Fixed pulley block for bridge crane

Abstract

According to the fixed pulley block for the bridge crane, sensing weighing devices are mounted between the two ends of the fixed pulley block and a trolley supporting frame, and a steel wire rope is arranged on the fixed pulley block; the fixed pulley block comprises an upper shaft column, the two ends of the upper shaft column are arranged on the sensing weighing device, the two ends, close to the sensing weighing device, of the upper shaft column are sleeved with side yoke plates and positioning rings, the positioning rings are located on the inner sides of the side yoke plates, the inner sides of the lower ends of the side yoke plates are sleeved with lower shaft columns, and connecting plates are arranged at the outer ends of the lower shaft columns. And a pulley is arranged on the lower shaft column. The fixed pulley block has the beneficial effects that the fixed pulley block is additionally provided with the anti-falling cover, and the anti-falling cover is used for effectively preventing the problem that the steel wire rope on the side edge jumps out due to softness, so that the problem that the steel wire rope jumps out of a groove due to inclined pulling and hanging of the fixed pulley block is solved, and the fixed pulley block can make room for additionally installing a weighing metering instrument; and subsequent overhaul, maintenance and verification of the metering instrument by workers are facilitated, and the overhaul and replacement time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge cranes, in particular to a fixed pulley block used for bridge cranes. Background Art

[0002] Because the scrap steel pile area is irregular in shape, the electromagnetic suction cup cannot be placed in a balanced manner during the suction and lifting process in the scrap steel pile area, which may easily cause the lifting wire rope group to have different tightness. When the wire ropes have different tightness, the wire ropes may easily jump during the suction and lifting process, which not only affects the subsequent suction and lifting operations, but also easily causes the suction cup and the scrap steel to fall off, causing unnecessary accidents.

[0003] See also Figure 6 As shown, at present, the pulley block used by the original bridge crane is installed 425mm away from the bottom of the drum, and the original upper guard is located above the trolley frame. It is made of thin steel plate and cross bar, which passively prevents the wire rope from jumping out of the groove. Once the groove jumps, the resistance is large, which will cause great damage to the wire rope, and it is difficult to disassemble and restore. The fixed pulley block is also responsible for the installation of electronic weighing and measuring instruments for scrap steel and signal transmission. At the same time, the pulley block is installed in the frame, and its operation and maintenance are difficult. Utility Model Content

[0004] The purpose of the utility model is to provide a fixed pulley block for a bridge crane in view of the shortcomings and defects in the prior art. The fixed pulley block has an anti-drop cover, which effectively blocks the side wire rope from jumping out due to looseness. It not only solves the problem of the fixed pulley block jumping out of the groove due to crooked pulling and slanting, but also the fixed pulley block can make room for the installation of weighing and measuring instruments, which is convenient for the staff to subsequently inspect, maintain and calibrate the measuring instruments and reduce the inspection and replacement time.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixed pulley block for a bridge crane, which includes a trolley support frame 1, a drum 2 is provided on the trolley support frame 1, and a fixed pulley block 5 is installed in the middle of one end of the trolley support frame 1, characterized in that: a sensing weighing device 4 is installed between the two ends of the fixed pulley block 5 and the trolley support frame 1, and a steel wire rope 6 is provided on the fixed pulley block 5; the fixed pulley block 5 includes an upper shaft column 51, both ends of the upper shaft column 51 are arranged on the sensing weighing device 4, and side yoke plates 52 and positioning rings 53 are sleeved on the two ends of the upper shaft column 51 close to the sensing weighing device 4, and the positioning ring 53 is located on the inner side of the side yoke plate 52, an anti-slip cover 510 is installed on the side yoke plate 52, and a lower shaft column 55 is provided on the inner side of the lower end of the side yoke plate 52, a connecting plate 54 is provided on the outer end of the lower shaft column 55, and a pulley 58 is provided on the lower shaft column 55.

[0006] Furthermore, the sensor weighing device 4 is provided with a conductive data line 3 for data transmission.

[0007] Furthermore, the side yoke plate 52 is connected to the positioning ring 53 by bolts, and the positioning ring 53 is connected to the upper shaft column 51 by bolts, and the connecting plate 54 is connected to the side yoke plate 52 by bolts.

[0008] Furthermore, a cylindrical roller bearing 59 is provided between the pulley 58 and the lower shaft column 55 .

[0009] Furthermore, there are a plurality of pulleys 58 , and a middle pressure cover 57 is provided between two adjacent pulleys 58 , and side pressure covers 56 are provided on the outer sides of the pulleys 58 at both ends.

[0010] Furthermore, two anti-drop covers 510 are provided, and are respectively arranged on the front and rear sides of the side yoke plate 52 .

[0011] Furthermore, the distance between the axis of the lower shaft column 55 and the lower edge of the reel 2 is 523 mm.

[0012] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: the fixed pulley block is provided with an anti-drop cover, which is used to effectively block the problem of the side wire rope jumping out due to looseness. It not only solves the problem of the fixed pulley block jumping out of the wire rope due to crooked pulling and slanting, but also the fixed pulley block can make room for the installation of weighing and measuring instruments, which is convenient for the staff to subsequently inspect, maintain and calibrate the measuring instruments and reduce the inspection and replacement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the fixed pulley block in the utility model.

[0016] Figure 3 yes Figure 2 The corresponding left view structure diagram.

[0017] Figure 4 It is a structural schematic diagram of the conductive data line and the sensor weighing device in the utility model.

[0018] Figure 5 It is a structural schematic diagram of the second embodiment of the present utility model.

[0019] Figure 6 It is a structural schematic diagram of the prior art.

[0020] Explanation of the reference numerals in the accompanying drawings: trolley support frame 1, reel 2, transmission data line 3, sensor weighing device 4, fixed pulley block 5, wire rope 6, middle connecting plate 7, upper shaft column 51, side yoke plate 52, positioning ring 53, connecting plate 54, lower shaft column 55, side pressure cover 56, middle pressure cover 57, pulley 58, cylindrical roller bearing 59, anti-drop cover 510. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] See also Figure 1-Figure 4 As shown, the technical solution adopted in this specific embodiment is: it includes a trolley support frame 1, a drum 2 is provided on the trolley support frame 1, and a fixed pulley block 5 is installed in the middle of one end of the trolley support frame 1, characterized in that: a sensing weighing device 4 is installed between the two ends of the fixed pulley block 5 and the trolley support frame 1, and a steel wire rope 6 is provided on the fixed pulley block 5; the fixed pulley block 5 includes an upper shaft column 51, both ends of the upper shaft column 51 are arranged on the sensing weighing device 4, and side yoke plates 52 and positioning rings 53 are sleeved on the two ends of the upper shaft column 51 close to the sensing weighing device 4, and the positioning ring 53 is located on the inner side of the side yoke plate 52, an anti-slip cover 510 is installed on the side yoke plate 52, and a lower shaft column 55 is provided on the inner side of the lower end of the side yoke plate 52, a connecting plate 54 is provided on the outer end of the lower shaft column 55, and a pulley 58 is provided on the lower shaft column 55.

[0023] To be more specific, the sensor weighing device 4 is provided with a conductive data line 3 for data transmission.

[0024] More specifically, the side yoke plate 52 is connected to the positioning ring 53 by bolts, and the positioning ring 53 is connected to the upper shaft column 51 by bolts, and the connecting plate 54 is connected to the side yoke plate 52 by bolts. The use of bolts for connection can increase the connection stability between the two on the one hand, and facilitate the subsequent maintenance and disassembly of the staff on the other hand.

[0025] More specifically, a cylindrical roller bearing 59 is passed between the pulley 58 and the lower shaft column 55. The cylindrical roller bearing 59 can increase the smoothness between the pulley 58 and the lower shaft column 55, ensuring that the pulley 58 slides better.

[0026] More specifically, there are several pulleys 58, and a middle pressure cover 57 is provided between two adjacent pulleys 58, and side pressure covers 56 are provided on the outer sides of the pulleys 58 at both ends. The pulleys 58 are positioned by the side pressure covers 56 and the middle pressure covers 57, effectively preventing the pulleys 58 from unnecessary deviation and sliding.

[0027] More specifically, two anti-drop covers 510 are provided, and are respectively arranged on the front and rear sides of the side yoke plate 52. The anti-drop covers 510 effectively block the side wire rope from jumping out due to looseness.

[0028] To be more specific, the distance between the axis of the lower shaft column 55 and the lower edge of the reel 2 is 523 mm.

[0029] Embodiment 2

[0030] See also Figure 5 As shown, the difference between this embodiment and the first embodiment is that a middle connecting plate 7 is provided in the middle of the upper shaft column 51, and the middle of the upper shaft column 51 is connected to the middle of the lower shaft column 55 through the middle connecting plate 7. The middle connecting plate 7 can increase the support points of the lower shaft column 55, thereby increasing the force strength of the lower shaft column 55, increasing the stability of the lower shaft column 55, and thus extending the service life of the lower shaft column 55.

[0031] Working principle of the utility model: the fixed pulley block is suspended by adding an upper shaft column 51 and a side yoke plate 52. The added upper shaft column 51 and the fixed pulley block 5 form a suspension type. The axis line pulley block of the lower shaft column 55 is installed at a distance of 523mm from the lower part of the drum 2, and is sunken 98mm relative to the distance between the center of the upper shaft column 51 and the lower shaft column 55. The lower shaft column 55 is not fixed in the trolley support frame 1, but is composed of the upper shaft column 51 and the sensor weighing device 4 to form a hanging group, which is stressed on both sides of the upper shaft column 51, and the overall equipment can be assembled on the ground, realizing spare parts. It is supplied as a complete set. Because the force is applied on the left and right sides of the upper shaft column 51, a sensor weighing device 4 is installed and the information is transmitted to the central controller in the cab through a data transmission line 3, so that the weight change can be reflected in time. A load limit protection device is then set to provide overload protection in time, while also protecting the lifting equipment and the wire rope 6. The added side yoke plate 52 can be installed in the diameter direction of the fixed pulley block 5, and the anti-slip cover 510 is locked on both sides of the side yoke plate 52 by bolts. The anti-slip cover 510 effectively blocks the side wire rope from jumping out due to looseness.

[0032] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A fixed pulley block for a bridge crane, characterized in that: It comprises a trolley support frame (1), a drum (2) is provided on the trolley support frame (1), and a fixed pulley block (5) is installed in the middle of one end of the trolley support frame (1), and is characterized in that a sensor weighing device (4) is installed between the two ends of the fixed pulley block (5) and the trolley support frame (1), and a steel wire rope (6) is provided on the fixed pulley block (5); The fixed pulley block (5) comprises an upper shaft column (51), both ends of the upper shaft column (51) are arranged on the sensing weighing device (4), and side yoke plates (52) and positioning rings (53) are sleeved on both ends of the upper shaft column (51) close to the sensing weighing device (4), and the positioning ring (53) is located on the inner side of the side yoke plate (52), an anti-drop cover (510) is installed on the side yoke plate (52), and a lower shaft column (55) is arranged on the inner side of the lower end of the side yoke plate (52), a connecting plate (54) is arranged on the outer end of the lower shaft column (55), and a pulley (58) is arranged on the lower shaft column (55).

2. A fixed pulley block for a bridge crane according to claim 1, characterized in that: The sensor weighing device (4) is provided with a conductive data line (3) for data transmission.

3. The fixed pulley block for a bridge crane according to claim 1, characterized in that: The side yoke plate (52) and the positioning ring (53) are connected by bolts, and the positioning ring (53) is connected to the upper shaft column (51) by bolts, and the connecting plate (54) and the side yoke plate (52) are connected by bolts.

4. The fixed pulley block for a bridge crane according to claim 1, characterized in that: A cylindrical roller bearing (59) is provided between the pulley (58) and the lower shaft column (55).

5. The fixed pulley block for a bridge crane according to claim 1, characterized in that: There are a plurality of pulleys (58), and a middle pressure cover (57) is provided between two adjacent pulleys (58), and side pressure covers (56) are provided on the outer sides of the pulleys (58) at both ends.

6. The fixed pulley block for a bridge crane according to claim 1, characterized in that: Two anti-drop covers (510) are provided and are respectively arranged on the front and rear sides of the side yoke plate (52).

7. The fixed pulley block for a bridge crane according to claim 1, characterized in that: The distance between the axis of the lower shaft column (55) and the lower edge of the reel (2) is 523 mm.

8. The fixed pulley block for a bridge crane according to claim 1, characterized in that: A middle connecting plate (7) is provided in the middle of the upper shaft column (51), and the middle of the upper shaft column (51) is connected to the middle of the lower shaft column (55) through the middle connecting plate (7).

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