A bottomless pit elevator

Abstract

The present invention proposes a pitless elevator, which relates to the technical field of elevator equipment. The present invention adopts a technical solution including a car body and a buffer structure, wherein a first main beam is obliquely arranged at the bottom of the car body, and impact structures are also arranged on both outer side walls of the car, the impact structures are connected to both ends of the first main beam, and the buffer structure is installed on the base of the elevator shaft. The impact structure and the buffer structure are arranged correspondingly, which has the beneficial effects of easy installation, small space occupation and relatively safe maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and in particular to a bottomless pit elevator. Background Art

[0002] With the strengthening of national strength and the improvement of people's living standards, the elevator industry has developed rapidly. On the one hand, the development of the real estate industry has greatly driven the development of the elevator industry. On the other hand, with the increase in elevator production capacity, the market selection has also broadened. In order to meet the needs of the market and users, various new technologies have emerged in an endless stream. Technologies such as machine room-less elevators, villa elevators, and pit-less elevators have improved market compatibility, lowered the threshold for elevator use, and greatly promoted the development and popularization of elevators.

[0003] At present, there is a strong market potential for installing elevators in old buildings. However, at present, the installation of elevators in old buildings has a high penetration rate only in economically developed first- and second-tier cities, and it is still difficult to popularize in some small and medium-sized cities. The main reasons are: traditional elevators are more troublesome to install in old buildings, and it is necessary to dig a pit for elevator buffer, which will occupy more space on the ground floor of the old building. The installation of elevators is more cumbersome, and there are certain safety hazards when elevator maintenance personnel are inspecting and repairing. Therefore, the existing technology needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a pitless elevator, which can provide corresponding solutions to the above-mentioned problems and has the beneficial effects of easy installation, small space occupation and relatively safe maintenance.

[0005] The embodiment of the present invention is achieved as follows:

[0006] An embodiment of the present application provides a pitless elevator, which includes a car body and a buffer structure. A first main beam is obliquely arranged at the bottom of the car body, and two corresponding outer walls of the car body are provided with impact structures, which are connected to both ends of the first main beam. The buffer structure is installed on the base layer of the elevator shaft, and the impact structure and the buffer structure are arranged correspondingly.

[0007] In some embodiments of the present invention, the first main beam and the center line of the car bottom have an inclination angle, and the inclination angle ranges from 30° to 60°.

[0008] The inclination angle ranges from 30° to 60°, which can make the two ends of the first main beam avoid the pillars of the car body. At the same time, the impact structure is connected to the two ends of the first main beam, so that the buffer structure corresponds to the two ends of the first main beam. In addition, the inclination angle is within the range of 30° to 60°, which can make the two ends of the first main beam closer to the two side walls of the car body, and the distance between the two buffer structures is also closer, so the installation space occupied by this product can be smaller.

[0009] In some embodiments of the present invention, the first main beam is an arched beam, and the vertex of the arched beam is connected to the center of gravity of the bottom of the car body.

[0010] The arched beam is arched toward the bottom of the car, and its highest point is fixedly connected to the center of gravity of the bottom of the car body, which can improve the load-bearing stability of the car body, prevent uneven force on the car body, and make the lifting and lowering of the car body more stable.

[0011] In some embodiments of the present invention, a buffer is provided at the gap between the bottom of the car body and the arched beam.

[0012] The buffer fills the gap between the arched beam and the bottom of the car body, making the arched beam similar to a "pole" have a longer service life. When the car body descends, the buffer can weaken the vibration of the car body to a greater extent, thereby improving the passengers' elevator riding experience.

[0013] In some embodiments of the present invention, a counterweight assembly is further included, wherein the counterweight assembly includes a counterweight frame installed in the hoistway and a counterweight buffer installed on the base layer of the hoistway, a plurality of counterweight blocks are installed in the frame of the counterweight frame, a counterweight return pulley is installed on the top of the counterweight frame, and the counterweight return pulley is connected to the car body through a traction machine.

[0014] The counterweight block is installed in the counterweight frame. Guide shoes are installed on both sides of the counterweight frame. The guide shoes are slidingly connected to the counterweight guide rails installed in the hoistway. The counterweight block has a large weight. As the car body rises and falls, it can balance the car body, making the lifting of the car body more stable.

[0015] In some embodiments of the present invention, a receiving cavity corresponding to the counterweight buffer is further provided in the counterweight frame, and an anti-collision member is provided on the top of the receiving cavity.

[0016] When the car body rises, the counterweight buffer gradually approaches the accommodating cavity and extends into the accommodating cavity. When the car body rises and exceeds the travel distance, the top of the accommodating cavity collides with the counterweight buffer to prevent the car body from further exceeding the travel distance.

[0017] In some embodiments of the present invention, the impact structure includes an impact member, which is disposed on two outer side walls of the car body, and the impact member corresponds to the buffer structure.

[0018] When the car body descends, the impact member collides with the buffer structure, causing the car body to stop smoothly.

[0019] In some embodiments of the present invention, the buffer structure includes an elevator buffer, which is arranged at the base layer of the elevator shaft and corresponds to the accommodating cavity.

[0020] The elevator buffer eventually contacts the impact members on both sides of the car body, and through its own buffering effect, the parking of the car body is made more stable.

[0021] In some embodiments of the present invention, the outer side wall of the above-mentioned car body is provided with a connecting plate, one end of the connecting plate is connected to the impact piece, and the other end is connected to the first main beam, and reinforcing ribs are provided at the connection between the connecting plate, the first main beam and the impact piece.

[0022] The connection plate is arranged behind the side wall of the car body, so that the connection between the first main beam, the impact piece and the car body is more stable; the arrangement of the reinforcing ribs can reduce the stress concentration at the connection between the first main beam, the impact piece and the connection plate.

[0023] In some embodiments of the present invention, a toe guard and a guide rail installed on the base of the shaft are also included, the toe guard includes a first guide plate and a second guide plate hinged to each other, the first guide plate is connected to the car, the second guide plate is provided with a guide wheel adapted to the guide rail, and the second guide plate is connected to the bottom of the car with a spring for resetting.

[0024] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0025] An embodiment of the present invention includes a car body and a buffer structure, the car body is slidably connected to the guide rail in the elevator shaft, and the interior of the car body is used to carry passengers up and down; a first main beam is obliquely arranged at the bottom of the car body, and the first main beam is used to bear the weight of the car body; two corresponding outer walls of the car body are also provided with an impact structure, and the impact structure is connected to the two ends of the first main beam. The impact structure and the first main beam are connected to form an integrated structure, which raises the impact force point of the car body so that the impact force point of the car body is located on both sides of the car body; the buffer structure is installed on the horizontal plane of the base layer of the elevator shaft, and the impact structure and the buffer structure are arranged correspondingly, so there is no need to dig a pit below the base layer, and no additional space will be occupied. When the car body descends to the lowest layer, its bottom plane is basically level with the plane where the base layer is located, so that the present invention The installation of the product is more convenient. Compared with the elevators in the prior art, maintenance personnel do not need to be in a deeper pit for inspection and maintenance during maintenance, which reduces safety hazards. When the car body hits the buffer, the impact structure contacts the buffer structure, and the impact is completed at a position above the base layer, and the impact force of the car body is offset by the buffer structure. Because the buffer structure is installed on the base surface of the well, and the impact structure is arranged on both sides of the car body, the force point of the car body is increased, which changes the disadvantage of the force at the bottom of the traditional elevator, and the car body is more stable when it is parked, and the ride is more comfortable. Compared with the elevators in the prior art, the force points of the car body in the embodiment of the present invention are located on both sides of it, so only a shallow pit body or a basically bottomless pit needs to be reserved at the bottom of the well, thereby realizing the technical characteristics of a bottomless pit and only occupying a small space. Therefore, the embodiment of the present invention has the beneficial effects of convenient installation, small space occupation and relatively safe maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 Schematic diagram of a car body according to an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the connection between the arched beam and the car body provided in an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a counterweight assembly provided in an embodiment of the present invention;

[0030] Figure 4 A top view of a counterweight assembly provided for an embodiment of the present invention;

[0031] Figure 5 A simplified three-dimensional diagram of a counterweight assembly according to an embodiment of the present invention (the counterweight block is not shown);

[0032] Figure 6 A schematic diagram of the operation of a pitless elevator is provided for an embodiment of the present invention;

[0033] Figure 7 A schematic diagram of installing a toe guard provided in an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of a folded state of a toe guard provided in an embodiment of the present invention.

[0035] Icons: 100-car body, 110-first main beam, 111-tilt angle, 120-impact structure, 122-impact member, 130-connecting plate, 140-reinforcement rib, 160-column, 200-buffer structure, 310-buffer member, 410-stabilizing member, 510-counterweight assembly, 511-counterweight frame, 512-counterweight anti-rope pulley, 513-counterweight block, 514-second main beam, 515-accommodating chamber, 516-anti-collision member, 517-counterweight buffer, 610-base layer, 710-guide shoe, 810-traction machine, 910-foot guard plate, 911-first guide plate, 912-second guide plate, 913-guide wheel, 920-guide rail, 930-spring. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the embodiments of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when used. It 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0041] In the description of the embodiments of the present invention, "plurality" means at least 2.

[0042] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Example

[0044] Please refer to Figures 1 to 8, as shown in the figure, this embodiment provides a pitless elevator, which includes a car body 100 and a buffer structure 200. The car body 100 is slidably connected to the elevator guide rails in the elevator shaft. The interior of the car body 100 is used to carry passengers up and down. It should be noted that the power source of the car body 100 is the traction machine 810 (existing technology); a first main beam 110 is obliquely arranged at the bottom of the car body 100, and the first main beam 110 is connected to the center of gravity of the bottom of the car body 100 to withstand the impact energy of the car body 100 in the extreme state; the left and right side walls of the car body 100 are provided with impact structures 120, which correspond to the buffer structure 200, and the descent buffering of the car body 100 is completed by colliding with the buffer structure 200. The impact structure 120 is connected to both ends of the first main beam 110, and the impact structure The structure 120 is connected to the first main beam 110 to form an integrated structure, which raises the impact force point of the car body 100 so that the impact force points of the car body 100 are located on both sides of the car body 100; the buffer structure 200 is installed on the horizontal plane of the elevator shaft base layer 610, which is convenient for the staff to directly install and the installation is relatively simple; the impact structure 120 and the buffer structure 200 are arranged correspondingly, so there is no need to dig a pit below the base layer 610, and no additional space will be occupied. When the car body 100 descends to the lowest layer, its bottom plane is basically level with the plane of the base layer 610, so that the installation of this product is more convenient. Compared with the elevators in the prior art, there is no need to reserve a pit or only a shallow pit needs to be reserved, so that maintenance personnel do not need to be in a deeper pit for inspection and maintenance during inspection, thereby reducing safety hazards.

[0045] When the car body 100 is lowered for buffering, the impact structure 120 contacts the buffer structure 200, and the impact is completed at a position above the base layer 610. The impact force of the car body 100 is offset by the buffer structure 200, so that the descent of the car body 100 is more stable; because the buffer structure 200 is installed on the base layer 610 surface of the shaft, and the impact structure 120 is arranged on both sides of the car body 100, the impact force point of the car body 100 is increased, and the force characteristics of the bottom of the traditional elevator are changed, and the car body 100 is more stable when it stops, and the passengers are more comfortable when riding; relative to the elevator in the prior art, the force points of the car body 100 in the embodiment of the present invention are located on its two outer sides, so only a shallow pit body or a basically bottomless pit needs to be reserved at the bottom of the shaft, thereby realizing the technical characteristics of the bottomless pit, and only a small space needs to be occupied. Therefore, the embodiment of the present invention has the beneficial effects of easy installation, small space occupation and relatively safe maintenance.

[0046] In some embodiments of the present invention, the first main beam 110 has an inclination angle 111 with the center line of the bottom of the car, and the range of the inclination angle 111 is 30°~60°. The range of the inclination angle 111 is 30°~60°, which can make the two ends of the first main beam 110 avoid the pillars 160 of the car body 100 (located in the middle of the side of the car body 100, which is the prior art). At the same time, the impact structure 120 is connected to the left and right ends of the first main beam 110, so that the buffer structure 200 and the two ends of the first main beam 110 also correspond to each other. In addition, the inclination angle 111 is within the range of 30°~60°, which can make the two ends of the first main beam 110 closer to the two side walls of the car body 100. Correspondingly, since the buffer structure 200 and the impact structure 120 are arranged correspondingly, the distance between the two buffer structures 200 is also closer, so the installation space occupied by this product can be made smaller.

[0047] It should be noted that, in this embodiment, the inclination angle 111 is α, and α is selected to be 30°. In other embodiments, α may also be selected to be other angles.

[0048] In some embodiments of the present invention, the first main beam 110 is an arched beam, and the vertex of the arched beam is connected to the center of gravity of the bottom of the car body 100. Figure 2 As shown, the center position of the arched beam is arched toward the bottom of the car, and its highest point is fixedly connected to the center of gravity of the bottom of the car body 100. The specific connection method can be welding, which ensures that the arched beam is evenly stressed, can improve the load-bearing stability of the car body 100, and can also prevent the car body 100 from being unevenly stressed, making the lifting and lowering of the car body 100 more stable.

[0049] In some embodiments of the present invention, a buffer 310 is provided at the gap between the bottom of the car body 100 and the arched beam. Figure 2 As shown, the buffer 310 fills the gap between the arched beam and the bottom of the car body 100, which can reduce the compressive force on the arched beam and make the arched beam similar to a "pole" have a longer service life; when the car body 100 descends, the buffer 310 can weaken the vibration of the car body 100 to a greater extent, making the descent of the car body 100 more stable, thereby improving the passengers' elevator riding experience.

[0050] It should be noted that the buffer 310 may be a rubber gasket, which has good elasticity and ductility and can achieve a good shock-absorbing effect, so that the vibration generated when the car body 100 descends to the bottom layer is smaller, thereby improving the stability of the car body 100. In other embodiments, the buffer 310 may also be a foamed resin gasket, which can achieve a good shock-absorbing effect.

[0051] In some embodiments of the present invention, a counterweight assembly 510 is also included which is installed in the hoistway. The counterweight assembly 510 includes a counterweight frame 511 installed in the hoistway and a counterweight buffer 517 installed on the base of the hoistway. A plurality of counterweight blocks 513 are installed in the frame of the counterweight frame 511. A counterweight return pulley 512 is installed on the top of the counterweight frame 511. The counterweight return pulley 512 is connected to the car body 100 through the traction machine 810. Figure 3 As shown, the counterweight block 513 is installed in the counterweight frame 511, and multiple counterweight blocks 513 are vertically arranged from top to bottom in the counterweight frame 511; guide shoes 710 are installed on both sides of the counterweight frame 511, and the guide shoes 710 are slidably connected to the counterweight guide rails installed in the hoistway. One end of the traction machine 810 is connected to the top of the car body 100 through a cable, and the other end of the traction machine 810 is connected to the counterweight counter-ropes 512, so that the counterweight frame 511 can descend and rise as the car body 100 rises and descends; that is, when the car body 100 is raised or lowered, the counterweight block 513 can balance the car body 100, so that the lifting and lowering of the car body 100 is more stable.

[0052] It should be noted that the counterweight 513 can be a cement concrete counterweight 513 , which has a low cost and can provide a good balance to the car body 100 .

[0053] In some embodiments of the present invention, Figure 5 As shown, a receiving cavity 515 corresponding to the counterweight buffer 517 is further provided in the counterweight frame 511, and an anti-collision member 516 is provided on the top of the receiving cavity 515. When the car body 100 rises, the counterweight buffer 517 gradually approaches the receiving cavity 515 and extends into the receiving cavity 515. When the car body 100 rises and overtravels, the anti-collision member 516 on the top of the receiving cavity 515 collides with the counterweight buffer 517 to prevent the car body 100 from further overtraveling.

[0054] It should be noted that the counterweight buffer 517 can be a polyurethane buffer of model ZLA, which has a good buffering effect.

[0055] In some embodiments of the present invention, the impact structure 120 includes an impact member 122, which is horizontally disposed on two outer side walls of the car body 100, and the impact member 122 corresponds to the buffer structure 200. Figure 1As shown, the right end of the first main beam 110 is deflected upward, and the left end is deflected downward, so the impact member 122 located on the right side of the car body 100 is located on the right side of the vertical center line of the right side wall of the car body 100, corresponding to the buffer structure 200; the impact member 122 located on the left side of the car body 100 is located on the left side of the vertical center line of the left side wall of the car body 100. When the car body 100 descends, the impact member 122 gradually approaches the buffer structure 200, and finally collides with the impact member 122, completing the buffer parking of the car body 100.

[0056] In some embodiments of the present invention, the buffer structure 200 includes an elevator buffer, which is disposed on the base layer 610 of the elevator shaft and corresponds to the accommodating cavity 515. Figure 1 and Figure 6 As shown, there are two elevator buffers, which are respectively installed on the horizontal plane of the shaft base layer 610 on the left and right sides of the car body 100, corresponding to the setting positions of the two impact members 122. When the car body 100 descends vertically, the elevator buffer contacts the impact member 122. Through the buffering effect of the elevator buffer itself, the impact force when the car body 100 descends is offset, making the parking of the car body 100 more stable.

[0057] It should be noted that the elevator buffer can be a JHQ-C model buffer, which has good buffering effect, good impact resistance and pressure resistance, no noise, no sparks, and good explosion-proof performance during the buffering process. In other embodiments, other types of elevator buffers can also be selected as long as the effect of reducing the impact on the car body 100 is achieved.

[0058] In some embodiments of the present invention, the left and right side walls of the above-mentioned car body 100 are both provided with connecting plates 130, one end of the connecting plate 130 is connected to the impact piece 122, and the other end is connected to the first main beam 110, and reinforcing ribs 140 are provided at the connection between the connecting plate 130 and the first main beam 110 and the impact piece 122. The surface area of ​​the connecting plate 130 is relatively large, and the two connecting plates 130 are arranged behind the side walls of the car body 100, so that the connection between the first main beam 110, the impact piece 122 and the car body 100 is more stable; the arrangement of the reinforcing ribs 140 can reduce the stress concentration at the connection between the first main beam 110, the impact piece 122 and the connecting plate 130, and further improve the stability of the connection.

[0059] It should be noted that the counterweight frame 511 is provided with a second main beam 514 above the counterweight block 513, and the second main beam 514 abuts against the topmost counterweight block 513. The provision of the second main beam 514 can effectively prevent the counterweight block 513 from moving during the lifting process of the car body 100, so that the placement of the counterweight block 513 is more stable and will not affect the lifting stability of the car body 100.

[0060] It should be noted that the counterweight frame 511 is also provided with a stabilizing member 410 to prevent deformation. The two ends of the stabilizing member 410 support the two sides of the counterweight frame 511 respectively, and the structural strength of the stabilizing member 410 is greater than that of the counterweight frame 511, which can prevent the accommodating cavity 515 from squeezing the buffer structure 200, that is, the stabilizing member 410 can weaken the impact force generated when the impact member 122 collides with the buffer structure 200, and prevent the counterweight block 513 from squeezing the accommodating cavity 515 inward.

[0061] It should be noted that the stabilizing member 410 is an arc-shaped stabilizing member, and the arc-shaped protrusion faces the side away from the car body 100. When the car body 100 descends, it will not block the contact between the impact member 122 and the elevator buffer, and the design is reasonable.

[0062] In some embodiments of the present invention, Figure 7 and 8 As shown, it also includes a foot guard plate 910 and a guide rail 920 installed on the base layer of the shaft. The foot guard plate 910 includes a first guide plate 911 and a second guide plate 912 hinged to each other. The first guide plate 911 is connected to the car body 100, and the specific connection method can be selected by welding; the second guide plate 912 is provided with a guide wheel 913 adapted to the guide rail 920, and the guide wheel 913 can slide on the guide rail 920, and then as the car body 100 descends, the second guide plate 912 is gradually rotated and folded to the bottom of the car body 100; the second guide plate 912 is connected to the bottom of the car body 100 with a spring 930 for resetting. When the car body 100 rises, the spring 930 in a compressed state is reset, thereby pushing the second guide plate 912 to reset to a vertical state. The provision of the toe guard 910 can protect people's feet from shearing injuries caused by the elevator. When the car body 100 is not completely level, it prevents passengers' feet from getting stuck in the shaft when entering and exiting the car body 100, thereby causing injuries, further improving the safety of this product.

[0063] Working principle of the pitless elevator: the car body 100 rises and falls under the traction of the traction machine 810, and the elevator buffer is installed on the plane where the hoistway base layer 610 is located, and is arranged corresponding to the two ends of the first main beam 110 at the bottom of the car body 100. When the car body 100 descends, the accommodating chambers 515 on both sides gradually approach the elevator buffers, and finally the impact member 122 contacts the elevator buffer. Through the buffering effect of the elevator buffer itself, the impact force of the car body 100 when descending is offset, and the parking of the car body 100 is completed; when the car body 100 rises, the counterweight frame 511 descends, and the counterweight buffer 517 gradually approaches the accommodating chamber 515 and extends into the accommodating chamber 515. When the car body 100 rises and overtravels, the anti-collision member 516 on the top of the accommodating chamber 515 collides with the counterweight buffer 517 to prevent the car body 100 from further overtravel.

[0064] In summary, the embodiment of the present invention provides a pitless elevator, which includes a car body 100 and a buffer structure 200. The car body 100 is slidably connected to the guide rail in the elevator shaft. The interior of the car body 100 is used to carry passengers up and down. The bottom of the car body 100 is inclinedly provided with a first main beam 110 for bearing the impact energy of the car body 100 in an extreme state. The first main beam 110 is an arched beam, and the vertex of the arched beam is connected to the center of gravity of the bottom of the car body 100, which can improve the load stability of the car body 100. The two outer side walls of the car body 100 are also provided with a collision structure 120, which is connected to the two ends of the first main beam 110. The collision structure 120 and the first main beam 110 are connected to form an integrated structure, which raises the force point of the car body 100, so that the impact force point of the car body 100 is located on both sides of the car body 100; the buffer structure 200 includes an elevator buffer, which is arranged on the base layer 610 of the elevator shaft and corresponds to the collision structure 120, so there is no need to dig a pit below the base layer 610 , will not occupy additional space. When the car body 100 descends to the lowest level, its bottom plane is basically level with the plane where the base layer 610 is located, so that the installation of this product is more convenient. Compared with the elevator in the prior art, the maintenance personnel do not need to be in a deeper pit for inspection and maintenance during maintenance, which reduces the potential safety hazards. When the car body 100 descends for buffering, the impact member 122 contacts the elevator buffer and completes the impact at a position above the base layer 610, and the impact force of the car body 100 is offset by the elevator buffer. The buffer structure 200 is installed on the base layer 610 surface of the hoistway, and the impact member 122 is arranged on both sides of the car body 100 to increase the force point of the car body 100, which changes the force characteristics of the bottom of the traditional elevator, and is more stable when the car body 100 is parked, and the ride is more comfortable. Compared with the elevator in the prior art, the force points of the car body 100 in the embodiment of the present invention are located on both sides thereof, so only a shallow pit body or a basically bottomless pit needs to be reserved at the bottom of the hoistway, thereby realizing the technical characteristics of a bottomless pit, and only a small space needs to be occupied. Therefore, the embodiments of the present invention have the beneficial effects of easy installation, small space occupation and relatively safe maintenance.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pitless elevator, characterized in that: The elevator comprises a car body and a buffer structure, wherein a first main beam is obliquely arranged at the bottom of the car body, and two corresponding outer side walls of the car body are both provided with impact structures, and the impact structures are connected to both ends of the first main beam. The buffer structure is installed on the elevator shaft base, and the impact structure is arranged correspondingly to the buffer structure; The invention also comprises a counterweight assembly, wherein the counterweight assembly comprises a counterweight frame installed in the hoistway and a counterweight buffer installed on the base layer of the hoistway, a plurality of counterweight blocks are installed in the frame of the counterweight frame, a counterweight return rope pulley is installed on the top of the counterweight frame, and the counterweight return rope pulley is connected to the car body through a traction machine; a receiving cavity corresponding to the counterweight buffer is also provided in the counterweight frame, and an anti-collision member is provided on the top of the receiving cavity; the impact structure comprises an impact member, which is provided on the two outer side walls of the car body, and the impact member corresponds to the buffer structure; the buffer structure comprises an elevator buffer, which is provided on the base layer of the elevator hoistway and is connected to the elevator body. The impact piece corresponds to the impact piece; the outer side walls of the car body are provided with connecting plates, one end of the connecting plate is connected to the impact piece, and the other end is connected to the first main beam, and the connection between the connecting plate, the first main beam and the impact piece is provided with reinforcing ribs; the first main beam and the center line of the bottom of the car have an inclination angle, and the inclination angle ranges from 30° to 60°; it also includes a foot guard and a guide rail installed on the base layer of the shaft, the foot guard includes a first guide plate and a second guide plate hinged to each other, the first guide plate is connected to the car, the second guide plate is provided with a guide wheel adapted to the guide rail, and the second guide plate is connected to the bottom of the car with a spring for resetting.

2. The pitless elevator according to claim 1, characterized in that: The first main beam is an arched beam, and the vertex of the arched beam is connected to the center of gravity of the bottom of the car body.

3. The pitless elevator according to claim 2, characterized in that: A buffer is arranged at a gap between the bottom of the car body and the arched beam.

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