CN1030184C - Self-locking rail clamping device - Google Patents
Self-locking rail clamping device Download PDFInfo
- Publication number
- CN1030184C CN1030184C CN 92114920 CN92114920A CN1030184C CN 1030184 C CN1030184 C CN 1030184C CN 92114920 CN92114920 CN 92114920 CN 92114920 A CN92114920 A CN 92114920A CN 1030184 C CN1030184 C CN 1030184C
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- wedge block
- wedge
- tong arm
- rail clamping
- locking rail
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Abstract
The present invention relates to an anti-slide safety device used for a rail travelling type crane, which is a self-locking type rail clamping device. The present invention is composed of a pair of tong arms, the opening and closing mechanism of the tong arms, the opening and closing power component of the tong arms, a control component and a machine frame, wherein the jaws of the pair of the tong arms [6] are respectively provided with a wedge-shaped slide block [11] along the direction of a track; the directions of the wedge angle of the wedge-shaped slide blocks [11] are opposite; each wedge-shaped slide block [11] is provided with a restoring spring [12]; the corresponding tong arm of the large-head end surface of each wedge-shaped slide block [11] is provided with a convex stop shoulder. After the tong arms are closed, the wedge-shaped slide blocks [11] can generate slide on the self-locking wedge surface of the tong arms under the action of the friction of the track. Therefore, the present invention can force the pressure between the wedge-shaped slide blocks [11] and the track to increase until the wedge-shaped slide blocks [11] stops moving.
Description
The present invention is a kind of with crane on track locking non-slip safety device in orbit.
The present more employing clamp-type of the anti-skid device of goliath, it is to produce friction force by the both sides that a pair of clamp is clamped the track top to stop hoisting crane to slide, and is commonly referred to rail clamping device.General rail clamping device commonly used has screw, weight hammer type and spring loaded etc., and the gripping power of these rail clamping devices all is subjected to the constraint of closed power, correspondingly also needs the bigger power that unclamps.Patent a: SU1418273 as former Soviet Union's bulletin on August 23rd, 1988, be exactly a kind of spring loaded rail clamping device, the gripping power of this rail clamping device is a pair of spring force, unclamps the pressure that power is hydraulic actuating cylinder, its gripping power is subjected to the restriction of spring force and hydraulic coupling, and installs, safeguards inconvenience.The unsteady trolley type self-locking rail clamping device that " handling machinery " 1989 the 3rd phases are introduced, the jaw back side of its tong arm is a triangle wedge, tong arm is suspended on the dolly that can relatively move with hoisting crane, have on the frame and the cooresponding V-shaped groove mouth of tong arm triangle wedge, this rail clamping device structure is huge, complicated, restricted application.Chinese patent application numbers 9115557.4 is disclosed to be a kind of roller self-lock mechanism design-calculated rail clamping device that utilizes.It is that respectively to adorn one in the middle and lower part of a pair of tong arm be the center with the roller shaft, and the roller that can horizontally rotate is equipped with tapered bar on the vehicle frame arm plate symmetrically, and the V-shaped groove mouth on roller and the tapered bar fits.Hoisting crane is subjected to external force to do the time spent, drives vehicle frame and tapered bar thereof and moves thereupon, and roller and tapered bar produce relative displacement, and the width between centers of a pair roller is diminished, and forces jaw that the gripping power of track is become big.This rail clamping device must be mentioned whole rail clamping device when unclamping, and therefore needs bigger power.Because between two tapered bars is to link together by two double-screw bolts, in use the nut on the double-screw bolt is loosening easily, can make rail clamping device malfunctioning.Because roller is an intermediate support on the tong arm, the force rate gripping power that the connection double-screw bolt of roller, roller shaft and tapered bar is born is also many greatly, if will improve gripping power must have bigger roller, roller shaft and connect double-screw bolt, and the contact surface between roller and the tapered bar is very little, is easy to generate local impression and wearing and tearing.
The objective of the invention is in order to overcome above-mentioned shortcoming, it is big to utilize jaw wedge block reinforcement principle to design a kind of gripping power, the self-locking rail clamping device that the life-span is long, safe and reliable.
Structure of the present invention is the same with prior art, the a pair of tong arm that is suspended in frame is arranged, two tong arms are hinged near jaw, the other end of two tong arm jaws is equipped with tong arm is opened or closed linkage or weight-driven, and the power part and the electric controling part that can make the switching mechanism motion are housed on the frame.Principal character is at the jaw place of a pair of tong arm direction along ng a path the opposite wedge block of angle of wedge direction to be housed respectively, and retracing spring is housed on the wedge block, and the stop shoulder of a projection is arranged on the cooresponding tong arm of wedge block big end surface.Wedge block also can be one group and stack formula, promptly a wedge block (A) is contained on another wedge block (B), another wedge block (B) is contained on the tong arm again, between two wedge blocks between the angle of wedge direction of sliding surface and wedge block (B) and tong arm the angle of wedge direction of sliding surface opposite, the stop shoulder that a projection is arranged on the cooresponding wedge block of big end surface (B) of wedge block (A) has the stop shoulder of a projection on the cooresponding tong arm of big end surface of wedge block (B).After the closure, wedge block produces on the self-locking wedge surface of tong arm and slides under the effect of track friction tong arm, forces the pressure between wedge block and the track to increase, thereby produces gripping power under power driven.
In order to make wedge block produce gripping power effectively, when adopting the connecting rod switching mechanism, the linkage of tong arm upper end is the two-thread screw that adds an adjustable distance between two articulated joints, and locating piece is set in articulated joint.After linkage arrived dead center position, the locating piece on two linkages withstood mutually, stoped push rod to continue to move down.When adopting weight to open and close, weight is two and half hammers, is connected symmetrically on the guide rod by fastener, between guide rod and half hammer adjusting pad is set, and weight inserts between the roller of tong arm upper end together with guide rod.
Between wedge block and the tong arm, the sliding block joint between wedge block and the wedge block adopts dovetail furrow or "T"-shaped groove assembling form.Retracing spring adopts compression spring and screw rod and the nut of regulating reset force is arranged.
Compare by the existing rail clamping device close with the clamping ability, the present invention has following advantage:
1. Clamping force increases automatically with the increase of hoisting crane motion external force, and clamping process is slowly steady, the strong vibration that can avoid hoisting crane to produce owing to anti-skidding stop is too quickly.
2. because in the reinforcement clamping process, do not have or have only very little masterpiece to be used on the switching mechanism, and only need less closing force can finish initial clamping, so, need unclamp power and initial gripping power is all smaller.
3. owing to be provided with initial gripping power safeguard measure, add commonly used prevent safety method that accident is unclamped and centering adjusting measure etc., make the rail clamping device can the work of safety and reliability ground.
4. be easy to realize simultaneously operation and M/C automatically.
5. because the switching mechanism designs simplification makes cost of the present invention obviously reduce.
6. applied widely.Both can directly be contained on the hoisting crane, and also can make independent dolly and pull on hoisting crane.
Description of drawings:
Fig. 1 is a kind of integral structure scheme drawing of the present invention.
Fig. 2 is the A-A section of Fig. 1, is a kind of jaw structural representation of the present invention.
Fig. 3 is an another kind of jaw structural representation of the present invention.
Fig. 4 is a kind of adjustable linkage structural representation.
Fig. 5 is an another kind of integral structure scheme drawing of the present invention.
Among the figure: 1 lever, 2 pouring weights, 3 top thick sticks, 4 adjusting screw(rod)s, 5,17 articulated joints, 6 tong arms, 7 intermediate connecting rods, 8 tracks, 9 power, the material that 10 coefficients of friction are bigger, 11,16 wedge blocks, 12,15 retracing springs, 13 screw rods, 14 frames, 18 holding screws, 19 locating pieces, 20 guide rods, 21 half hammers, 22 adjusting pads, 23 fasteners, 24 rollers, 25 retracing springs.
Below in conjunction with accompanying drawing, feature of the present invention is further described by embodiment.
Shown in Figure 2, a wedge block 11 is housed on every side tong arm 6, the slip plane of every pair of wedge block is similar to two planes that are parallel to each other, and promptly angle of wedge direction is opposite, is provided with the stop shoulder of projection on the cooresponding tong arm 6 of wedge block big end surface.Because be subjected to the constraint of stop shoulder, wedge block can only unidirectionally slide.Compression reseting spring 12 is set between wedge block and tong arm, and after the tong arm closure, wedge block contacts with track 8, promptly finishes initial clamping.And initial gripping power is not enough to grip track, have only when hoisting crane produces motion with respect to track, because the friction force between track and the wedge block is greater than the friction force between wedge block and the tong arm, to produce slide relative between wedge block and the tong arm, pressure between track and the jaw is increased, thereby gripping power is increased with external force, stop until motion.
Shown in Figure 3, on a tong arm, be provided with one group and stack the formula wedge block, realize bidirectional self-locking.The two-way wedge block of the formula that stacks is two wedge blocks 11 and 16 that the direction of slip that is assembled together is opposite.The wedge block 11 that contacts with track is contained on the wedge block 16, is provided with stop shoulder on wedge block 16, and stop shoulder is corresponding with the big end surface of wedge block 11, and wedge block 11 can only unidirectionally be slided; Wedge block 16 is contained on the tong arm 6, is provided with stop shoulder on tong arm, and stop shoulder is corresponding with the big end surface of wedge block 16, makes the wedge block 16 also can only unidirectional in the opposite direction slip.One group of compression reseting spring 12 and 15 respectively are set between wedge block 11 and wedge block 16, wedge block 16 and the tong arm 6.Identical with the principle of work of Fig. 2, after jaws close,, can both produce gripping power automatically no matter hoisting crane moves forwards or backwards.
Between wedge block 11,16 and the tong arm 6 or can adopt the assembling form of dovetail furrow commonly used or "T"-shaped groove to realize sliding block joint between wedge block 11 and the wedge block 16.Retracing spring 12,15 should adopt the compression spring, and can regulate the reset force of wedge block by the nut on the screw rod 13.
In order to guarantee that initial gripping power can act on the track 8 effectively, can on the friction face of wedge block 11 jaws, process groove or the bigger material 10(of friction coefficient such as asbestos brake band, rubber slipper etc. are set at the two ends of wedge block), in order to increase the friction force between wedge block and the track, in order to reduce the friction of wedge block sliding surface, necessary lubricant method should be set on sliding surface.
Fig. 1 utilizes the connecting rod switching mechanism to realize a kind of integral structure of the present invention.For the connecting rod switching mechanism, because the Clamping force of common rail clamping device is to produce by acting on the gravity (or elastic force of spring) that opens and closes the pouring weight 2 on the push rod 3, simultaneously because the distortion of structure behind the load, the influence of factor such as jaw wearing and tearing in manufacturing errors and the use, the β angle (see shown in Figure 1) of connecting rod after rail clamping device clamps generally remains on 10 °～15 °, and what have reaches about 20 °, and should not work near the dead point, so its structure is all bigger with the power that needs.The present invention has then overcome this defective, the main effect of switching mechanism is to finish two processes of open and close and apply less initial gripping power to tong arm, the gripping power of work-hours mainly is to be produced by the wedge block self of jaw, thereby makes linkage can work near dead point and dead point fully.This rail clamping device is when clamping work, and gripping power is delivered on the linkage along wedge block device 16, tong arm 6, and the power that affacts on the push rod 3 is very little, so that switching mechanism and required power thereof reduce greatly.
Fig. 4 implements a kind of adjustable linkage of the present invention.In order to prevent to use after a period of time the jaw wearing and tearing or, linkage to be made adjustable because manufacturing errors makes initial gripping power too small.Add the two-thread screw that can twist 4 between two articulated joints 5,17, the length of regulating linkage is adjusted initial gripping power and is made linkage in the purpose that is near position dead point or the dead point after the caliper closure to reach.For preventing that linkage from surmounting the dead point when the closure, some safety methods are taked in the hinged place in the middle of linkage, as Fig. 4.After linkage arrived the dead point, the locating piece 19 on two linkages withstood mutually, stoped push rod 3 to continue to move downward.
Fig. 5 utilizes the weight hammer type switching mechanism to implement another kind of integral structure of the present invention.For the weight hammer type switching mechanism, because the gripping power of common rail clamping device is to be produced by the gravity that acts on weight on the tong arm fully, so the weight of weight and required lifting power thereof are all very big, and the entire mechanism more complicated, are difficult for adjusting maintenance.Though the present invention has also utilized the switching principle of common weight hammer type switching mechanism and the self-lock mechanism of weight, because required initial gripping power is very little, the quality of weight and scantling of structure are also all less, so the stroke of roller 24 on weight is also shorter accordingly.For preventing that roller 24 is crossed self-locking stroke district, weight can be made structure as shown in Figure 5 owing to behind manufacturing errors and the abrasion deformation.Connect two and half hammers 21 on guide rod 20 bilateral symmetry ground, between half hammer and guide rod, one group of adjusting pad 22 is set respectively.By changing the thickness of adjusting pad, the just stroke of scalable roller or the self-locking angle of regulating weight.
For other switching mechanisms commonly used, as the cam switching mechanism, screw mandrel switching mechanism etc. are equally applicable to the present invention.
For unclamping power, the same with rail clamping device commonly used, can utilize fluid power oil cylinder, electro hydraulicthruster, electronic cylinder, electricwinch, electric power rack drives and M/C or the like.
For the mounting means of rail clamping device in frame, can intermediate connecting rod 7 be hinged on the frame by hinge, also available relocatable form is suspended in and waits method commonly used in the frame.
On automatic on/off mechanism, also have simultaneously than the manually operated advantage of the easier realization of existing rail clamping device, as: for steel rope elevator switching mechanism, can on drive motor or reductor, set up a cover and drive handwheel; For electronic fluid power switching mechanism, can in mechanism, set up one and manually operate leading screw or the like.
Working process of the present invention following (seeing figures.1.and.2):
1. open the closure state that is illustrated as rail clamping device, the driver train energising, fluid power oil cylinder 9 pistons rise, pouring weight 2, push rod 3, adjusting screw(rod) 4 are mentioned, and shrink on tong arm 6 tops, and clamp is opened, wedge block 11 is return under retracing spring 12 effects, and clamp de-orbits fully.
2. closed driver train outage, oil cylinder 9 pistons descend, and promote power and remove, and push rod 3, screw rod 4 are moved down, and the wedge block 11 on the jaw contacts with track, finishes initial clamping.
3. clamp when hoisting crane is mobile under external force, because wedge block 11 and interorbital friction force are greater than the friction force between wedge block 11 and the tong arm 6, wedge block 11 will produce slip on the tong arm wedge surface, thereby force the pressure between wedge block 11 and the track 8 to increase, stop until motion.
Claims (7)
1, a kind of crane on track self-locking rail clamping device, comprise the tong arm in a pair of suspension mainframe, two tong arms are hinged near jaw, the other end of two tong arm jaws is equipped with tong arm is opened or closed linkage or weight-driven, the power part and the electric controling part that can make the switching mechanism motion are housed on the frame, it is characterized in that, the jaw place direction along ng a path of a pair of tong arm (6) is equipped with the opposite wedge block of angle of wedge direction (11) respectively, retracing spring (12) is housed on the wedge block, the stop shoulder of a projection is arranged on the cooresponding tong arm of wedge block big end surface.
2, according to the described self-locking rail clamping device of claim 1, it is characterized in that, wedge block is one group and stacks the formula wedge block, wedge block (11) is contained on the wedge block (16), wedge block (16) is contained on the tong arm (6), the angle of wedge direction of the sliding surface of wedge block (11) on wedge block (16) is opposite with the angle of wedge direction of the sliding surface of wedge block (16) on tong arm, the stop shoulder that a projection is arranged on the cooresponding wedge block of big end surface (16) of wedge block (11) has the stop shoulder of a projection on the cooresponding tong arm of big end surface (6) of wedge block (16).
3, according to claim 1 or 2 described self-locking rail clamping devices, the linkage that it is characterized in that the tong arm switching mechanism is the two-thread screw (4) that is screwed into adjustable distance between two articulated joints (5), (17).
4, according to claim 1 or 2 described self-locking rail clamping devices, it is characterized in that, described closed power part is two symmetries, half hammer (21) that inserts the tong arm upper end, symmetry half hammer is fastened on the guide rod (20), between guide rod and half hammer adjusting pad (22) is set, weight is gone up motion together with guide rod at roller (24).
According to the described self-locking rail clamping device of claim 3, it is characterized in that 5, described rod hinge connection head (5) is gone up installing locating piece (19).
According to claim 1 or 2 described self-locking rail clamping devices, it is characterized in that 6, between wedge block (11) (16) and the tong arm (6), the assembling of available dovetail furrow or "T"-shaped groove is connected between wedge block (11) and the wedge block (16).
7, according to claim 1 or 2 described self-locking rail clamping devices, it is characterized in that, the compression spring of the retracing spring on the wedge block, and screw rod and the nut of regulating reset force arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114920 CN1030184C (en) | 1992-12-19 | 1992-12-19 | Self-locking rail clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114920 CN1030184C (en) | 1992-12-19 | 1992-12-19 | Self-locking rail clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1088542A CN1088542A (en) | 1994-06-29 |
| CN1030184C true CN1030184C (en) | 1995-11-01 |
Family
ID=4947169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114920 Expired - Fee Related CN1030184C (en) | 1992-12-19 | 1992-12-19 | Self-locking rail clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1030184C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730021A (en) * | 2011-04-08 | 2012-10-17 | 上海耐斯特液压设备有限公司 | Rail clamping device |
| CN102825562A (en) * | 2011-06-13 | 2012-12-19 | 江南大学 | High-strength self-locking telescopic hydraulic clamping device |
| CN103552915B (en) * | 2013-11-12 | 2015-08-05 | 湖州洋西起重设备有限公司 | A kind of self-locking device for rail clamping device |
| CN105171462A (en) * | 2015-08-21 | 2015-12-23 | 江南大学 | Hydraulic clamping device with powerful self-locking function |
| CN109624998B (en) * | 2018-12-14 | 2020-08-25 | 南京溧水高新创业投资管理有限公司 | Bearing tower of garbage remote transmission system |
| CN110440971B (en) * | 2019-09-10 | 2024-05-03 | 广东省特种设备检测研究院湛江检测院 | Port rail-mounted mechanical anti-skid force rapid detection device |
-
1992
- 1992-12-19 CN CN 92114920 patent/CN1030184C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088542A (en) | 1994-06-29 |
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| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |