Maintenance frame for bridge crane

Abstract

The utility model discloses a bridge crane maintenance frame which comprises a base, a lead screw motor is fixedly mounted on the left side of the top of the base, a screw is fixedly mounted at the top end of a rotating shaft of the lead screw motor, a threaded seat is in threaded connection with the side wall of the screw, a standing plate is fixedly mounted at the right end of the threaded seat, and a stand column is fixedly mounted at the right end of the top of the base. A stand column is installed on the top of the base, a rectangular hole is formed in the side wall of the stand column, a sliding ring is installed on the side wall of the stand column in a sliding mode, and the left end of the outer side wall of the sliding ring is fixedly connected with the right end of the standing plate. The inserting teeth in the stand columns can be inserted into the tooth grooves in the side walls of the stand columns and pressed on the stand columns through the nuts, the inserting teeth are inserted into the tooth grooves and used for being matched with the threaded bases to jointly bear the standing plates, the thread stress strength between the threaded bases and the screws is reduced, the service life is prolonged, and potential safety hazards are avoided.

Description

Technical Field

[0001] This patent relates to the technical field of maintenance racks, specifically a bridge crane maintenance rack. Background Art

[0002] A bridge crane is a lifting equipment that is horizontally mounted above a workshop, warehouse, or material yard to lift materials. When an operational failure occurs, a maintenance frame is needed to allow workers to walk on the crane's track to provide maintenance functions. It usually operates at a height of about 5 meters. Most of the existing maintenance frames are composed of a base, a screw motor, and other structures. The threaded seat controlled by the screw motor is connected to a stand plate. The screw motor is used to control the threaded seat and the stand plate to move to a certain height. Then, the weight of the stand plate and the maintenance personnel needs to be borne by the threads on the threaded seat and the screw. When the threads are severely damaged, they are easily damaged, causing the stand plate to fall and cause danger. There is also a limit slider that locks the threaded seat with a nut to position it, but the locking effect of the limit slider is small only by positioning it with a nut, and there is still a risk of falling. For this reason, we propose a bridge crane maintenance frame.

[0003] Patent content

[0004] The purpose of this patent is to provide a bridge crane maintenance frame to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, this patent provides the following technical solutions: a bridge crane maintenance frame, including a base, a lead screw motor is fixedly installed on the left side of the top of the base, a screw is fixedly installed on the top of the rotating shaft of the lead screw motor, a threaded seat is screwed on the side wall of the screw, a standing plate is fixedly installed on the right end of the threaded seat, a column is fixedly installed on the right end of the top of the base, a rectangular hole is provided on the side wall of the column, a slip ring is slidably installed on the side wall of the column, and the left end of the outer wall of the slip ring is fixedly connected to the right end of the standing plate;

[0006] A vertical plate is integrally formed on the right side of the top of the slip ring, and the vertical plate does not contact the side wall of the column. A stud is integrally formed on the left side of the vertical plate. A nut is screwed through the left end of the stud through the rectangular hole. The right side of the nut is tightly fitted on the left side of the side wall of the column, and the side wall of the stud does not contact the inner wall of the rectangular hole.

[0007] The nut includes an internal thread ring and a pressure ring. The internal thread ring is threaded on the stud. The right side of the internal thread ring is tightly fitted on the left side of the pressure ring. The right side of the pressure ring is tightly fitted on the left side of the side wall of the column. The right side of the pressure ring is integrally formed with insert teeth at both front and rear ends. The left side of the side wall of the column is provided with tooth grooves continuously distributed up and down at both front and rear ends. The insert teeth are inserted into the tooth grooves.

[0008] Preferably, the inner wall of the pressure ring is provided with a limit piece, and the limit piece includes a slider, the top of the slider is integrally formed on the top of the inner wall of the pressure ring, the top of the side wall of the stud is provided with a slide groove, the shape of the slider matches the internal shape of the slide groove, and the slider is slidably installed in the slide groove.

[0009] Preferably, the left end of the slide slot is in an open state.

[0010] Preferably, grip rods are integrally formed at both upper and lower ends of the outer side wall of the internal threaded ring.

[0011] Preferably, rollers are installed at the four corners of the bottom of the base.

[0012] Preferably, a push rack is fixedly mounted on the left side of the top of the base.

[0013] Preferably, the outer wall of the pressure ring is provided with an annular groove, a ring is rotatably installed in the annular groove, a connecting ring is fixedly installed on the outer wall of the ring, and the left side of the inner wall of the connecting ring is fixedly installed on the outer wall of the internal threaded ring.

[0014] Compared with the prior art, the beneficial effects of this patent are as follows: this patent installs a column on the top of the base, the column is provided with a rectangular hole, a slip ring is slidably installed on the side wall of the column, the slip ring is provided with a stud, the stud can pass through the rectangular hole and be screwed with a nut, the nut is pressed on the column, the spline in the column can be inserted into the tooth groove on the side wall of the column, the nut is pressed on the column and the spline is inserted into the tooth groove, which is used to cooperate with the threaded seat to bear the weight of the station plate, reduce the force strength of the thread between the threaded seat and the screw, improve the service life, and avoid safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall three-dimensional diagram of this patent.

[0016] Figure 2 This is the overall plan view of this patent.

[0017] Figure 3 This is a schematic diagram of the partial structure of this patent.

[0018] Figure 4 This is a schematic diagram of the nut of this patent.

[0019] In the figure: 1, base, 2, screw motor, 3, screw, 4, threaded seat, 5, stand plate, 6, column, 7, rectangular hole, 8, slip ring, 9, stand plate, 10, stud, 11, nut, 12, internal thread ring, 13, pressure ring, 14, gearing, 15, slider, 16, slide groove, 17, grip rod, 18, roller, 19, push frame, 20, circular ring groove, 21, circular ring, 22, connecting ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 This patent provides a technical solution: a bridge crane maintenance frame, including a base 1, a screw motor 2 is fixedly installed on the left side of the top of the base 1, a screw 3 is fixedly installed on the top of the rotating shaft of the screw motor 2, a threaded seat 4 is screwed on the side wall of the screw 3, a standing plate 5 is fixedly installed on the right end of the threaded seat 4, a column 6 is fixedly installed on the right end of the top of the base 1, a rectangular hole 7 is provided on the side wall of the column 6, a slip ring 8 is slidably installed on the side wall of the column 6, and the left end of the outer wall of the slip ring 8 is fixedly connected to the right end of the standing plate 5;

[0022] The inner wall of the slip ring 8 is slidably mounted on the side wall of the column 6, which is equivalent to the limiting mechanism of the screw mechanism, and is used to make the threaded seat 4 and the station plate 5 only move up and down.

[0023] A vertical plate 9 is integrally formed on the right side of the top of the slip ring 8, and the vertical plate 9 does not contact the side wall of the column 6. A stud 10 is integrally formed on the left side of the vertical plate 9. The left end of the stud 10 passes through the rectangular hole 7 and is screwed with a nut 11. The right side of the nut 11 is tightly fitted on the left side of the side wall of the column 6, and the side wall of the stud 10 does not contact the inner wall of the rectangular hole 7.

[0024] The nut 11 includes an internal thread ring 12 and a pressure ring 13. The internal thread ring 12 is screwed onto the stud 10. The right side of the internal thread ring 12 fits tightly against the left side of the pressure ring 13. The right side of the pressure ring 13 fits tightly against the left side of the side wall of the column 6. The right side of the pressure ring 13 is integrally formed with a spline 14 at both front and rear ends. The left side of the side wall of the column 6 is provided with tooth grooves continuously distributed up and down at both front and rear ends. The spline 14 is inserted into the tooth groove.

[0025] The two rows of tooth grooves are respectively distributed on the front and rear sides of the rectangular hole 7 .

[0026] Specifically, a limit piece is provided on the inner wall of the pressure ring 13, and the limit piece includes a slider 15. The top of the slider 15 is integrally formed on the top of the inner wall of the pressure ring 13. A slide groove 16 is provided on the top of the side wall of the stud 10. The shape of the slider 15 matches the internal shape of the slide groove 16, and the slider 15 is slidably installed in the slide groove 16.

[0027] The slider 15 is slidably installed in the slide groove 16 to limit the movement trajectory of the pressure ring 13 so that the pressure ring 13 can only move left and right relative to the stud 10. No matter how the pressure ring 13 moves up and down, the two insert teeth 14 always correspond to the left sides of the tooth grooves on both sides.

[0028] Specifically, the left end of the slide slot 16 is in an open state.

[0029] The left end of the slide slot 16 is in an open state, so that the pressing ring 13 can be easily installed on the stud 10 from the left end of the stud 10 .

[0030] Specifically, grip rods 17 are integrally formed at both upper and lower ends of the outer side wall of the internal threaded ring 12 .

[0031] The provision of the gripping rod 17 facilitates the rotation of the internal threaded ring 12 by the staff.

[0032] Specifically, rollers 18 are installed at the four corners of the bottom of the base 1 .

[0033] A transverse plate can be installed on the ground below the portal frame of the bridge crane, and two rows of wheel grooves corresponding to the rollers 18 can be arranged on the transverse plate to facilitate the overall maintenance frame to move left and right below the portal frame.

[0034] The roller 18 is a fixed universal wheel, which is convenient for the staff below to lock the roller 18.

[0035] Specifically, a push frame 19 is fixedly installed on the top left side of the base 1 .

[0036] The arrangement of the push frame 19 facilitates the staff below to move the position of the base 1 .

[0037] Specifically, the outer wall of the pressure ring 13 is provided with an annular groove 20 , in which a ring 21 is rotatably installed, and a connecting ring 22 is fixedly installed on the outer wall of the ring 21 , and the left side of the inner wall of the connecting ring 22 is fixedly installed on the outer wall of the internal threaded ring 12 .

[0038] The shape and size of the circular ring 21 match the internal shape and size of the circular ring groove 20. The circular ring 21 can only rotate in the circular ring groove 20 and cannot move in other directions in the circular ring groove 20. It is used to make the internal thread ring 12 and the pressure ring 13 move relative to each other. When the internal thread ring 12 moves left and right, the pressure ring 13 can be driven to move left and right by the circular ring 21 at the same time, thereby increasing the integrated effect. For example, when the internal thread ring 12 moves to the left, the pressure ring 13 can be driven to the left at the same time, and the tooth 14 disengages from the tooth groove without manual movement of the pressure ring 13.

[0039] Working principle: The maintenance personnel can stand on the stand 5 (a fence or safety rope can be set on the stand 5), and control the screw 3 to rotate through the screw motor 2 (before this action Figure 3The middle pressure ring 13 does not contact the column 6), the screw 3 drives the threaded seat 4 and the station plate 5 to move upward until the station plate 5 is moved to the maintenance height. The staff on the station plate 5 can rotate the internal threaded ring 12 to drive the pressure ring 13 to move to the right until the pressure ring 13 is pressed tightly on the left side of the side wall of the column 6, and the tooth 14 is inserted into the tooth groove on the column 6. The nut 11 is pressed on the column 6 and the tooth 14 is inserted into the tooth groove, which is used to cooperate with the threaded seat 4 to bear the weight of the station plate 5, reduce the force strength of the thread between the threaded seat 4 and the screw 3, improve the service life, and avoid safety hazards.

[0040] It should be noted that the equipment structure and drawings of this patent mainly describe the principles of this patent. In terms of the technology of this design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. However, on the premise that technical personnel in this field understand the principles of the above patent, they can clearly know the details of its power mechanism, power supply system and control system.

[0041] In the description of this patent, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection", "fixed installation" 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 directly connected or indirectly connected 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 this patent can be understood according to the specific circumstances.

[0042] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. A bridge crane maintenance frame, characterized in that: The invention comprises a base (1), a lead screw motor (2) is fixedly mounted on the left side of the top of the base (1), a screw rod (3) is fixedly mounted on the top of the rotating shaft of the lead screw motor (2), a threaded seat (4) is screwed on the side wall of the screw rod (3), a standing plate (5) is fixedly mounted on the right end of the threaded seat (4), a column (6) is fixedly mounted on the right end of the top of the base (1), a rectangular hole (7) is provided on the side wall of the column (6), a slip ring (8) is slidably mounted on the side wall of the column (6), and the left end of the outer wall of the slip ring (8) is fixedly connected to the right end of the standing plate (5); A vertical plate (9) is integrally formed on the right side of the top of the slip ring (8), and the vertical plate (9) does not contact the side wall of the column (6). A stud (10) is integrally formed on the left side of the vertical plate (9), and the left end of the stud (10) passes through the rectangular hole (7) and is screwed with a nut (11), and the right side of the nut (11) is tightly fitted on the left side of the side wall of the column (6), and the side wall of the stud (10) does not contact the inner wall of the rectangular hole (7); The nut (11) comprises an internal thread ring (12) and a pressure ring (13); the internal thread ring (12) is threaded onto the stud (10); the right side surface of the internal thread ring (12) is tightly fitted onto the left side surface of the pressure ring (13); the right side surface of the pressure ring (13) is tightly fitted onto the left side of the side wall of the column (6); the right side surface of the pressure ring (13) is integrally formed with a spline (14) at both the front and rear ends; the left side wall of the column (6) is provided with tooth grooves continuously distributed up and down at both the front and rear ends; the spline (14) is inserted into the tooth grooves.

2. The bridge crane maintenance frame according to claim 1, characterized in that: The inner side wall of the pressure ring (13) is provided with a limiting member, and the limiting member includes a slider (15). The top end of the slider (15) is integrally formed on the top end of the inner side wall of the pressure ring (13). The top end of the side wall of the stud (10) is provided with a slide groove (16). The shape of the slider (15) matches the internal shape of the slide groove (16), and the slider (15) is slidably installed in the slide groove (16).

3. The bridge crane maintenance frame according to claim 2, characterized in that: The left end of the slide groove (16) is in an open state.

4. The bridge crane maintenance frame according to claim 1, characterized in that: Grip rods (17) are integrally formed at both upper and lower ends of the outer side wall of the internal thread ring (12).

5. The bridge crane maintenance frame according to claim 1, characterized in that: Rollers (18) are installed at the four corners of the bottom of the base (1).

6. The bridge crane maintenance frame according to claim 1, characterized in that: A push frame (19) is fixedly mounted on the left side of the top of the base (1).

7. The bridge crane maintenance frame according to claim 1, characterized in that: The outer wall of the pressure ring (13) is provided with an annular groove (20), a circular ring (21) is rotatably mounted in the annular groove (20), a connecting ring (22) is fixedly mounted on the outer wall of the circular ring (21), and the left side of the inner wall of the connecting ring (22) is fixedly mounted on the outer wall of the internal thread ring (12).

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