Locking rail clamping device

Abstract

The locking rail clamping device comprises sliding rails fixed to the two sides of an I-shaped rail and racks fixed to the two sides of the rail and parallel to the sliding rails and further comprises a box body, the box body is installed at the front end of a walking mechanism of a crane, an opening is formed in the bottom of the box body, sliding plates matched with the sliding rails are machined on the two sides of the opening, and the sliding plates are connected with the sliding rails. More than two guide rods are arranged in the box body and are positioned above the track in parallel, a sliding block which can be magnetically adsorbed is matched through the guide rods, an electromagnet is arranged on the inner wall of the box body, the electromagnet adsorbs the sliding block when being electrified, a spring is sleeved on the guide rod, and the spring is connected with the sliding block when being electrified. The spring acts between the sliding block and the box body, magnetism disappears after the electromagnet is powered off, and the sliding block is reset under the action of the spring; the device can be driven by inertia generated when the crane slides in a power-off mode, and the braking effect is improved.

Description

Technical Field

[0001] The invention relates to a locking rail clamp. Background Art

[0002] Traveling crane, also known as traveling crane, crane, gantry crane and overhead crane, are all general names for cranes. Traveling crane is basically the same as what we call gantry crane and bridge crane.

[0003] The traveling crane is composed of a traveling mechanism and a gantry, and lifting is performed through the gantry and steel cables.

[0004] The crane itself has a braking system, but the braking system requires manual control and is electrically conductive. When the crane loses power, the braking system cannot operate. During the lifting process, due to the large mass of the heavy object, the inertia of the crane when the power is cut off is also large. If the crane cannot be stopped in time, it will cause the crane to hit the limit device and even cause the crane to collapse.

[0005] Therefore, it is necessary to install track clamps at both ends of the traveling mechanism of the crane. The function of the track clamp is to clamp the track after the power of the crane is cut off, thereby achieving the technical effect of auxiliary braking.

[0006] The track clamp in the prior art mainly utilizes the technical means of electromagnet attraction. After the electromagnet is powered off, the brake block rebounds and acts on the track to form a braking force.

[0007] However, we found in actual use that the braking force generated by this structure is very limited. The braking force generated depends on the rebound force provided by the spring, and the rebound force of the spring is limited. If the rebound force is too large, the magnetism of the electromagnet cannot capture the brake block, and if the rebound force is too small, the braking force generated after the brake block contacts the track is insufficient. Therefore, there are certain technical defects.

[0008] To this end, we designed a locking rail clamp that can use the inertia of the crane when it is powered off to drive and improve the braking effect. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a locking rail clamp which can utilize the inertia of a traveling crane when it is powered off and sliding to improve the braking effect.

[0010] To solve the above problems, the present invention adopts the following technical solutions:

[0011] A locking rail clamp comprises slide rails fixed to both sides of an I-shaped track, and racks fixed to both sides of the track and parallel to the slide rails, and also comprises a box body, the box body is installed at the front end of the traveling mechanism of the overhead crane, the bottom of the box body is provided with an opening, and slide plates matching the slide rails are processed on both sides of the opening, and more than two guide rods are arranged in parallel above the track inside the box body, and a slider that can be magnetically adsorbed is matched through the guide rods, and an electromagnet is installed on the inner wall of the box body, and the electromagnet adsorbs the slider when energized, and a spring is sleeved on the guide rod, and the spring acts on the Between the slider and the box body, the magnetism disappears after the electromagnet is powered off, and the slider resets under the action of the spring. Inside the box body, a brake plate is arranged below the slider, and a rotating shaft is engaged through the rotation of the slider. A gear is fixedly installed on the lower end of the rotating shaft. A threaded part is processed on the rotating shaft, and the threaded part cooperates with the brake plate. After the electromagnet is powered off, the slider rebounds under the action of the spring, and the gear is meshed with the rack after rebounding. Under the inertia force of the vehicle movement, the gear is passively rotated, and the brake plate is driven to slide down through the threaded cooperation and then acts on the top of the track.

[0012] Preferably, a connecting plate for cooperating with the traveling mechanism of the traveling crane is provided at the rear end of the box body, and a rib plate is provided between the connecting plate and the box body.

[0013] Preferably, a front cover plate is provided at the front end of the box body, the front cover plate has a slot for passing the track, and an energy absorbing column is provided at the front end surface of the front cover plate.

[0014] Preferably, the brake plate includes a plate body having a threaded hole matching the threaded portion, a right-angle groove is processed at the bottom of the plate body, a base plate is fixedly installed in the right-angle groove, a brake pad is installed at the bottom of the base plate, and the track is contacted through the brake pad.

[0015] Preferably, the top of the rail is processed with anti-skid textures, and the brake pad contacts the textures.

[0016] Preferably, the upper and lower ends of the slider are both provided with concave holes, and a through hole is processed between the concave holes at the upper and lower ends, the aperture of the through hole is smaller than the aperture of the concave hole, the rotating shaft passes through the through hole, a bearing is matched between the concave hole at the bottom and the rotating shaft, a damping ring is embedded in the concave hole at the top, a rigid pressure ring is arranged above the damping ring, a thread is processed at the orifice position of the concave hole at the top, and a pressing sleeve is matched through the thread, the pressing sleeve is screwed down and acts on the rigid pressure ring, and the rigid pressure ring squeezes the damping ring, so that the damping ring is deformed and clamps the rotating shaft, and when the gear is meshed with the rack, the rotation of the rotating shaft increases after passing through the damping ring.

[0017] Preferably, the slide rail has a T-shaped slide rail groove, and the slide plate fits into the slide rail groove.

[0018] Preferably, a first guide rod is arranged on the top of the brake plate, and the first guide rod passes through the slider and slides along the slider.

[0019] Preferably, a safety pin is provided between the gear and the rotating shaft.

[0020] The beneficial effects of the present invention are:

[0021] Advantage 1: After the crane is powered off, this device uses the crane's moving inertia to make the gear and rack contact, and uses the rotation of the shaft to drive the brake plate downward, so that a braking force is generated between the brake plate and the track to brake the crane. The braking force is greater and the braking effect is better.

[0022] Advantage 2: The rotational resistance of the gear can be increased by setting the damping ring, so that the brake plate can have a braking effect through the damping ring and the gear before it contacts the track.

[0023] Advantage three: This device can be installed on the traveling mechanism of a traveling crane, and the installation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 is a stereogram of the track;

[0027] Figure 3 for Figure 2 A magnified view at point A;

[0028] Figure 4 This is the internal schematic diagram of the rail clamp;

[0029] Figure 5 It is a half-section view of the rail clamp;

[0030] Figure 6 A cross-sectional view of the slider. DETAILED DESCRIPTION

[0031] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0032] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0033] In the description of the present invention, it is necessary to understand that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In addition, in the description of the present invention, “plurality” means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "disposed", "socketed", "connected", "through", "plugged" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See also Figures 1 to 6The locking rail clamp shown in the figure includes slide rails 2 fixed on both sides of an "I"-shaped track 1, and racks 3 fixed on both sides of the track 1 and parallel to the slide rails 2, and also includes a box body 4, the box body 4 is installed at the front end of the traveling mechanism of the overhead crane, the bottom of the box body 4 is provided with an opening, and slide plates 41 matching the slide rails 2 are processed on both sides of the opening, and more than two guide rods 42 are arranged in parallel above the track 1 inside the box body 4, and a slider 43 that can be magnetically adsorbed is matched through the guide rods 42, and an electromagnet 44 is installed on the inner wall of the box body 4, and the electromagnet 44 adsorbs the slider 43 when energized, and a spring 45 is sleeved on the guide rod 42, and the spring 45 acts on the slider 43 and the box body 4, the magnetism disappears after the electromagnet 44 is powered off, and the slider 43 is reset under the action of the spring 45. Inside the box body 4, a brake plate 5 is arranged below the slider 43, and a rotating shaft 46 is rotated by the slider 43. A gear 47 is fixedly installed on the lower end of the rotating shaft 46. A threaded portion 48 is processed on the rotating shaft 46, and the threaded portion 48 cooperates with the brake plate 5. After the electromagnet 44 is powered off, the slider 43 rebounds under the action of the spring 45. After the rebound, the gear 47 is meshed with the rack 3. Under the inertia force of the vehicle moving, the gear 3 is passively rotated, and the brake plate 5 is driven to slide down through the threaded cooperation and then acts on the top of the track 1.

[0037] This device is used in pairs, that is, the track clamps need to be installed at both ends of each traveling mechanism of the crane to ensure that no matter the crane moves forward or reverse, there is a track clamp that can contact the track and lock after power failure.

[0038] In the above technical solution, when the traveling crane loses power and cannot stop in time, the track clamp loses power, causing the electromagnet to lose its magnetism after power is cut off. At this time, the slider rebounds under the action of the spring, causing the gear to mesh with the rack. The inertia after the traveling crane is powered off causes the gear to rotate, and the rotation of the gear drives the threaded part. Under the driving action of the threaded part, the brake plate moves downward and acts on the top of the track to generate braking force.

[0039] See also Figure 1 As shown, a connecting plate 441 for cooperating with the traveling mechanism of the traveling crane is provided at the rear end of the box body 4, and a rib plate 442 is provided between the connecting plate 441 and the box body 4.

[0040] The above technical solution is to facilitate docking with the traveling mechanism of the overhead crane.

[0041] See also Figure 1 As shown, a front cover plate 443 is provided at the front end of the box body 4. The front cover plate 443 has a slot 444 for passing through the track 1. An energy absorbing column 445 is provided at the front end surface of the front cover plate 443.

[0042] In normal use of the overhead crane, it is necessary to set a limiting structure at both ends of the track, and elastic energy absorption and limiting are performed by the energy absorption column 445 hitting the limiting structure.

[0043] See also Figure 3 and Figure 5 As shown, the brake plate 5 includes a plate body 51, and the plate body 51 has a threaded hole 52 that matches the threaded portion 48. The bottom of the plate body 51 is processed with a right-angle groove, and a base plate 53 is fixedly installed in the right-angle groove. A brake pad 54 is installed at the bottom of the base plate 53, and the brake pad 54 contacts the track 1.

[0044] A replaceable brake pad 54 is used, which can be replaced after being worn.

[0045] See also Figure 2 , Figure 3 and Figure 5 As shown, the top of the rail 1 is processed with anti-skid patterns 11 , and the brake pad 54 contacts the patterns 11 .

[0046] The arrangement of the texture 11 can increase the friction force and improve the braking effect.

[0047] See also Figure 6 As shown, the upper and lower ends of the slider 43 are both provided with concave holes 441, and a through hole 442 is processed between the concave holes 441 at the upper and lower ends. The aperture of the through hole 442 is smaller than the aperture of the concave hole 441, and the rotating shaft 46 passes through the through hole 442. A bearing 443 is matched between the lower concave hole 441 and the rotating shaft 46, and a damping ring 444 is embedded in the upper concave hole 441. A rigid pressing ring 445 is arranged above the damping ring 444, and a thread is processed at the orifice position of the upper concave hole 441, and a pressing sleeve 446 is matched through the thread. The pressing sleeve 446 acts on the rigid pressing ring 445 after being screwed down, and the rigid pressing ring 445 squeezes the damping ring 444, so that the damping ring 444 clamps the rotating shaft 46 after deformation. When the gear 47 is engaged with the rack 3, the rotation of the rotating shaft 46 increases after passing through the damping ring 444.

[0048] In the above technical solution, the rotation damping of the rotating shaft 46 is increased through the extrusion deformation of the damping ring 444. After the crane is powered off, the gear meshes with the rack, the rotation resistance of the gear increases, and an auxiliary braking effect is achieved on the crane.

[0049] See also Figure 3 As shown, the slide rail 2 has a T-shaped slide rail groove 21 , and the slide plate 41 fits into the slide rail groove 21 .

[0050] When in use, grease needs to be added into the slide rail groove 21 to ensure that the friction resistance is reduced during the normal operation of the overhead crane.

[0051] See also Figure 5 and Figure 6 As shown, a first guide rod 501 is provided on the top of the brake plate 5 , and the first guide rod 501 passes through the slider 43 and slides along the slider 43 .

[0052] The first guide rod 501 is provided to play a guiding role, thereby increasing the stability of the brake plate 5 when it moves up and down.

[0053] See also Figure 5 As shown, a safety pin 499 is provided between the gear 47 and the rotating shaft 46 .

[0054] When the braking force generated by the contact between the brake plate 5 and the track 1 makes it impossible for the crane to stop in time, the continuous cooperation between the gear and the rack will cause the rotating shaft to twist and break, resulting in the failure of the braking force of the brake plate 5. Therefore, the above-mentioned safety pin 499 is used. When the brake plate 5 and the track 1 generate braking force and the crane cannot stop in time, the continued rotation of the gear causes the safety pin 499 to break. At this time, the gear can continue to rotate in cooperation with the rack, while the brake plate 5 remains in place and still maintains the braking force.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A locking rail clamp, Features: The invention comprises a slide rail (2) fixed on both sides of an I-shaped track (1), and a rack (3) fixed on both sides of the track (1) and parallel to the slide rail (2), and also comprises a box (4), the box (4) is installed at the front end of the walking mechanism of the traveling crane, the bottom of the box (4) is provided with an opening, and slide plates (41) matching the slide rail (2) are processed on both sides of the opening, and more than two guide rods (42) are arranged in parallel above the track (1) inside the box (4), and a slider (43) that can be magnetically attracted is matched through the guide rod (42), and an electromagnet (44) is installed on the inner wall of the box (4), and the electromagnet (44) attracts the slider (43) when energized, and a spring (45) is sleeved on the guide rod (42), and the spring (45) acts on the slider (43) and the box (4). The housing (4) is provided with a plurality of movable parts, wherein the movable parts (43) and the movable parts (44) are provided with a plurality of movable parts, wherein the movable parts (43) and the movable parts (45 ...

2. The locking rail clamp according to claim 1, Features: The rear end of the box body (4) is provided with a connecting plate (441) for cooperating with the traveling mechanism of the traveling crane, and a rib plate (442) is provided between the connecting plate (441) and the box body (4).

3. The locking rail clamp according to claim 2, Features: The front end of the box body (4) is provided with a front cover plate (443), the front cover plate (443) has a notch (444) for passing through the track (1), and an energy absorbing column (445) is provided at the front end surface of the front cover plate (443).

4. The locking rail clamp according to claim 1, Features: The brake plate (5) comprises a plate body (51), the plate body (51) having a threaded hole (52) matching the threaded portion (48), a right-angle groove processed at the bottom of the plate body (51), a base plate (53) fixedly installed in the right-angle groove, a brake pad (54) installed at the bottom of the base plate (53), and contacting the track (1) through the brake pad (54).

5. The locking rail clamp according to claim 4, Features: The top of the track (1) is processed with an anti-skid pattern (11), and the brake shoe (54) contacts the pattern (11).

6. The locking rail clamp according to claim 1, Features: The upper and lower ends of the slider (43) are both provided with concave holes (441), a through hole (442) is processed between the concave holes (441) at the upper and lower ends, the aperture of the through hole (442) is smaller than the aperture of the concave hole (441), the rotating shaft (46) passes through the through hole (442), a bearing (443) is matched between the concave hole (441) at the lower end and the rotating shaft (46), a damping ring (444) is embedded in the concave hole (441) at the upper end, and a damping ring (444) is provided above the damping ring (444). A rigid pressure ring (445) is provided, and a thread is processed at the opening position of the upper concave hole (441), and a pressure sleeve (446) is matched with the thread. The pressure sleeve (446) acts on the rigid pressure ring (445) after being screwed down, and the rigid pressure ring (445) squeezes the damping ring (444), so that the damping ring (444) clamps the rotating shaft (46) after being deformed. When the gear (47) is meshed with the rack (3), the rotation of the rotating shaft (46) increases the resistance after passing through the damping ring (444).

7. The locking rail clamp according to claim 1, Features: The slide rail (2) has a T-shaped slide rail groove (21), and the slide plate (41) fits into the slide rail groove (21).

8. The locking rail clamp according to claim 1, Features: A first guide rod (501) is arranged on the top of the brake plate (5), and the first guide rod (501) passes through the slider (43) and slides along the slider (43).

9. The locking rail clamp according to claim 1, Features: A safety pin (499) is provided between the gear (47) and the rotating shaft (46).

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