Lifting platform moving device of bridge deck crane

Abstract

The utility model discloses a lifting platform moving device of a bridge deck crane, which comprises an upper longitudinal beam assembly, the upper longitudinal beam assembly comprises a left longitudinal main beam and a right longitudinal main beam which extend front and back, and a plurality of transverse beams which extend left and right are fixed between the two longitudinal main beams; a longitudinal moving platform is placed on the top faces of the two longitudinal main beams, and a transverse moving platform is arranged on the top face of the longitudinal moving platform. The longitudinal moving platform can stably move back and forth, and an adjustable inner sleeve body is arranged between a first hinge shaft and a vertical stepped through hole of an end connecting part or a vertical stepped through hole of the end of a push rod of a transverse pushing oil cylinder, so that during operation, the first hinge shaft can be adjusted, and meanwhile, the vertical stepped through hole of the end connecting part or the end of the push rod of the transverse pushing oil cylinder can be adjusted. And friction or abrasion with the inner side wall of the corresponding vertical stepped through hole is avoided, clamping is avoided, and normal use is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoisting equipment technical field more specifically, and it is a kind of lifting platform moving device of bridge crane. BACKGROUND

[0002] In the prior art bridge crane, the front top surface of the upper longitudinal beam assembly is provided with a longitudinal moving platform and a pushing mechanism to push the longitudinal moving platform to move forward and backward. When moving, the longitudinal moving platform needs to move forward and backward along the longitudinal beam assembly. The prior art longitudinal moving platform is generally provided with two guide members fixed on the left side and the right side thereof. The two guide members are arranged on the left side and the right side of the longitudinal beam assembly to guide the movement. However, the friction between the guide member and the outer wall of the longitudinal beam is large, which will generate friction during movement, affect the surface quality, and even cause jamming problem.

[0003] Meanwhile, a transverse moving platform is arranged above the longitudinal moving platform. The transverse moving platform is provided with a guide cable frame, a cable storage disc and a tensioning jack. The steel wire rope of the tensioning jack extends vertically downward from the hollow through hole of the tensioning jack and is fixed to a lifting device.

[0004] A transverse pushing oil cylinder is further arranged above the longitudinal moving platform. The connecting part between the transverse pushing oil cylinder and the longitudinal moving platform and the transverse moving platform is connected by a hinge shaft. The hinge shaft is directly inserted into the through hole of the connecting seat of the transverse pushing oil cylinder or the vertical through hole at the end of the push rod. There is no other component between the hinge shaft and the connecting seat of the transverse pushing oil cylinder or the vertical through hole at the end of the push rod, so that the hinge shaft is easily rubbed against the inner side wall of the through hole of the connecting seat of the transverse pushing oil cylinder or the vertical through hole at the end of the push rod during operation, which causes abrasion and easily damages the hinge shaft, affecting normal use. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art and providing a lifting platform moving device of bridge crane, which ensures stable forward and backward movement of the longitudinal moving platform. The vertical stepped through hole of the first hinge shaft and the end connecting part or the vertical stepped through hole at the end of the push rod of the transverse pushing oil cylinder is provided with an adjustable inner sleeve, so that the first hinge shaft can be adjusted without being rubbed against the inner side wall of the corresponding vertical stepped through hole or being abraded during operation, which prevents jamming and ensures normal use.

[0006] The utility model solves the technical problem by the following scheme:

[0007] A lifting platform moving device of bridge crane, comprising an upper longitudinal beam assembly, the upper longitudinal beam assembly comprises two longitudinal main beams extending forward and backward left and right, and a plurality of transverse beams extending left and right are fixed between the two longitudinal main beams.

[0008] A longitudinal moving platform is arranged on the top surface of the two longitudinal main beams, and a transverse moving platform is arranged on the top surface of the longitudinal moving platform.

[0009] The top surface of the rear part of the transverse beam of the upper longitudinal beam assembly is fixed with a connecting seat, and a longitudinal pushing oil cylinder is movably connected to the connecting seat through a hinge shaft.

[0010] The bottom surface of the left part and the right part of the longitudinal moving platform is fixed with two side guide strips on the front part and the rear part.

[0011] The side guide strips are made of angle steel, and the opposite wall surfaces of the two side guide strips are fixed with self-lubricating wear-resistant plates.

[0012] The bottom surface of the left part and the right part of the longitudinal moving platform is fixed with two side guide strips on the front part and the rear part.

[0013] The rear end of the upper connecting beam is movably connected to the top surface of the left and right extending connecting beams at the rear part of the longitudinal moving platform through a hinge shaft.

[0014] The side wall of the front part of the upper connecting beam is fixed with two first connecting plates corresponding to the upper and lower parts, and the left part or the right part of the connecting beam of the front part of the longitudinal moving platform is fixed with a horizontal pushing oil cylinder seat corresponding to the first connecting plate.

[0015] The middle part of the end connecting part and the middle part of the end of the pushing rod of the horizontal pushing oil cylinder are both formed with a vertical stepped through hole, the inner diameter of the upper part is smaller than that of the lower part, the connecting sleeve is clamped in the lower part of the vertical stepped through hole, the outer side wall of the connecting sleeve is pressed against the inner side wall of the corresponding lower part, the top surface of the connecting sleeve is pressed against the top surface of the lower part, the inner side wall of the connecting sleeve is spherical, the inner sleeve body is inserted into the connecting sleeve, the outer side wall of the inner sleeve body is spherical and tightly contacts with the inner side wall of the connecting sleeve, the middle part of the first hinge shaft is located in the middle vertical through hole of the corresponding inner sleeve body, and the middle outer side wall of the first hinge shaft is pressed against the inner side wall of the middle vertical through hole of the corresponding inner sleeve body.

[0016] The prominent effect of the utility model is:

[0017] Compared with the prior art, it adopts multiple side guide strips to realize the front and rear guidance movement of the longitudinal moving platform, the self-lubricating wear-resistant plate on the inner side can reduce wear and ensure stable front and rear movement, and an adjustable inner sleeve body is arranged between the vertical stepped through hole of the first hinged shaft and the vertical stepped through hole of the end of the push rod of the horizontal pushing oil cylinder, so that the first hinged shaft can be adjusted without friction or wear with the inner side wall of the corresponding vertical stepped through hole, and is not clamped, ensuring normal use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a partial structure schematic view of the utility model;

[0019] Figure 2 is a partial sectional view of the utility model;

[0020] Figure 3 is Figure 2 a partial enlarged view of another part of

[0021] Figure 4 is Figure 2 a partial enlarged view of another part of

[0022] Figure 5 is Figure 2 a partial enlarged view of another part of DETAILED DESCRIPTION

[0023] Embodiment, see as Figures 1 to 5 shown, a lifting platform moving device of a bridge deck crane, including upper longitudinal beam assembly 10, the upper longitudinal beam assembly 10 includes two left and right front and rear extending longitudinal main beams 11, multiple left and right extending transverse beams 12 are fixed between two longitudinal main beams 11, and the two ends of the transverse beam 12 are fixedly connected with the connecting portion welded or bolted on the inner side wall of the two longitudinal main beams 11;

[0024] Two longitudinal main beams 11 are placed on the top surface of the longitudinal moving platform 20, and the top surface of the longitudinal moving platform 20 is provided with a transverse moving platform 30, the transverse moving platform 30 includes a front and rear extending upper connecting beam 31, two left and right extending guide cable frames 1 are fixed on the top surface of the rear part of the upper connecting beam 31, and a storage cable tray 2 is installed on the two guide cable frames 1; the front top surface of the upper connecting beam 31 is fixed with a tension jack 3.

[0025] The top surface of the rear part of the upper longitudinal beam assembly 10 is fixed with a connecting seat 13, and the longitudinal pushing oil cylinder 14 is movably connected with the connecting seat 13 through a hinged shaft, and the end of the push rod of the longitudinal pushing oil cylinder 14 is movably connected with the two connecting plates of the rear end of the longitudinal moving platform 20 through a hinged shaft;

[0026] The front and rear parts of the left and right parts of the bottom surface of the longitudinal moving platform 20 are fixed with two left and right close and corresponding side guide strips 21, the top of the longitudinal main beam 11 is between the four side guide strips 21 of the corresponding front and rear parts, specifically, the side guide strip 21 is made of angle steel, the opposite wall surface of the left and right corresponding two side guide strips 21 is fixed with a self-lubricating wear-resistant plate 22, the inner side wall of the self-lubricating wear-resistant plate 22 is close to the side wall of the corresponding longitudinal main beam 11. The self-lubricating wear-resistant plate 22 reduces the friction when the longitudinal moving platform 20 moves forward and backward along the two longitudinal main beams 11, and improves the stability and smoothness of the movement.

[0027] Further, the bottom surface of the left and right parts of the longitudinal moving platform 20 is fixed with a front and rear extending polytetrafluoroethylene plate 4, the bottom surface of the polytetrafluoroethylene plate 4 is in contact with the top surface of the corresponding longitudinal main beam 11, the top surface of the longitudinal main beam 11 is fixed with a front and rear extending guide plate 111, the upper part of the guide plate 111 is inserted into the front and rear extending guide groove formed in the middle of the bottom surface of the corresponding polytetrafluoroethylene plate 4, and the top surface is close to the top surface of the guide groove.

[0028] The polytetrafluoroethylene plate 4 further ensures that the friction is greatly reduced when the longitudinal moving platform 20 moves forward and backward along the two longitudinal main beams 11, and improves the stability and smoothness of the movement.

[0029] Further, the rear end of the upper connecting beam 31 is movably connected to the top surface of the middle part of the left and right extending connecting beams at the rear part of the longitudinal moving platform through a hinge shaft, the front part of the upper connecting beam 31 is between the two limiting blocks 5 fixed on the middle top surface of the left and right extending connecting beams at the front part of the longitudinal moving platform 20; the bottom surface of the front part of the upper connecting beam 31 is fixed with a bottom plate, the middle part of the bottom surface of the bottom plate is fixed with a polytetrafluoroethylene circular protruding block 9, which is close to the top surface of the longitudinal moving platform 20.

[0030] The side wall of the front part of the upper connecting beam 31 is fixed with two first connecting plates 32 corresponding in up and down, the left or right part of the connecting beam of the front part of the longitudinal moving platform 20 is fixed with a horizontal pushing oil cylinder seat 24 corresponding to the first connecting plate 32, the end connecting part 251 of the main body of the horizontal pushing oil cylinder 25 is movably connected to the horizontal pushing oil cylinder seat 24 through a first hinge shaft, and the end of the push rod of the horizontal pushing oil cylinder 25 is movably connected to the two first connecting plates 32 through a first hinge shaft.

[0031] Further, the middle part of the end connecting part 251 and the middle part of the end of the push rod of the horizontal pushing oil cylinder 25 are both formed with a vertical stepped through hole, the inner diameter of the upper section is smaller than that of the lower section, the connecting sleeve 6 is clamped in the lower section of the vertical stepped through hole, the outer side wall thereof is pressed against the inner side wall of the corresponding lower section, the top surface thereof is pressed against the top surface of the lower section, the inner side wall of the connecting sleeve 6 is spherical, the inner sleeve body 7 is inserted into the connecting sleeve 6, the outer side wall thereof is spherical and tightly contacts with the inner side wall of the connecting sleeve 6 (wherein a recessed hole can be arranged on the outer wall surface of the inner sleeve body 7, a part made of graphite or other self-lubricating material is embedded in the recessed hole, and the outer wall surface thereof tightly contacts with the inner side wall of the connecting sleeve 6, so that the self-lubricating adjustment of the inner sleeve body 7 and the connecting sleeve 6 can be realized), the middle part of the first hinge shaft is located in the middle vertical through hole of the corresponding inner sleeve body 7, and the middle outer side wall of the first hinge shaft is pressed against the inner side wall of the middle vertical through hole of the corresponding inner sleeve body 7.

[0032] The inner side wall of the lower section of the vertical stepped through hole is formed with a clamping groove, and the clamping spring is clamped in the clamping groove and located directly below the corresponding connecting sleeve 6.

[0033] The inner sleeve body 7 reduces the friction between the middle part of the end connecting part 251 and the end of the push rod of the horizontal pushing oil cylinder 25 and the outer side wall of the first hinge shaft during movement or rotation, and small deviation rotation can be realized during operation, further preventing clamping problems and ensuring stable operation.

[0034] During use, the push rod of the longitudinal pushing oil cylinder 14 can be pushed or retracted to realize the forward or backward movement of the longitudinal moving platform 20 along the two longitudinal main beams 11, and the forward or backward position of the lifting can be adjusted, and the push rod of the horizontal pushing oil cylinder 25 can be pushed or retracted to realize the swinging of the front part of the upper connecting beam 31 to the left or right to change the lifting position, meeting the use requirements.

[0035] The oil cylinder displacement sensors are arranged on the horizontal pushing oil cylinder 25 and the longitudinal pushing oil cylinder 14, which can sense the pushing distance of the push rod of the horizontal pushing oil cylinder 25 or the longitudinal pushing oil cylinder 14, feed back the signal to the control host, and control the corresponding hydraulic system to control the horizontal pushing oil cylinder 25 or the longitudinal pushing oil cylinder 14, so as to realize the accuracy of the pushing position of the push rod of the horizontal pushing oil cylinder 25 or the longitudinal pushing oil cylinder 14, ensure that the lifting position can be accurately moved to the specified position, and ensure the lifting effect.

[0036] Finally, it should be noted that the above embodiments are only representative examples of the present application. Obviously, the present application is not limited to the above embodiments, and many modifications can be made. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments shall be considered as falling within the protection scope of the present application.

Claims

1. A bridge crane's lifting platform moving device, comprising an upper longitudinal beam assembly (10), characterized in that: The upper longitudinal beam assembly (10) comprises two front-to-rear extending longitudinal main beams (11), and a plurality of left-to-right extending transverse beams (12) are fixed between the two longitudinal main beams (11); A longitudinal moving platform (20) is arranged on the top surface of the two longitudinal main beams (11), a transverse moving platform (30) is arranged on the top surface of the longitudinal moving platform (20), and a guide cable frame (1), a cable storage disc (2) and a tensioning jack (3) are arranged on the top surface of the transverse moving platform (30); A connecting seat (13) is fixed to the middle of the top surface of one transverse beam (12) at the rear of the upper longitudinal beam assembly (10), a longitudinal pushing oil cylinder (14) is movably connected to the connecting seat (13) through a hinge shaft, and the end of the push rod of the longitudinal pushing oil cylinder (14) is movably connected to two connecting plates at the rear end of the longitudinal moving platform (20) through a hinge shaft; Two left-to-right close and corresponding side guide strips (21) are fixed to the front and rear of the left and right parts of the bottom surface of the longitudinal moving platform (20), and the top of the longitudinal main beam (11) is located between the four corresponding side guide strips (21).

2. The moving device of the hoisting platform of the bridge crane according to claim 1, characterized in that: The side guide strips (21) are made of angle steel, and self-lubricating wear-resistant plates (22) are fixed to the opposite wall surfaces of the two corresponding side guide strips (21), and the inner side wall of the self-lubricating wear-resistant plate (22) is in close contact with one side wall of the corresponding longitudinal main beam (11).

3. The moving device of the hoisting platform of the bridge crane according to claim 1, characterized in that: The bottom surfaces of the left and right parts of the longitudinal moving platform (20) are fixed with front-to-rear extending polytetrafluoroethylene plates (4), and the bottom surfaces of the polytetrafluoroethylene plates (4) are in contact with the top surfaces of the corresponding longitudinal main beams (11).

4. The moving device of the hoisting platform of the bridge crane according to claim 3, characterized in that: The top surface of the longitudinal main beam (11) is fixed with a front-to-rear extending guide plate (111), the upper part of the guide plate (111) is inserted into a front-to-rear extending guide groove formed in the middle of the bottom surface of the corresponding polytetrafluoroethylene plate (4), and the top surface of the guide plate (111) is in close contact with the top surface of the guide groove.

5. The moving device of the hoisting platform of the bridge crane according to claim 1, characterized in that: The transverse moving platform (30) comprises a front-to-rear extending upper connecting beam (31), two left-to-right extending guide cable frames (1) are fixed to the top surface of the rear part of the upper connecting beam (31), the cable storage disc (2) is arranged on the two guide cable frames (1), and the tensioning jack (3) is fixed to the top surface of the front part of the upper connecting beam (31).

6. A mobile hoist platform for a bridge crane as defined in claim 5 wherein: The rear end of the upper connecting beam (31) is movably connected to the middle of the top surface of the left-to-right extending connecting beam at the rear part of the longitudinal moving platform (20) through a hinge shaft, and the front part of the upper connecting beam (31) is located between the two limiting blocks (5) fixed to the middle top surface of the left-to-right extending connecting beam at the front part of the longitudinal moving platform (20). The side wall of the front part of the upper connecting beam (31) is fixed with two first connecting plates (32) corresponding in up-and-down direction, a horizontal pushing oil cylinder seat (24) is fixed to the left or right part of the connecting beam at the front part of the corresponding longitudinal moving platform (20) corresponding to the first connecting plate (32), the end connecting part (251) of the main body of the horizontal pushing oil cylinder (25) is movably connected to the horizontal pushing oil cylinder seat (24) through a first hinge shaft, and the end of the push rod of the horizontal pushing oil cylinder (25) is movably connected to the two first connecting plates (32) through a first hinge shaft.

7. A bridge crane's hoisting platform moving device according to claim 6, characterized in that: The middle part of the end connecting part (251) and the middle part of the end of the push rod of the transverse pushing oil cylinder (25) are both shaped with vertical stepped through holes, the inner diameter of the upper section is smaller than that of the lower section, the connecting sleeve (6) is clamped in the lower section of the vertical stepped through hole, the outer side wall thereof is pressed against the inner side wall of the corresponding lower section, the top surface thereof is pressed against the top surface of the lower section, the inner side wall of the connecting sleeve (6) is spherical, the inner sleeve body (7) is inserted into the connecting sleeve (6), the outer side wall thereof is spherical and tightly contacts and cooperates with the inner side wall of the connecting sleeve (6), the middle part of the first hinged shaft is located in the middle vertical through hole of the corresponding inner sleeve body (7), and the middle outer side wall of the first hinged shaft is pressed against the inner side wall of the middle vertical through hole of the corresponding inner sleeve body (7); The inner side wall of the lower section of the vertical stepped through hole is shaped with a clamping groove, and a clamping spring is clamped in the clamping groove, and the clamping spring is located directly below the corresponding connecting sleeve (6).

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