Lower chassis assembly of double-chassis elevator

Abstract

The lower chassis assembly of the double-chassis elevator comprises side beams with grooves in the inner sides and cross beams with the ends extending into the grooves to be fixedly connected, the cross beams and the side beams are combined to form a four-side frame structure on the same layer, and the end faces of the cross beams are attached to and fixedly connected with the inner side faces of the side beams. The ends of the cross beams extend into the side beams to be fixedly connected, the cross beams and the side beams are located on the same layer, the lower chassis is only as high as the side beams, the cross beams do not occupy extra height space, and therefore the lower chassis assembly occupies little height space. The cross beams are inserted into the grooves of the side beams to be directly welded and fixed, the ends of the cross beams do not need to be sealed and fixed through sealing plates, and the manufacturing cost is lower. The elevator with the lower chassis occupying small height space has lower requirements on the depth of the existing foundation pit, and the shallow foundation pit does not need to be excavated and deepened again, so that the time, manpower and money cost is saved.

Description

Technical Field

[0001] The utility model relates to elevator chassis technology, in particular to a lower chassis component of a double-chassis elevator. Background Art

[0002] Traditional elevators are double chassis elevators, including an upper chassis and a lower chassis. Figure 1 , Figure 2 As shown, the lower chassis adopts a layered arrangement structure of side beams 12 and bottom beams 19 welded parts. This lower chassis arrangement structure occupies more pit space in the height direction (the thickness of the lower chassis is about 210mm) due to the upper and lower layered arrangement. More pit space is required under the same working conditions, and in some cases it will affect the pit refuge space (GB7588, pit refuge space 500mm×600mm×1000mm). For many built shaft pits (such as installing elevators, etc.), or when the pit does not meet the depth requirements, the pit needs to be dug, backfilled, and waterproofed, which requires extremely high time, manpower, and money costs. In addition, the existing elevator lower chassis component structure requires more materials, two side beams 12, two bottom beams 19, and four sealing plates 16. The four sealing plates need to be welded and fixed to the side beams and bottom beams respectively, which increases the number of processes, materials, and production costs. Summary of the invention

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a lower chassis assembly of a double chassis elevator which occupies less height space and has low manufacturing cost.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a lower chassis assembly of a double-chassis elevator, which includes a side beam with a groove on the inner side, and a cross beam with an end extending into the groove and fixedly connected, the cross beam and the side beam are combined to form a four-sided frame structure on the same layer, and the end face of the cross beam is affixed to and fixedly connected to the inner side face of the side beam.

[0005] As an improvement of the technical solution of the lower chassis assembly of the double-chassis elevator of the utility model, the side beam includes a groove-shaped beam body and an L-shaped inner buckle edge integrally connected to the upper edge of the groove-shaped beam body. The beam body and the inner buckle edge form a semi-grooved structure and have a lateral inner turn-over edge facing inward.

[0006] As an improvement of the technical solution of the lower chassis assembly of the double chassis elevator of the utility model, the cross beam is a flat beam with its end inserted into the lower half of the half-groove of the side beam, and the inner turn-down edge presses the upper side of the flat beam.

[0007] As an improvement of the technical solution of the lower chassis assembly of the double-chassis elevator of the utility model, the upper side surface of the crossbeam is a wide surface.

[0008] As an improvement of the technical solution of the lower chassis assembly of the double-chassis elevator of the utility model, the crossbeam is a rectangular steel pipe or a rectangular channel steel.

[0009] The beneficial effect of the utility model is that the lower chassis assembly of the existing double chassis elevator includes side beams and bottom beams arranged in two layers, and the layered arrangement makes the height space occupied by the device larger. The end of the crossbeam of the utility model extends into the side beam and is fixedly connected. The crossbeam and the side beam are on the same layer. The height of the lower chassis is only the height of the side beam. The crossbeam does not occupy additional height space, so that the height space occupied by the lower chassis assembly is small; the crossbeam is inserted into the groove of the side beam and directly welded and fixed, and there is no need to use a sealing plate to close and fix the end of the crossbeam, and the production cost is lower. Elevators that occupy less height space of the lower chassis have lower requirements for the depth of the existing foundation pit, and there is no need to re-dig and deepen a very shallow foundation pit, thereby saving time, manpower, and money costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the lower chassis assembly of an existing double-chassis elevator.

[0011] Figure 2 for Figure 1 A schematic diagram of the forward structure of the lower chassis assembly is shown.

[0012] Figure 3 It is a three-dimensional structural schematic diagram of the lower chassis assembly of the double-chassis elevator of the utility model.

[0013] Figure 4 for Figure 3 A schematic diagram of the top view of the lower chassis assembly is shown.

[0014] Figure 5 for Figure 3 A schematic diagram of the forward structure of the lower chassis assembly is shown.

[0015] Figure 6 for Figure 3 A schematic diagram of the side structure of the lower chassis assembly is shown.

[0016] Figure 7 To include Figure 6 A schematic diagram of the lateral structure of the double chassis structure of the lower chassis assembly is shown. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0018] like Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the utility model is a lower chassis assembly of a double chassis elevator, which includes a side beam 21 with a groove on the inner side, and a cross beam 22 whose end extends into the groove and is fixedly connected. The cross beam 22 and the side beam 21 are combined to form a four-sided frame structure on the same layer, and the end surface of the cross beam 22 is attached to and fixedly connected to the inner surface of the side beam 21. The end of the cross beam 22 extends into the side beam 21 and is fixedly connected. The cross beam 22 and the side beam 21 are on the same layer, and the height of the lower chassis is only the height of the side beam 21, and the cross beam 22 does not occupy additional height space. Figure 5 , Figure 6 , Figure 7 As shown, the height space occupied by the lower chassis assembly is small; the cross beam 22 is inserted into the groove of the side beam 21 and directly welded and fixed, and there is no need to use a sealing plate to seal and fix the ends of the cross beam 22, which reduces the manufacturing cost. The elevator with a small height space occupied by the lower chassis has a lower requirement for the depth of the existing foundation pit, and there is no need to re-dig and deepen a very shallow foundation pit, thereby saving time, manpower, and money costs.

[0019] The side beam 21 includes a groove beam body 23 and an L-shaped inner buckle edge 25 integrally connected to the upper edge of the groove beam body 23. The beam body 23 and the inner buckle edge 25 are integrally formed to make the structural strength greater; the beam body 23 and the inner buckle edge 25 form a semi-slot structure to facilitate the insertion of the cross beam 22 from the slotted opening to form an adaptive fixed connection structure. After the cross beam 22 is inserted, its end is sealed by the inner side of the side beam 21, and no additional sealing plate is required. The inner buckle edge 25 also has a lateral inner flange 26 facing inward. The inner flange 26 is the horizontal part of the L-shaped inner buckle edge 25. The L-shaped structure of the inner buckle edge 25 plays a role of strengthening and supporting. The inner flange 26 is pressed on the cross beam 22, and the cross beam 22 plays a role of supporting the inner flange 26, so that it forms a more stable supporting connection structure with great structural strength. The inner flange 26 refers to the inner side of the lower chassis frame body, and for the side beam 21 itself, it is an outer flange extending toward the outer side of the beam body 23.

[0020] The cross beam 22 is a flat beam with its end inserted into the lower half of the half-groove of the side beam 21, and the inner flange 26 presses the upper side of the flat beam. The thin thickness of the flat beam makes the height dimension of the lower chassis smaller. Under the same strength requirement, the height of the entire lower chassis can be lower, thereby reducing the probability of re-excavation of the foundation pit and reducing the cost of installing the elevator.

[0021] Furthermore, the upper side surface of the cross beam 22 is a wide surface, so as to have more supporting contact surfaces, greater contact supporting strength, and a more stable structure.

[0022] The crossbeam 22 is a rectangular steel tube or a rectangular channel steel. The rectangular steel tube has greater strength and better sealing performance, while the channel steel has the notch facing downward to avoid water accumulation and is lighter.

[0023] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A lower chassis assembly of a double chassis elevator, characterized in that: It comprises a side beam with a groove on the inner side and a cross beam with an end extending into the groove and fixedly connected. The cross beam and the side beam are combined to form a four-sided frame structure of the same layer. The end face of the cross beam is attached to and fixedly connected with the inner side face of the side beam.

2. The lower chassis assembly of a double chassis elevator according to claim 1, characterized in that: The side beam comprises a groove beam body and an L-shaped inner buckle edge integrally connected to the upper edge of the groove beam body. The beam body and the inner buckle edge form a semi-grooved structure and have a transverse inner turn-over edge facing inward.

3. The lower chassis assembly of the double chassis elevator according to claim 2, characterized in that: The cross beam is a flat beam with its end inserted into the lower half of the half-groove of the side beam, and the inner folded edge presses the upper side surface of the flat beam.

4. The lower chassis assembly of a double chassis elevator according to claim 3, characterized in that: The upper side surface of the cross beam is a wide surface.

5. The lower chassis assembly of a double chassis elevator according to claim 3, characterized in that: The cross beam is a rectangular steel pipe or a rectangular channel steel.

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