Portal frame

Abstract

The utility model relates to the technical field of municipal road and bridge construction, in particular to a portal frame which comprises a moving mechanism and a hoisting mechanism used for hoisting building materials, the hoisting mechanism is installed on the moving mechanism and comprises a supporting plate, a reinforcing plate is installed above the supporting plate, and a hoisting assembly is installed on the reinforcing plate. By arranging the hoisting mechanism, when the electric hoist is damaged and needs to be maintained, the limiting of the cross beam is relieved firstly, then the motor is started, the motor operates to drive the second threaded rod to rotate, the second threaded rod rotates the threaded sleeve to descend, the threaded sleeve drives the lifting plate to descend through the lifting rod, and the lifting plate drives the cross beam and the electric hoist to descend; when the electric hoist descends to the corresponding height, the motor is closed, then a worker can maintain the damaged electric hoist, the height of the electric hoist in the device is easy to adjust, and therefore great convenience is brought to maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal road and bridge construction, in particular to a gantry. Background Art

[0002] The gantry is a new type of small lifting gantry developed to meet the daily production needs of small and medium-sized factories (companies) for handling equipment, warehouse loading and unloading, lifting and repairing heavy equipment, and material transportation. It is suitable for manufacturing molds, auto repair factories, mines, civil construction sites, and other places where lifting is required. It is commonly used in construction to transport materials and move construction personnel up and down to achieve mechanization of lifting. It can reduce manpower, reduce production and operation costs, and improve work efficiency. Gantry is needed to lift construction materials during municipal road and bridge construction.

[0003] Announcement No. (CN214269951U) discloses a gantry for road and bridge construction. When the gantry body vibrates, the mounting plate moves downward, so that the extension rod at the lower end of the mounting plate is squeezed into the rotating sleeve at the lower end, thereby effectively buffering the vibration through the spring at the lower end, and at the same time, the extension rod at the upper end is pulled to slide in the rotating sleeve at the upper end, thereby stretching the spring at the upper end, and then effectively reducing shock through the spring at the upper end. The height of the electric hoist in the above device is relatively high. Once damaged, it is inconvenient to repair and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a gantry frame in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A gantry comprises a moving mechanism and a lifting mechanism for lifting building materials, wherein the lifting mechanism is installed on the moving mechanism;

[0007] The lifting mechanism includes a support plate, a reinforcement plate installed above the support plate, a lifting assembly installed on the reinforcement plate, the lifting assembly includes a drive box, a motor fixed inside the drive box, a second threaded rod fixed at the output end of the motor, a threaded sleeve installed outside the second threaded rod, a lifting rod fixed at both sides of the threaded sleeve, a lifting plate fixed at the end of the lifting rod away from the threaded sleeve, a crossbeam fixed on the lifting plate, and an electric hoist installed on the crossbeam.

[0008] Preferably, the moving mechanism includes a moving plate, the moving wheel is installed below the moving plate, the arc block is installed on the side of the moving plate, the first threaded rod is installed on the inner side of the arc block, the knob is fixed above the first threaded rod, and the fixed block is fixed below the first threaded rod.

[0009] Preferably, a limiting mechanism is installed above the lifting mechanism, the limiting mechanism includes a support block, a fixed cylinder is installed above the support block, an electric push rod is installed inside the fixed cylinder, a movable block is fixed at one end of the electric push rod, and a limiting seat is fixed at a side of the movable block away from the electric push rod.

[0010] Preferably, the knob is welded to the first threaded rod, and the knob is made of stainless steel.

[0011] Preferably, the angle between the reinforcement plate and the drive box is fifteen degrees, and the motor and the drive box are connected by bolts.

[0012] Preferably, the fixing tube is welded to the supporting blocks, and the number of supporting blocks on each fixing tube is five.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] By setting up a lifting mechanism, when the electric hoist is damaged and needs repair, first release the limit of the beam, then start the motor, the motor operation drives the second threaded rod to rotate, the second threaded rod rotates the threaded sleeve to descend, the threaded sleeve drives the lifting plate to descend through the lifting rod, the lifting plate drives the beam and the electric hoist to descend, the motor is turned off when the electric hoist descends to the corresponding height, and then the staff can repair the damaged electric hoist. The height of the electric hoist in the device is easy to adjust, which greatly facilitates maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 It is a structural schematic diagram of a gantry described in the utility model;

[0017] Figure 2 This is a front view of a gantry described in the utility model;

[0018] Figure 3 It is an enlarged cross-sectional view of a driving box in a gantry described in the utility model;

[0019] Figure 4 It is an enlarged structural schematic diagram of a threaded sleeve in a gantry described in the utility model;

[0020] Figure 5 It is an enlarged cross-sectional view of a limiting mechanism in a gantry described in the utility model.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Moving mechanism; 101. Moving plate; 102. Moving wheel; 103. Arc block; 104. First threaded rod; 105. Knob; 106. Fixed block; 2. Lifting mechanism; 201. Support plate; 202. Reinforcement plate; 203. Drive box; 204. Motor; 205. Second threaded rod; 206. Threaded sleeve; 207. Lifting rod; 208. Lifting plate; 209. Crossbeam; 210. Electric hoist; 3. Limiting mechanism; 301. Support block; 302. Fixed cylinder; 303. Electric push rod; 304. Movable block; 305. Limiting seat. DETAILED DESCRIPTION

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1-Figure 5 As shown, a gantry comprises a moving mechanism 1 and a lifting mechanism 2 for lifting building materials, wherein the lifting mechanism 2 is installed on the moving mechanism 1 .

[0027] In the utility model, the moving mechanism 1 includes a moving plate 101, a moving wheel 102, an arc block 103, a first threaded rod 104, a knob 105, and a fixed block 106. The moving wheel 102 is installed below the moving plate 101, the arc block 103 is installed on the side of the moving plate 101, the first threaded rod 104 is installed on the inner side of the arc block 103, the knob 105 is fixed above the first threaded rod 104, and the fixed block 106 is fixed below the first threaded rod 104; the knob 105 is welded to the first threaded rod 104, and the material of the knob 105 is stainless steel; when using the device, the device is moved to the corresponding position, and then the knob 105 is rotated, the knob 105 drives the first threaded rod 104 to rotate, the rotating first threaded rod 104 descends under the action of the arc block 103, and the fixed block 106 descends accordingly, and the fixed block 106 descends and contacts the ground, thereby completing the fixation of the device.

[0028] In the present invention, the lifting mechanism 2 includes a support plate 201, a reinforcement plate 202, a drive box 203, a motor 204, a second threaded rod 205, a threaded sleeve 206, a lifting rod 207, a lifting plate 208, a cross beam 209, and an electric hoist 210. The reinforcement plate 202 is installed above the support plate 201, the drive box 203 is installed on the reinforcement plate 202, the motor 204 is fixed inside the drive box 203, the second threaded rod 205 is fixed to the output end of the motor 204, the threaded sleeve 206 is installed on the outside of the second threaded rod 205, the lifting rod 207 is fixed on both sides of the threaded sleeve 206, the lifting plate 208 is fixed to the end of the lifting rod 207 away from the threaded sleeve 206, the cross beam 209 is fixed on the lifting plate 208, and the electric hoist 210 is installed on the cross beam 209. On the beam 209; the angle between the reinforcement plate 202 and the drive box 203 is fifteen degrees, and the motor 204 is connected to the drive box 203 by bolts; when the electric hoist 210 is damaged and needs to be repaired, the limit of the beam 209 is first released, and then the motor 204 is started. The operation of the motor 204 drives the second threaded rod 205 to rotate, and the second threaded rod 205 rotates the threaded sleeve 206 to descend, and the threaded sleeve 206 drives the lifting plate 208 to descend through the lifting rod 207, and the lifting plate 208 drives the beam 209 and the electric hoist 210 to descend. When the electric hoist 210 descends to the corresponding height, the motor 204 is turned off, and then the staff can repair the damaged electric hoist 210. The height of the electric hoist 210 in the device is easy to adjust, which greatly facilitates maintenance.

[0029] In the utility model, a limiting mechanism 3 is installed above the lifting mechanism 2, and the limiting mechanism 3 includes a support block 301, a fixed cylinder 302, an electric push rod 303, a movable block 304, and a limiting seat 305. The fixed cylinder 302 is installed above the support block 301, the electric push rod 303 is installed inside the fixed cylinder 302, the movable block 304 is fixed at one end of the electric push rod 303, and the limiting seat 305 is fixed on the side of the movable block 304 away from the electric push rod 303; the fixed cylinder 302 is welded to the support block 301, and the number of support blocks 301 on each fixed cylinder 302 is five; the support block 301, the fixed cylinder 302, the electric push rod 303, the movable block 304 and the limiting seat 305 work together to limit the beam 209, which effectively improves the stability of the beam 209.

[0030] In the above structure, when the device is used, the device is moved to the corresponding position, and then the knob 105 is turned, and the knob 105 drives the first threaded rod 104 to rotate. The rotating first threaded rod 104 descends under the action of the arc block 103, and the fixed block 106 descends accordingly. The fixed block 106 descends and contacts the ground, so that the device is fixed. After the device is fixed, the building materials can be hoisted. When the electric hoist 210 is damaged and needs to be repaired, the electric push rod 303 is started, and the electric push rod 303 contracts to drive the movable block 304 and the limit seat 305 moves, the limit seat 305 moves and separates from the drive box 203, the limit of the beam 209 is released, and the motor 204 is started again. The operation of the motor 204 drives the second threaded rod 205 to rotate, and the second threaded rod 205 rotates the threaded sleeve 206 to descend, and the threaded sleeve 206 drives the lifting plate 208 to descend through the lifting rod 207, and the lifting plate 208 drives the beam 209 and the electric hoist 210 to descend. When the electric hoist 210 descends to the corresponding height, the motor 204 is turned off, and then the staff can repair the damaged electric hoist 210.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A gantry, comprising a moving mechanism (1), Features: It also includes a lifting mechanism (2) for lifting building materials, wherein the lifting mechanism (2) is installed on the moving mechanism (1); The lifting mechanism (2) comprises a support plate (201), a reinforcement plate (202) is installed above the support plate (201), a lifting assembly is installed on the reinforcement plate (202), the lifting assembly comprises a drive box (203), a motor (204) is fixed inside the drive box (203), a second threaded rod (205) is fixed at the output end of the motor (204), a threaded sleeve (206) is installed on the outside of the second threaded rod (205), a lifting rod (207) is fixed on both sides of the threaded sleeve (206), a lifting plate (208) is fixed on one end of the lifting rod (207) away from the threaded sleeve (206), a crossbeam (209) is fixed on the lifting plate (208), and an electric hoist (210) is installed on the crossbeam (209).

2. A gantry according to claim 1, Features: The moving mechanism (1) comprises a moving plate (101), a moving wheel (102) installed below the moving plate (101), an arc block (103) installed on the side of the moving plate (101), a first threaded rod (104) installed inside the arc block (103), a knob (105) fixed above the first threaded rod (104), and a fixed block (106) fixed below the first threaded rod (104).

3. A gantry according to claim 2, Features: A limiting mechanism (3) is installed above the lifting mechanism (2), and the limiting mechanism (3) comprises a support block (301), a fixed cylinder (302) installed above the support block (301), an electric push rod (303) installed inside the fixed cylinder (302), a movable block (304) fixed to one end of the electric push rod (303), and a limiting seat (305) fixed to a side of the movable block (304) away from the electric push rod (303).

4. A gantry according to claim 2, Features: The knob (105) is welded to the first threaded rod (104), and the knob (105) is made of stainless steel.

5. A gantry according to claim 1, Features: The included angle between the reinforcement plate (202) and the drive box (203) is fifteen degrees, and the motor (204) and the drive box (203) are connected by bolts.

6. A gantry according to claim 3, Features: The fixed cylinder (302) is welded to the support block (301), and the number of the support blocks (301) on each fixed cylinder (302) is five.

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