Novel counterweight frame device for heavy-load freight elevator

Abstract

A novel counterweight frame device for a heavy-load cargo elevator belongs to the technical field of elevators and consists of counterweight guide wheels, an upper frame, a middle upper frame, long side frames, short side frames, a lower frame, upper frame connecting pieces and rubber shock pads. And two ends of the four counterweight guides are provided with through holes and are welded and fixed on the long side frames through steel pipes to bear the lifting force of the steel wire ropes. The two ends of the square upper frame connecting piece are connected with the upper frame and the middle upper frame through hexagon bolts and hexagon nuts to form a whole. The square long side frames penetrate through the upper frame, the middle upper frame and the lower frame and are connected together through bolts to divide two rows of large counterweight mounting spaces, the two ends of the square short side frames penetrate through the middle upper frame and the lower frame and are connected through bolts, and each large counterweight mounting space is divided into three rows of small counterweight mounting spaces. According to the utility model, the problem that when the load of the cargo elevator is greater than 12 tons, the weight of a single counterweight block is greater and the elevator cannot run normally on the premise that the height of the counterweight frame is limited can be solved.

Description

Technical Field

[0001] The utility model relates to a counterweight frame device for a new large-load freight elevator, specifically, it realizes the transportation of elevators with a load above 12t by changing the structural form of the counterweight frame, and belongs to the technical field of elevator equipment. Background Technique

[0002] With the increasing development of elevator technology, the overall structure of elevators is becoming more and more complex. During the use of elevators, a counterweight device is required to guide the lifting of the elevator. Therefore, the requirements for elevator counterweight devices in the current market are becoming more and more strict.

[0003] The elevator counterweight device mainly consists of a counterweight frame, counterweight blocks, guide shoes, and buffer heads. Currently, the 8:1 load freight elevator mainly adopts a single-row counterweight frame device that can accommodate 4 columns of counterweight blocks and is composed of a counterweight guide wheel, an upper frame, 8 long side frames, and a lower frame as shown in the figure. Its advantages are that the required mass of the counterweight blocks is smaller, which not only saves materials but also facilitates installation, handling, and adjustment of the balance coefficient. At the same time, it can effectively prevent the counterweight blocks from moving due to their small mass. The disadvantage is that when the load tonnage of the freight elevator is larger, under the premise of limited height of the counterweight frame, the weight of a single counterweight block required is larger, and the elevator cannot operate normally. At the same time, the counterweight guide wheel in the market is directly connected to the upper frame. Due to the rigid connection, the vibration and noise during operation are relatively large. Therefore, the existing elevator counterweight frame device cannot meet the requirements of wide application in the market. Summary of the Invention

[0004] In view of the defects or deficiencies existing in the above-mentioned prior art, the utility model provides a counterweight frame device for a new large-load freight elevator, and the utility model is realized through the following technical solutions.

[0005] A counterweight frame device for a new large-load freight elevator includes a counterweight guide wheel, an upper frame, a middle-upper frame, long side frames, short side frames, a lower frame, an upper frame connecting piece, and rubber shock pads. Through holes are provided at both ends of the four counterweight guide wheels and are fixedly connected to a cylindrical guide rod through through holes at a certain distance on the counterweight wheel guard. Both ends of the cylindrical guide rod are connected to the long side frames. The square upper frame connecting piece is connected to the upper frame and the middle-upper frame at both ends respectively through hexagon bolts and their hexagon nuts to form an integral body. The two square long side frames are connected to each other in series through a section of the upper frame, the middle-upper frame, and the lower frame and are connected by bolts. The two ends of the square short side frames penetrate and connect the middle-upper frame and the lower frame and are connected by bolts. The circular rubber shock pads are installed at the connection points of the counterweight guide wheels connecting the guide rods.

[0006] Furthermore, through holes are provided at both ends of the counterweight guide wheels and are fixedly welded to a conduit through steel pipes, and the conduit is fixed on the long side frames.

[0007] Further, both ends of the upper frame connecting member are connected to the upper frame and the middle-upper frame through hex nuts and hex bolts to form an integral body, and a certain distance is maintained between every two upper frame connecting members.

[0008] Further, the long side frame penetrates through the square upper frame, the square middle-upper frame, and the square lower frame and is connected through hex bolts and their hex nuts.

[0009] Further, both ends of the square short side frame penetrate through and are connected to the middle-upper frame and the lower frame and are connected through bolts.

[0010] 1) The utility model can reduce the number of long side frames by adding the middle-upper frame, the upper frame connecting member, and the short side frame, so as to reduce consumables and solve the problems of current freight elevators with a load capacity of over 12 tons and a ratio of 8:1.

[0011] 3) The utility model installs rubber shock pads at the connection points of the counterweight guide wheel connecting rods, effectively reducing the vibration and noise generated by the rotation of the wheels and improving the comfort of the freight elevator car operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the utility model;

[0013] Figure 2 is a schematic structural diagram of the utility model;

[0014] In the figure, 1-counterweight guide wheel, 2-upper frame, 3-middle-upper frame, 4-long side frame, 5-short side frame, 6-lower frame, 7-upper frame connection, 8-rubber shock pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] As Figures 1 to 2 shown, a new type of large-tonnage freight elevator counterweight frame includes a counterweight guide wheel 1, an upper frame 2, a middle-upper frame 3, a long side frame 4, a short side frame 5, a lower frame 6, an upper frame connecting member 7, and a rubber shock pad 8. Further, as Figure 1 shown, through holes are provided at both ends of the four counterweight guide wheels 1 and are fixedly welded to the long side frame 4 through steel pipes to bear the wire rope pulling force. Further, as Figure 1 shown, the upper frame connecting member 7 is respectively connected to the upper frame 2 and the middle-upper frame 3 at both ends through hex bolts and hex nuts to form an integral body. Further, as Figure 1 shown, the long side frame 4 penetrates through the upper frame 2, the middle-upper frame 3, and the lower frame 6 and is connected together through hex bolts and hex nuts, separating out two large counterweight block installation spaces. Further, as Figure 1As shown, the two ends of the short side frame 2 pass through the upper frame 3 and the lower frame 6 and are connected by hexagonal bolts and hexagonal nuts, dividing the two large counterweight installation spaces into three rows of small counterweight installation spaces, thereby achieving a total of six rows of counterweight installation spaces, thereby solving the current problem of 8:1 freight elevators above 12 tons.

[0016] like Figure 1 The novel counterweight frame assembly for a heavy-duty freight elevator described herein comprises an upper middle frame, which is connected to two upper frame connectors via hexagonal bolts and nuts and mounted on the lower ends of the upper middle frame. Furthermore, the short side frames are symmetrically mounted on the lower ends of the upper middle frame, forming a single unit with the upper, lower, and upper middle frames. This reduces the number of long side frames and resolves the movement issue associated with a single-row counterweight frame assembly with four rows of counterweights due to its relatively low weight.

[0017] like Figure 1 The four circular rubber shock-absorbing pads shown are installed at the connection between the counterweight guide wheel and the guide rod, thereby effectively reducing the vibration and noise generated by the rotation of the wheel and improving the comfort of the freight elevator car operation.

Claims

1. A counterweight frame device for a new large-load freight elevator, which is composed of a counterweight guide wheel, an upper frame, a middle-upper frame, a long side frame, a short side frame, a lower frame, an upper frame connecting piece, and a rubber shock pad, and is characterized in that The upper end of the long side frame is connected to the square upper frame by hexagon bolts and hexagon nuts. The lower end of the long side frame is connected to the lower frame by bolts to form a counterweight frame. The upper end of the upper frame connecting piece is connected to the square upper frame by bolts, and the lower end of the upper frame connecting piece is connected to the middle upper frame by hexagon bolts and hexagon nuts to form an integral body, separating two rows of counterweight block installation spaces. Both ends of the four counterweight guide wheels are provided with through holes and are fixed to three long side frames and two short side frames by steel pipes welded thereto. Both ends of the four short side frames are connected to the middle upper frame and the lower frame by bolts, further separating the two counterweight blocks into six counterweight blocks.

2. The counterweight frame device for a new large-load freight elevator according to claim 1, characterized in that, The middle upper frame is connected to the two upper frame connecting pieces by hexagon bolts and hexagon nuts and is respectively installed at the lower end of the middle upper frame.

3. A counterweight frame device for a new large-load freight elevator according to claim 1, characterized in that, The short side frames are symmetrically installed at the lower end of the middle upper frame, and the rubber shock pads are installed at the connection points on the connecting rods of the counterweight guide wheels.

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