Material elevator

Abstract

The present invention discloses a material hoist, which relates to the technical field of engineering machinery, including: a frame, a lifting arm, a first hydraulic cylinder, a second hydraulic cylinder, a first rotating frame, a second rotating frame, a connecting arm, a supporting rod and a material gantry, wherein: the two ends of the lifting arm are respectively hinged to one side of the first rotating frame and the frame; the first hydraulic cylinder is arranged below the lifting arm, and the two ends of the first hydraulic cylinder are respectively hinged to the middle of the lifting arm and the frame; the second hydraulic cylinder is arranged above the lifting arm, and the two ends of the second hydraulic cylinder are respectively hinged to the middle of the second rotating frame and the frame; one side of the second rotating frame is hinged to the middle of the lifting arm; the two ends of the connecting arm are respectively hinged to the other side of the first rotating frame and the other side of the second rotating frame; one end of the supporting rod is fixedly connected to the first rotating frame, and the other end of the supporting rod is hinged to the material gantry. The device provided by the present invention can be used in a limited height environment, improve construction efficiency, save project costs, and can also quickly lift materials to an accurate height.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a material hoist. Background Art

[0002] Truck cranes and gantry cranes are widely used in the field of engineering construction. During the construction process, there are long and large goods that need to be lifted in remote, rugged and high-requirement areas, such as low factories. Truck cranes need to extend their arms to work, but cannot do so due to height reasons. Gantry cranes take a long time to assemble, are expensive, and require a long time to be inspected before use, so they cannot work in time. In addition, in low construction sites, there are strict requirements for precise lifting height. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a material hoist, which is suitable for environments with limited height, improves construction efficiency, saves project costs, and can also lift materials to an accurate height.

[0004] To achieve the above-mentioned object of the invention, the technical solution of the present invention is as follows:

[0005] The material hoist comprises: a frame, a lifting arm, a first hydraulic cylinder, a second hydraulic cylinder, a first rotating frame, a second rotating frame, a connecting arm, a supporting rod and a material gantry, wherein:

[0006] Both ends of the lifting arm are respectively hinged to one side of the first rotating frame and the vehicle frame;

[0007] The first hydraulic cylinder is arranged below the lifting arm, and two ends of the first hydraulic cylinder are respectively hinged to the middle part of the lifting arm and the frame;

[0008] The second hydraulic cylinder is arranged above the lifting arm, and two ends of the second hydraulic cylinder are respectively hinged to the middle of the second rotating frame and the frame;

[0009] One side of the second rotating frame is hinged to the middle part of the lifting arm;

[0010] The two ends of the connecting arm are respectively hinged to the other side of the first rotating frame and the other side of the second rotating frame;

[0011] One end of the support rod is fixedly connected to the first rotating frame, and the other end of the support rod is hinged to the material portal frame.

[0012] Furthermore, the material gantry comprises a top frame, a lifting frame, a folding frame and a third hydraulic cylinder, wherein:

[0013] The top frame is hinged to the support rod;

[0014] The lifting frames are slidably and symmetrically arranged at both ends of the top frame;

[0015] The folding frame is provided at the lower end of the lifting frame, and the folding frame is hinged to the lifting frame;

[0016] The third hydraulic cylinder is arranged inside the lifting frame and the folding frame, and two ends of the third hydraulic cylinder are respectively hinged to the lifting frame and the folding frame.

[0017] Further, the folding frame comprises a bracket, a support and a fourth hydraulic cylinder, wherein:

[0018] One end of the third hydraulic cylinder is hinged to the bracket;

[0019] One end of the bracket is hinged to the lifting frame, and the other end of the bracket is provided with a fork;

[0020] Two ends of the bifurcated portion are respectively hinged with a bracket;

[0021] One end of the fourth hydraulic cylinder is hinged to the bracket, and the other end is hinged to the inner ends of the two brackets respectively.

[0022] Furthermore, the fourth hydraulic cylinder is arranged outside the folding frame.

[0023] Furthermore, a slide rail is provided below the top frame, and a winch is provided on the slide rail.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The hoist provided by the present invention does not require the boom of a car crane to operate, and is suitable for environments with limited heights. It can be driven and moved autonomously, and can be quickly opened for construction after arriving at the site. It also avoids the situation where the gantry crane assembly takes a long time and is expensive, and needs a long time to be inspected before it can be used, thereby improving construction efficiency and saving project costs. The first hydraulic cylinder is arranged below the lifting arm, and one end of the first hydraulic cylinder is hinged to the middle of the lifting arm. When the first hydraulic cylinder and the hinge point in the middle of the lifting arm have a certain lift, when the oil pressure of the second hydraulic cylinder remains unchanged, the material gantry will have a relatively large lift accordingly, which is convenient for quickly lifting the material to a predetermined height. The combined linkage design of the second hydraulic cylinder, the second rotating frame, the connecting arm and the first rotating frame is adopted, which is convenient for fine-tuning the telescopic adjustment of the second hydraulic cylinder, and then fine-tuning the height of the material gantry is realized through the telescopic fine-tuning of the second hydraulic cylinder. The hoist provided by the present invention has a related linkage design on a lifting arm, which realizes the function of quickly lifting the material to a predetermined position and fine-tuning the height near the predetermined position, so as to achieve the purpose of quickly lifting the material to an accurate height.

[0026] 2. The sliding design of the lifting frame of the material gantry allows the top frame to match the height of the lifting frame with the height of the material, reducing the shaking radius of the material during the lifting process and improving construction safety.

[0027] 3. The design of the folding frame of the material gantry fully compresses the upper and lower spaces of the material gantry to meet the requirement of lifting the materials to the corresponding height as much as possible in a height-restricted environment.

[0028] 4. The folding frame includes a bracket, a support and a fourth hydraulic cylinder. The left and right brackets are 90 degrees to the lifting frame. When materials are placed on the brackets, the load-bearing area of ​​the folding frame can be increased, which facilitates the stable placement of materials and improves the stress condition of the bracket when bearing weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the front structural view of a material elevator according to an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of a material elevator without loading materials according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the material loading structure of a material elevator according to an embodiment of the present invention (material is not drawn).

[0032] In the figure, 1-frame, 2-lifting arm, 3-first hydraulic cylinder, 4-second hydraulic cylinder, 5-first rotating frame, 6-second rotating frame, 7-connecting arm, 8-support rod, 9-material gantry, 91-top frame, 911-slide rail, 912-winch, 92-lifting frame, 93-folding frame, 931-bracket, 932-support, 933-fourth hydraulic cylinder, 94-third hydraulic cylinder. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with embodiments so that those skilled in the art can implement the invention with reference to the description.

[0034] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The orientation or position relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention 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, and therefore cannot be understood as a limitation of the present invention.

[0035] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is a description of the embodiments in conjunction with the accompanying drawings.

[0036] Example

[0037] like Figure 1 As shown, the material hoist comprises: a frame 1, a lifting arm 2, a first hydraulic cylinder 3, a second hydraulic cylinder 4, a first rotating frame 5, a second rotating frame 6, a connecting arm 7, a supporting rod 8 and a material gantry 9, wherein:

[0038] Both ends of the lifting arm 2 are respectively hinged to one side of the first rotating frame 5 and the frame 1;

[0039] The first hydraulic cylinder 3 is arranged below the lifting arm 2, and the two ends of the first hydraulic cylinder 3 are respectively hinged to the middle part of the lifting arm 2 and the frame 1, and the first hydraulic cylinder 3 includes a first cylinder barrel and a first cylinder rod, the first cylinder barrel is hinged to the frame 1, and the first cylinder rod is hinged to the middle part of the lifting arm 2. When the oil pressure of the first cylinder barrel increases, the first cylinder rod will extend outward from the first cylinder barrel. Due to the hinge relationship between the frame 1, the lifting arm 2 and the first hydraulic cylinder 3, the extension of the first cylinder rod will push the lifting arm 2 to rotate clockwise and prop it up to complete the initial lifting; after use, the oil pressure of the first cylinder barrel is released, the first cylinder rod is returned to the first cylinder barrel, the lifting arm 2 rotates counterclockwise and descends, and the first hydraulic cylinder 3 is hinged to the middle part of the lifting arm 2. When the first hydraulic cylinder 3 and the hinge point in the middle of the lifting arm 2 have a certain lift, when the oil pressure of the second hydraulic cylinder 4 does not change, the material gantry 9 will have a relatively large lift accordingly, which is convenient for quickly lifting the material to near the predetermined height;

[0040] The second hydraulic cylinder 4 is arranged above the lifting arm 2, and the two ends of the second hydraulic cylinder 4 are respectively hinged to the middle of the second rotating frame 6 and the frame 1, and the second hydraulic cylinder 4 includes a second cylinder barrel and a second cylinder rod, the second cylinder barrel is hinged to the frame 1, and the second cylinder rod is hinged to the middle of the second rotating frame 6;

[0041] One side of the second rotating frame 6 is hinged to the middle part of the lifting arm 2. When the oil pressure of the second cylinder increases, the second cylinder rod will extend outward from the second cylinder, driving the second rotating frame 6 to swing counterclockwise; conversely, when the oil pressure of the second cylinder decreases, the second cylinder rod will retract into the second cylinder, driving the second rotating frame 6 to swing clockwise;

[0042] The two ends of the connecting arm 7 are respectively hinged to the other side of the first rotating frame 5 and the other side of the second rotating frame 6, so that the first rotating frame 5 and the second rotating frame 6 can swing in the same direction;

[0043] If one end of the second hydraulic cylinder 4 is hinged to the frame 1, and the other end is directly connected to the first rotating frame 5 (without the second rotating frame 6 and the connecting arm 7 in the middle), on the one hand, the second hydraulic cylinder 4 is too long and the cost is high, and it is also difficult to fine-tune its extension and contraction. It is also difficult to fine-tune the height of the material gantry 9 by extending and contracting the second hydraulic cylinder 4. Here, the combined linkage design of the second hydraulic cylinder 4, the second rotating frame 6, the connecting arm 7 and the first rotating frame 5 is adopted, which facilitates the fine-tune of the extension and contraction of the second hydraulic cylinder 4, and then achieves the fine-tune of the height of the material gantry 9 by the fine-tune of the extension and contraction of the second hydraulic cylinder 4.

[0044] One end of the support rod 8 is fixedly connected to the first rotating frame 5, and the other end of the support rod 8 is hinged to the material portal frame 9. The material portal frame is used to load materials. The support rod 8 is hinged to the material portal frame 9 to facilitate the loading and unloading of materials by the material portal frame 9.

[0045] The implementation principle of the present invention is as follows:

[0046] When the material is to be lifted, the material is put into the material gantry 9, and the oil pressure of the first cylinder of the first hydraulic cylinder 3 is first increased, and the first cylinder rod extends outward from the first cylinder. Due to the hinged relationship between the frame 1, the lifting arm 2 and the first hydraulic cylinder 3, the extension of the first cylinder rod will push the lifting arm 2 to rotate clockwise and prop it up. When the oil pressure of the second hydraulic cylinder 4 remains unchanged, the material gantry 9 will be lifted accordingly to lift the material to the vicinity of the predetermined position; then by increasing or decreasing the oil pressure of the second cylinder of the second hydraulic cylinder 4, the second rotating frame 6 is driven to swing counterclockwise or clockwise, and the first rotating frame 5 is driven to swing counterclockwise or clockwise synchronously through the connecting arm 7, and then the lifting height of the material gantry 9 is further fine-tuned through the support rod 8 to accurately lift the material to the predetermined position. When it is necessary to lift a long material of several tens of meters, such as an object of 30 meters long, 2 meters wide and 2 meters high, the truck crane cannot operate, and the gantry crane cannot be on site in the short term, two hoists provided by the present invention can be used to cooperate with each other, that is, the two hoists work relative to each other to lift the two ends of the material respectively.

[0047] In summary, the hoist provided by the present invention does not require the boom of a car crane to operate, and is suitable for environments with limited heights; it can be driven and moved autonomously, and the hoist can be quickly opened for construction after arriving at the site, which also avoids the situation where the gantry crane assembly takes a long time and is expensive, and needs to be inspected for a long time before it can be used, thereby improving construction efficiency and saving project costs. The first hydraulic cylinder is arranged below the lifting arm, and one end of the first hydraulic cylinder is hinged to the middle of the lifting arm. When the first hydraulic cylinder 3 and the hinge point in the middle of the lifting arm 2 have a certain lift, when the oil pressure of the second hydraulic cylinder 4 does not change, the material gantry 9 will have a relatively large lift accordingly, which is convenient for quickly lifting the material to a predetermined height; the combined linkage design of the second hydraulic cylinder 4, the second rotating frame 6, the connecting arm 7 and the first rotating frame 5 is adopted, which is convenient for fine adjustment of the telescopic adjustment of the second hydraulic cylinder 4, and then the fine adjustment of the height of the material gantry 9 is realized through the telescopic adjustment of the second hydraulic cylinder 4. The hoist provided by the present invention is designed with a related linkage on a lifting arm to realize the function of quickly lifting the material to the predetermined position attachment and fine adjustment of the height at the predetermined position attachment, so as to achieve the purpose of quickly lifting the material to an accurate height.

[0048] As a preferred solution, Figure 2 As shown, the material gantry 9 includes a top frame 91, a lifting frame 92, a folding frame 93 and a third hydraulic cylinder 94, wherein:

[0049] The top frame 91 is hinged to the support rod 8 for overall lifting and load bearing;

[0050] The lifting frames 92 are respectively and symmetrically arranged at the two ends of the top frame 91. A lifting frame 92 is arranged at each of the left and right ends of the top frame 91. The lifting frames 92 are designed with many holes along their length. These holes are used to adjust the height of the top frame 91 on the lifting frame 92 to match the height of the material. During the lifting process, the swaying radius of the material is reduced to improve the construction safety. After the top frame 91 is moved into place, it is fixed with pins;

[0051] The folding frame 93 is arranged at the lower end of the lifting frame 92 and is hinged to the lifting frame 92. The lower end of the lifting frames 92 on the left and right sides is hinged to a folding frame 93 respectively.

[0052] The third hydraulic cylinder 94 is arranged on the inner side of the lifting frame 92 and the folding frame 93, and the two ends of the third hydraulic cylinder 94 are respectively hinged to the lifting frame 92 and the folding frame 93, that is, a third hydraulic cylinder 94 is respectively arranged on the inner side of the lifting frame 92 and the folding frame 93 on the left side and the lifting frame 92 and the folding frame 93 on the right side, and the third hydraulic cylinder 94 includes a third cylinder barrel and a third cylinder rod, and the third cylinder barrel and the third cylinder rod are respectively hinged to the lifting frame 92 and the folding frame 93. When the oil pressure of the third cylinder barrel is reduced, the third cylinder rod can respectively drive the folding frames 93 on the left and right sides to rotate inward. When the folding frame 93 is fixed at 90 degrees with the lifting frame 92, the material can be placed on the folding frame 93. The design of the folding frame 93 fully compresses the upper and lower space of the material gantry 9 to meet the requirement of lifting the material to the corresponding height as much as possible in a height-restricted environment.

[0053] As a preferred solution, the folding frame 93 includes a bracket 931, a support 932 and a fourth hydraulic cylinder 933, wherein:

[0054] One end of the third hydraulic cylinder 94 is hinged to the bracket 931;

[0055] One end of the bracket 931 is hinged to the lifting frame 92, and the other end of the bracket 931 is provided with a fork portion, each folding frame 93 includes a bracket 931, and each fork portion has two ends;

[0056] The two ends of the forked part are respectively hinged with a bracket 932, and one bracket 931 is hinged with the two brackets 932. When the elevator is not working, the two brackets 932 are flush with each other, and the flushing direction is perpendicular to the bracket 931 and the lifting frame 92, and supported on the ground, so as to facilitate the adjustment of the height of the top frame 91 on the lifting frame 92;

[0057] One end of the fourth hydraulic cylinder 933 is hinged to the bracket 931, and the other end is hinged to the inner side ends of the two brackets 932 respectively. The inner side end refers to the end of the two brackets 932 that are close to each other when the two brackets 932 of the same bracket 931 are flush. The fourth hydraulic cylinder 933 includes a fourth cylinder barrel and a fourth cylinder rod. The fourth cylinder barrel and the bracket 931 are hinged. The fourth cylinder rod is hinged to the inner side ends of the two brackets 932 through two support rods. When the oil pressure of the fourth cylinder barrel increases, the two support rods respectively drive the corresponding bracket 932 to rotate, and the inner side ends of the two brackets 932 move away from each other. When the brackets 932 are parallel, they stop rotating and are fixed. In this way, when the left and right brackets 931 are 90 degrees with the lifting frame 92 and materials are placed on the bracket 931, the load-bearing area of ​​the folding frame 93 can be increased, which is convenient for placing materials stably and improving the stress condition of the bracket 931 when bearing weight. Figure 3 The fourth hydraulic cylinder 933 is arranged on the outside of the folding frame 93, that is, when the folding frame 93 is flush with the lifting frame 92, a fourth hydraulic cylinder 933 is arranged on the outside of the folding frames 93 on both sides, and when the bracket 931 is 90 degrees with the lifting frame 92, the fourth hydraulic cylinder 933 is correspondingly located below the bracket 931, and does not affect the placement of materials on the bracket 931.

[0058] As a preferred solution, a slide rail 911 is provided under the top frame 91, and a winch 912 is provided on the slide rail 911. The winch 912 can slide on the slide rail 911. When the elevator lifts the material to the vicinity of the corresponding position, the material is lifted to the corresponding position by the winch 912 to complete the material unloading work.

[0059] Although the present invention has been described in detail above with specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. Material elevator, It is characterized in that include: Frame, lifting arm, first hydraulic cylinder, second hydraulic cylinder, first rotating frame, second rotating frame, connecting arm, supporting rod and material gantry, wherein: Both ends of the lifting arm are respectively hinged to one side of the first rotating frame and the vehicle frame; The first hydraulic cylinder is arranged below the lifting arm, and two ends of the first hydraulic cylinder are respectively hinged to the middle part of the lifting arm and the frame; The second hydraulic cylinder is arranged above the lifting arm, and two ends of the second hydraulic cylinder are respectively hinged to the middle of the second rotating frame and the frame; One side of the second rotating frame is hinged to the middle part of the lifting arm; The two ends of the connecting arm are respectively hinged to the other side of the first rotating frame and the other side of the second rotating frame; One end of the support rod is fixedly connected to the first rotating frame, and the other end of the support rod is hinged to the material gantry; Wherein, the material gantry comprises a top frame, a lifting frame, a folding frame and a third hydraulic cylinder; the top frame is hinged to the support rod; the lifting frames are slidingly symmetrically arranged at both ends of the top frame; the folding frame is arranged at the lower end of the lifting frame, and the folding frame is hinged to the lifting frame; the third hydraulic cylinder is arranged inside the lifting frame and the folding frame, and the two ends of the third hydraulic cylinder are hinged to the lifting frame and the folding frame respectively; Wherein, the folding frame includes a bracket, a support and a fourth hydraulic cylinder; one end of the third hydraulic cylinder is hinged to the bracket; one end of the bracket is hinged to the lifting frame, and the other end of the bracket is provided with a fork; the two ends of the fork are respectively hinged to one of the supports; one end of the fourth hydraulic cylinder is hinged to the bracket, and the other end is respectively hinged to the inner ends of the two supports.

2. The material hoist according to claim 1, It is characterized in that The fourth hydraulic cylinder is arranged outside the folding frame.

3. The material hoist according to claim 1, It is characterized in that A slide rail is arranged below the top frame, and a winch is arranged on the slide rail.

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