equipped with the jack and arms being inserted into for arms
Along drive sleeve radial slippage, the be connected by power of driving rotary head and drive sleeve is realized under the cooperation of arms and saddle, it is described
The bottom of centering stud is equipped with the baffle being sleeved on centering stud and the bottom surface of baffle offsets with saddle, baffle and centering stud
Head between equipped with centering top spring.By the setting of above structure, driving rotary head is realized to the locking nut on tension rod
Power drive, to realize the locking of tension rod and railway plate die, and when tension rod is with driving rotary head decentraction
（In reality, it is difficult to ensure that every tension rod is all arranged concentrically with driving rotary head）, drive rotary head that can suitably swing, realize automatic
Centering, to which power drive of the driving rotary head to the locking nut on tension rod be effectively ensured.
In conclusion said program has the following advantages compared with prior art：The present invention, which can fast and accurately be clamped, to open
Tie rod end makes multistory reinforced prestressing force keep one to realize tensioning and can fix tension rod after tensioning
It causes, have the advantages that the track plates quality of production is effectively ensured and improves labor efficiency.
Description of the drawings
The specific implementation mode of the present invention is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is the structural schematic diagram that an embodiment of the present invention is connected on stretching machine；
Fig. 2 is the structural schematic diagram of the present invention；
Fig. 3 be in Fig. 2 A to structural schematic diagram；
Fig. 4 is the stereoscopic schematic diagram of tensioning joining rack internal structure；
Fig. 5 is the structural schematic diagram that locking power device drives driving pivoted housing rotation；
Fig. 6 is the structural schematic diagram of the line B-B section view along Fig. 5；
Fig. 7 is the structural schematic diagram of the line C-C section view along Fig. 6；
Fig. 8 is the structural schematic diagram of railway plate die.
Specific implementation mode
As shown in figure 8, the applicant has made a kind of railway plate die 20, substantially to produce pre-stress rail plate
Structure is identical as railway plate die in the prior art, which has die cavity, structure and shape in the die cavity
All in order to make pre-stress rail plate, concrete structure is fitted on the side wall of railway plate die 20 and opens without repeating one by one
The end of pull rod 21, tension rod is equipped with abnormity nut 211, can screw this using mechanical system or manual type by spanner
Pull rod, to realize that the end of reinforcing bar and the combination of tension rod, existing equipment cannot achieve the quick and accurate of tension rod
Clamping, thus tensioning inefficiency and of poor quality, the middle part of tension rod 21 is additionally provided with the thread segment being exposed on the outside of railway plate die,
Be bolted with locking nut 212 on thread segment, after tension reinforcing steel bar, screw the locking nut on the thread segment, make tension rod with
Railway plate die is fixed, and is exactly to realize above-mentioned stretching process and locking process to keep the pretightning force of reinforcing bar, the present invention.
As shown in Figure 1, The present invention gives a kind of embodiment of pre-stress rail plate reinforced bar stretching machine structure, illustrated in figure
Be structure that the embodiment of the present invention is connected on stretching machine, which includes tensioning rack 1, in the tensioning rack 1
It slidably connects and is oppositely arranged on the outside of two opposite side of railway plate die and drives the tensioning of synchronization lifting to slide by actuating unit
Frame 2 slidably connects in the tensioning rack 1 and is oppositely arranged on the outside of two opposite side of railway plate die and is driven by actuating unit
The tensioning sliding rack 2 of synchronization lifting, the tensioning sliding rack 2 are slidably connected at tensioning rack 1 by the structure of slide plate and guide rail
On, naturally it is also possible to it is slidably connected using the structure realization of such as guide sleeve and guide post is above-mentioned, the actuating unit includes being connected to
In tensioning rack 1 and by the vertical leading screw of engine driving rotation, engine is that private takes motor, and spiral shell is connected in tensioning sliding rack
The screw being connected on vertical leading screw.In order to improve the stability of tensioning rack and the stability of tensioning sliding rack lifting, at this
In embodiment, the tensioning rack 1 is substantially square comprising and four columns, column are connected on the ground by foundation bolt,
It is connected with connecting cross beam at the top of adjacent two root posts, to form stable tower structure, four of the tensioning rack
Corner is respectively provided with vertical leading screw, i.e., four leading screws are arranged altogether, and the vertical leading screw is rotatably connected in column, and setting is opposite altogether sets
The four tensioning sliding racks set, the screw are connected to the both ends of tensioning sliding rack, i.e., control multiple private clothes by controller
Motor synchronizes driving leading screw rotation, to make tensioning sliding rack smoothly lift.
As shown in Figure 1, being connected in tensioning sliding rack 2 by combining slid inside and outside actuating unit drives edge tensioning rack
Draw joining rack 3, in the present embodiment, be provided with two pairs of opposite tensioning joining racks 3, i.e., simultaneously to the reinforcing bars of vertical and horizontal into
Row tensioning, inside and outside meaning in the present invention：Railway plate die is placed at the middle part of tensioning rack, close to the portion of railway plate die
Position is the inside of tensioning rack, is its outside far from railway plate die, and tensioning joining rack 3 is slidably connected in tensioning sliding rack 2,
The combination actuating unit includes the actuator cylinder being connected in tensioning sliding rack 2, the tensioning joining rack 3 and actuator cylinder
Piston rod be connected by power.
As shown in Figures 1 to 4, it is connected with to act against on the tensioning joining rack 3 and abuts against bar 4 on railway plate die,
It is corresponding equipped with the stretching rack 5 driven by stretch power mechanism on two opposite tensioning joining racks 3, that is, it is opposite to be located at railway plate die
The stretching rack of both sides is oppositely arranged, and two opposite stretching racks can pull the both ends of reinforcing bar simultaneously, and the inner end of stretching rack 5, which is equipped with, to be supplied
The fixation tensioning pawl 6 that the abnormity nut of tension rod on railway plate die stretches into, the fixed tensioning pawl 6 include that correspondence is hinged on
Two claw arms of stretching rack both sides, on the tensioning joining rack 3 equipped with when two claw arms inwardly move claw arm inner end it is opposite
It draws close, the limit driving device that claw arm inner end is located remotely from each other when two claw arms move out；In the present embodiment, the claw
The outer surface of arm is two planes being arranged in turning shape, and the limit driving device is the limit being connected on tensioning joining rack 3
Column 31, limited post are fitted on the outer surface of claw arm, and when initial position, stretch power mechanism drives stretching rack inwardly to slide,
The position-limiting action that the lateral surface of claw arm encounters limited post makes the inner end of two claw arms be located remotely from each other open-shaped state（That is in Fig. 3
State）, the abnormity nut 211 of tension rod is caught between the two claws arm, and stretch power mechanism drives stretching rack 5 to slide outward
When, under the position-limiting action of limited post 31, opposite draw close in claw arm inner end clamps the abnormity spiral shell when two claw arms inwardly move
Mother 211, realizes the fast and accurately clamping of tensioning boom end.Certain above-mentioned limit driving device can also use following knots
Corresponding track is arranged on tensioning joining rack 3 and is limited by track when being moved inside and outside two claw arms of fixed tensioning pawl for structure
System, to claw arm inner end when claw arm inner end is drawn close relatively when realizing that two claw arms inwardly move, two claw arms move out
It is located remotely from each other, in this not go into detail.
Referring to figs. 2 and 3, tension stress monitoring device is connected on stretching rack 5, the stretch power mechanism includes connection
In the tensioning oil cylinder 8 of tensioning joining rack 3, the tension stress monitoring device includes being connected to the skidding distance of monitoring stretching rack 5
Displacement sensor 9, specifically, displacement sensor 9 is connected between piston rod end and the outer wall of tensioning oil cylinder 8, described
Pressure sensor 10 is housed, specifically, which is that piston rod stretches out cylinder sleeve on the piston rod of tensioning oil cylinder 8
The bi-directional drive oil cylinder at both ends, the inner end of piston rod are connect with stretching rack, are arranged land on the piston rod of outer end, piston rod it is outer
End is bolted with screw rod, and above-mentioned pressure sensor is sleeved in land and the outer end of pressure sensor and the head of screw rod offset, and leads to
The monitoring for crossing the displacement sensor and pressure sensor fully ensures that the dynamics of tensioning and the extension elongation of reinforcing bar, that is, ensures
Reinforcing bar has suitable prestressing force.
With reference to figure 2, Fig. 5, Fig. 6 and Fig. 7, it is rotatably connected on the tensioning joining rack 3 and is turned by the driving of locking power device
The rotation of dynamic driving pivoted housing 7, driving pivoted housing 7 drives the locking nut on tension rod to rotate and abuts against the side of railway plate die
Wall.The locking power device includes being rotatably connected on the driving sleeve gear 12 driven by power motor 11 on tensioning joining rack 3,
Driving pivoted housing gear is engaged with the driving gear on the power output shaft of power motor in the present embodiment, the driving pivoted housing 7
Outer wall connect and can be sleeved on tension rod with driving pivoted housing gear transmission, and the inner end of driving pivoted housing 7, which is equipped with, drives locking nut
The driving rotary head 71 of rotation.The driving pivoted housing 7 includes driving rotary head 71 and the drive sleeve 72 that can be sleeved on tension rod,
In the present embodiment, the end of driving rotary head 71 is cross claw, and the locking nut on above-mentioned tension rod is cross nut, cross clip
Pawl and the cooperation of cross nut drive the locking nut, driving rotary head 71 to connect by self-centering structural dynamic with drive sleeve 72
It connects, drive sleeve 72 is equipped with by spline and 12 be connected by power of driving pivoted housing gear between drive sleeve 72 and tensioning joining rack
Driving top spring 73, after tensioning, power motor, which starts, drives driving pivoted housing gear 12 to rotate, to drive 72 turns of drive sleeve
Dynamic, driving rotary head 71 drives locking nut to rotate, and so that tension rod is fixed with railway plate die, to keep the pretightning force of reinforcing bar.
It is generally known that due in pre-stress rail plate should prefabricated more crisscross reinforcing bars, thus multiple driving rotary heads 71 with
In the cohesive process of multiple locking nuts, unavoidable appearance drives the problem of rotary head is with locking nut decentraction, is susceptible to
In conjunction with insecure, in the present embodiment, the self-centering structure includes being screwed onto driving rotary head outer end and along driving rotary head pair
The two centering studs 13 claimed, equipped with stretching into drive sleeve 72 and position is corresponding with stud 13 of feeling relieved slotting in the driving rotary head
Arm, arms is trapezoidal, and drive sleeve 72 is equipped with saddle, and saddle is equipped with the jack being inserted into for arms（Jack is also trapezoidal）And
Arms can realize driving rotary head and drive sleeve in saddle upper edge drive sleeve radial slippage under the cooperation of arms and saddle
The bottom of be connected by power, the centering stud is equipped with bottom surface and the saddle phase of the baffle 14 being sleeved on centering stud and baffle
It supports, equipped with centering top spring 15 between baffle 14 and the head for stud of feeling relieved, that is to say, that when driving rotary head is different from locking nut
When the problem of heart occurs, driving rotary head 71 makes driving rotary head radial slippage certain distance by the fit structure of arms and jack,
Meanwhile top spring compression of feeling relieved, until driving rotary head is combined with locking nut, since driving rotary head can be turned in actuating unit
It is dynamic, thus decentraction at any angle, it can all be adjusted, driving rotary head is made to be combined with locking nut, to be effectively ensured
The process of above-mentioned driving locking nut.
The above is the specific constructive form of the present invention, and the present invention is not limited to the above embodiments, is led in this technology
For the personnel of domain, equivalent variations and part replacement based on concrete structure in the present invention are all within the scope of the present invention.
Claims (7)
1. a kind of tensioning combining mechanism, including the two tensioning joining racks that are oppositely arranged（3）, it is characterized in that：The tensioning joining rack
（3）On be connected with to act against and abut against bar on railway plate die（4）, two opposite tensioning joining racks（3）Upper correspondence be equipped with by
The stretching rack of stretch power mechanism driving（5）, stretching rack（5）Inner end be equipped with for the tension rod on railway plate die special-shaped spiral shell
The fixation tensioning pawl that mother stretches into（6）, stretching rack（5）On be connected with tension stress monitoring device, the tensioning joining rack（3）It is upper to turn
It is dynamic to be connected with by the driving pivoted housing of locking power device driving rotation（7）, drive pivoted housing（7）Rotation drive the lock on tension rod
Tight nut rotation and the side wall for abutting against railway plate die.
2. tensioning combining mechanism according to claim 1, it is characterized in that：The fixed tensioning pawl includes that corresponding be hinged on is opened
It tries to stop people from fighting each other two claw arms of both sides, the tensioning joining rack（3）It is opposite that the claw arm inner end when two claw arms inwardly move above is housed
It draws close, the limit driving device that claw arm inner end is located remotely from each other when two claw arms move out.
3. tensioning combining mechanism according to claim 2, it is characterized in that：The outer surface of the claw arm is to be set in turning shape
Two planes set, the limit driving device are to be connected to tensioning joining rack（3）On limited post（31）, limited post is fitted in card
On the outer surface of pawl arm.
4. tensioning combining mechanism according to claim 1, it is characterized in that：The stretch power mechanism includes being connected to tensioning
Joining rack（3）On tensioning oil cylinder（8）, the tension stress monitoring device includes being connected to monitoring stretching rack（5）Sliding away from
From displacement sensor（9）, the tensioning oil cylinder（8）Piston rod on be equipped with pressure sensor（10）.
5. the tensioning combining mechanism according to any one of claim 1-4, it is characterized in that：The locking power device includes
It is rotatably connected on tensioning joining rack（3）On by power motor（11）The driving sleeve gear of driving（12）, the driving pivoted housing（7）Outside
Wall connect and can be sleeved on tension rod with driving pivoted housing gear transmission, drives pivoted housing（7）Inner end be equipped with drive locking nut
The driving rotary head of rotation（71）.
6. tensioning combining mechanism according to claim 5, it is characterized in that：The driving pivoted housing（7）It is opened including that can be sleeved on
Driving rotary head on pull rod（71）And drive sleeve（72）, drive rotary head（71）With drive sleeve（72）Pass through self-centering structure
Be connected by power, drive sleeve（72）Pass through spline and driving pivoted housing gear（12）Be connected by power, drive sleeve（72）With tensioning knot
Equipped with driving top spring between conjunction frame（73）.
7. tensioning combining mechanism according to claim 6, it is characterized in that：The self-centering structure includes being screwed onto driving
Rotary head outer end and along driving rotary head it is symmetrical two centering studs（13）, equipped with stretching into drive sleeve in the driving rotary head（72）
And position with centering stud（13）Corresponding arms, drive sleeve（72）It is equipped with saddle, saddle is equipped with and is inserted into for arms
Jack and arms can realize driving rotary head and driving in saddle upper edge drive sleeve radial slippage under the cooperation of arms and saddle
The bottom of the be connected by power of sleeve, the centering stud is equipped with the baffle being sleeved on centering stud（14）And the bottom surface of baffle with
Saddle offsets, baffle（14）Equipped with centering top spring between the head of centering stud（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196940.0A CN108274613B (en) | 2018-03-10 | 2018-03-10 | Tensioning combination mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196940.0A CN108274613B (en) | 2018-03-10 | 2018-03-10 | Tensioning combination mechanism |
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| Publication Number | Publication Date |
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| CN108274613A true CN108274613A (en) | 2018-07-13 |
| CN108274613B CN108274613B (en) | 2022-08-23 |
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|---|---|---|---|
| CN201810196940.0A Active CN108274613B (en) | 2018-03-10 | 2018-03-10 | Tensioning combination mechanism |
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| CN109333811A (en) * | 2018-11-30 | 2019-02-15 | 山东豪迈机械制造有限公司 | A kind of clamp system and tensioning equipment |
| CN112504845A (en) * | 2020-12-04 | 2021-03-16 | 湖南飞沃新能源科技股份有限公司 | Bar-shaped object tension testing device and method |
| CN114654219A (en) * | 2022-05-26 | 2022-06-24 | 山东建筑大学 | Mechanical hand for screwing special-shaped nut |
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| CN109333811A (en) * | 2018-11-30 | 2019-02-15 | 山东豪迈机械制造有限公司 | A kind of clamp system and tensioning equipment |
| CN112504845A (en) * | 2020-12-04 | 2021-03-16 | 湖南飞沃新能源科技股份有限公司 | Bar-shaped object tension testing device and method |
| CN112504845B (en) * | 2020-12-04 | 2023-10-13 | 湖南飞沃新能源科技股份有限公司 | Device and method for stretching and testing rod-shaped objects |
| CN114654219A (en) * | 2022-05-26 | 2022-06-24 | 山东建筑大学 | Mechanical hand for screwing special-shaped nut |
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| CN108274613B (en) | 2022-08-23 |
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Address after: 262604 No. 1020, Changxing Road, industrial park, Wujing Town, Linqu County, Weifang City, Shandong Province Patentee after: Shandong High Speed Railway Construction Equipment Co.,Ltd. Address before: 262604 No. 1020, Changxing Road, industrial park, Wujing Town, Linqu County, Weifang City, Shandong Province Patentee before: SHANDONG HIGH SPEED RAIL EQUIPMENT MATERIAL Co.,Ltd. |