CN201250040Y - Pitless wall-attached elevator - Google Patents

Abstract

The utility model discloses a pitless wall-attached elevator comprising a wall-attached hoistway, a machine case, a traction machine, two guide wheels, a car, counterweights, car buffers, counterweight buffers and the like. The wall-attached hoistway is fixedly embedded underground on a solid foundation, the top face of the solid foundation is lower than the building indoor floor and is equal to the outdoor floor, three top beams disposed at the top of the wall-attached hoistway in parallel support the machine case, a main beam is transversely positioned at the center of the upper end faces of the three top beams, the traction machine and the guide wheels are mounted on the main beam, the pair of car buffers is respectively mounted on the top face of the solid foundation which is correspondingly under two straight beams on two sides of the car and is close to wall boards of the wall-attached hoistway, buffer striking plates corresponding to the car buffers are positioned at the lower ends of the two straight beams on two sides of the car, the counterweight buffers are mounted on the top face of the solid foundation close to the wall boards of the wall-attached hoistway and under the corresponding counterweights, and a buffer striking plate corresponding to the counterweight buffer is positioned at the lower end of the counterweight.

Description

Bottomless pit with wall elevator

technical field

The utility model relates to a wire rope traction type elevator, in particular to a bottomless pit-attached wall elevator that needs to be added outside the wall when an elevator is installed in an existing building.

Background technique

The wall-attached elevator is an elevator attached to the outer wall of a building. It does not occupy a building area. It is suitable for installing an elevator in an existing building without an elevator shaft. Of course, this kind of elevator can also be installed on a newly built house. The cost of the wall lift is low and can be promoted as an economical lift. Generally, the elevator is equipped with a pit, and the elevator pit is set up to ensure the safety of the personnel operating in the pit. The lower guide shoe is installed on the bottom of the elevator car, and the buffer is installed on the pit under the car and the counterweight. The main objects of the pit operation are buffers and lower guide shoes, followed by some weighing and sensing devices installed at the bottom of the car, and the pit needs to have drainage facilities. The wall-attached elevator is installed close to the wall of a multi-storey building. The original foundation of the building is relatively shallow, and there are often pipes and wires buried beside the wall. It is unrealistic to dig an elevator pit one or two meters deep. . In addition, the current wall-attached elevators use 2:1 transmission except for hydraulic transmission, using double-wound pulleys and double wire ropes, without a cabinet, crowded shafts, high rope speed, difficult to control noise and vibration, and the wrap angle of the traction sheave is in the middle Below 180 degrees. Therefore how to design the elevator attached to the wall as a bottomless elevator is a difficult problem to be solved urgently by people in the industry.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art and provide an economical, safe, practical and energy-saving bottomless pit wall-attached elevator, which can solve the contradiction between the bottom of the multi-storey residential wall-attached elevator and the building foundation, and at the same time It can simplify the traction drive and hoistway space, reduce the rope speed, reduce noise and vibration, increase the friction transmission capacity of the traction sheave, and reduce the cost.

The technical solution for achieving the above purpose is: a bottomless pit-attached wall elevator, including a wall-attached shaft, a chassis, a traction machine, two guide wheels, a car, a pair of weights, a set of wire ropes, a pair of car buffer, a pair of heavy buffers, a pair of lower guide shoes, a weighing device, a pair of safety gear, a two-way speed limiter and a toe guard, wherein the wall-attached shaft is fixed on a The surface is lower than the indoor floor of the building and is equivalent to the outdoor floor; the chassis is supported on three parallel roof beams on the top of the wall-attached shaft, and the upper end surfaces of the three roof beams are horizontally supported by a Main beam;

The traction machine and guide wheels are installed on the main girder; the pair of car buffers are respectively installed on the top surface of the solid foundation below the straight girders on both sides of the corresponding car and close to the wall plate of the well attached to the wall. The lower ends of the straight beams on both sides of the car respectively correspond to the position of the car buffer to install the buffer strike plate; The lower end of the corresponding counterweight buffer position installs a buffer strike plate.

In the above-mentioned bottomless pit-attached wall elevator, wherein, the pair of lower guide shoes are respectively arranged at the lower parts of the straight beams on both sides of the car and above the safety gear.

In the aforementioned bottomless pit-attached wall elevator, the weighing device is arranged under the end of the wire rope on the top of the car.

In the above-mentioned bottomless pit-attached wall elevator, a groove for accommodating the toe guard is provided on the top surface of the solid foundation below the corresponding toe guard.

In the above-mentioned bottomless pit wall-attached elevator, the first layer of wall panels at the bottom of the wall-attached shaft is detachably connected.

The above-mentioned bottomless pit-attached wall elevator, wherein, the traction machine and the two guide wheels are fixed side by side on the main girder and the traction machine is located on one side; The upper part of the guide wheel is fixedly connected with the car and the counterweight after winding to the lower part of the guide wheel, and the rope winding ratio is 1:1; the wrapping angle of the steel wire rope on the traction wheel is 200°-250°.

In the above-mentioned bottomless pit-attached wall elevator, wherein, the lower guide shoes, the safety gear and the bumper strike plate located on both sides of the car are respectively installed on an integrated board, and the integrated board is tightly connected to the chassis of the car and the straight beam. firmly connected together.

In the above-mentioned bottomless pit-attached elevator, the traction machine is provided with a safety brake and adopts a synchronous planetary transmission mode, and the safety brake circuit is connected to the contacts of the two-way speed governor.

Due to the adoption of the technical scheme of the utility model's bottomless pit-attached wall elevator, that is, no pit is provided at the bottom of the wall-attached shaft of the wall-attached elevator, and only one solid foundation is provided, and the buffer of the car is divided into two, and the moving The two sides of the car and the counterweight buffer are all close to the wall of the hoistway near the wall, the lower guide shoe is moved to the lower part of the straight beam, the weighing device is set under the end of the wire rope on the top of the car, and the toe guard A groove that can accommodate the board is provided in the foundation below, and the wall board near the bottom of the wall-attached shaft can be disassembled, so that maintenance operations can be completed outside the wall-attached shaft, thereby alleviating the contradiction between the bottom of the elevator and the building foundation. In addition, the traction machine and the pulley are installed side by side in the cabinet on the top of the hoistway, and the traction machine is on the side close to the wall, so that the wrap angle of the wire rope on the traction wheel reaches 200°-250°, thus greatly improving the safety of the wire rope. The anti-skid ability reduces the rope speed, reduces noise and vibration, increases the friction transmission capacity of the traction sheave, reduces the cost, and simplifies the transmission.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the bottomless pit wall-attached elevator of the present invention;

Fig. 2 is the bottom plan view of the wall-attached shaft of the bottomless pit-attached wall elevator of the utility model;

Figure 3a and Figure 3b are schematic diagrams of the installation of the car upper buffer, lower guide shoe, safety gear and integrated board of the bottomless pit wall-attached elevator of the present invention;

Fig. 4 is a schematic diagram of the installation of the guide wheel and the traction wheel of the bottomless pit wall-attached elevator of the present invention.

Detailed ways

In order to better understand the technical solution of the utility model, the following will be described in detail through specific embodiments in conjunction with the accompanying drawings:

Please refer to Fig. 1 to Fig. 4, the bottomless pit-attached wall elevator of the utility model is basically the same as the general elevator, and also consists of a traction system, a guide system, a door system, a car, a counterweight balance system, and an electric traction system. It is composed of dynamic system, automatic control system and safety protection system. The bottomless pit wall-attached elevator of the present utility model comprises a wall-attached shaft 1, a cabinet 10, a traction machine containing a traction wheel 2, two guide wheels 3, 3', a car 4, and a pair of weights (Fig. not shown in), a set of wire ropes 5, a pair of car buffers 6, a pair of heavy buffers 7, a pair of lower guide shoes 8, a weighing device (not shown in the figure), a pair of safety gear 9, a Two-way speed limiter (not shown in the figure) and a foot guard (not shown in the figure), wherein:

The wall-attached shaft 1 is fixed on a solid foundation 12 that is embedded in the ground and the top surface is lower than the indoor floor of the building 11 and is equivalent to the outdoor floor; the elevator shaft 1 is attached and installed on the outer wall of the building 11, and the elevator shaft 1 is an assembled light steel structure, and the hoistway 1 and the upper cabinet 10 are integrally installed, and the cross-sectional dimensions are the same. The steel structure is covered with a layer of high-strength cement board. The hoistway 1 is provided with mechanical and electrical parts such as car guide rails and counterweight guide rails. A series of landing doors are arranged on one side of the wall.

The cabinet 10 is supported on three parallel roof beams 13 on the top of the wall-attached shaft 1 , and a main beam 14 is laterally supported in the middle of the upper end surfaces of the three roof beams 13 .

Traction wheel 2 and guide wheel 3,3 ' are located on the main beam 14; Three are fixed on the main beam 14 side by side and traction wheel 2 is positioned at a side.

The traction machine has a safety brake and adopts synchronous planetary transmission; the safety brake circuit is connected with the contacts of the two-way speed limiter.

The two ends of the steel wire rope 5 come out from the traction sheave 2 and are respectively introduced above the two guide pulleys 3, 3', go around to the bottom of the guide pulleys 3, 3' and then are fixedly connected with the car 4 and the counterweight respectively; The wrap angle α on the pulley 2 is 200°-250°. When the elevator works, under the drive of the traction machine, the car 4 and the counterweight run up and down along the guide rails of the wall-attached shaft 1 respectively. The speed ratio of wire rope 5 and car 4 is 1:1.

A pair of car buffers 6 are respectively installed on the top surface of the solid foundation 12 below the straight beams 40 on both sides of the corresponding car 4 and close to the wall plate of the wall-attached shaft 1. The lower ends of the straight beams 40 on both sides of the car correspond to the car buffer respectively. The device 6 is equipped with a buffer strike plate 60.

The counterweight buffer 7 is installed on the solid foundation 12 top surface of the corresponding counterweight below and close to the wall plate of the wall-attached shaft 1, and a buffer strike plate (not shown) is installed corresponding to the counterweight buffer 7 at the lower end of the counterweight.

Weighing device is located under the termination of the wire rope 5 of car 4 tops.

On the top surface of the solid foundation 12, a groove (not shown) for accommodating the toe guard is provided under the corresponding toe guard. The height of the toe guard of car 4 can be correspondingly reduced according to the elevator speed, and its principle is to guarantee the required perception reaction time of the full contact of the toe guard.

A pair of lower guide shoes 8 are located at the bottom of the straight beams 40 on both sides of the car and above the safety gear 9 .

The lower guide shoes 8 on both sides of the car, the safety gear 9 and the buffer bumper 60 of the car are respectively installed on an integrated board 42, and the integrated board 42 is fastened with the chassis 41 and the straight beam 40 of the car 4 with bolts join together.

Attach wall shaft 1 to be detachably connected between the wall plate 14 near the bottom and the derrick. The car buffer 6 and the counterweight buffer 7 are small cylindrical solid rubber and plastic bodies, which do not require maintenance. In case maintenance is required, the wall plate 14 near the bottom of the wall-attached shaft 1 can be opened, and it can be operated by reaching out from the outside . After the cement wall plate 14 at the bottom of the well with the wall is removed, the buffers 6 and 7 on the bottom of the well, the car guide rail base 15, the counterweight guide rail base 16, the safety gear 9 at the bottom of the car 4, the lower guide shoe 8, the car Parts such as the buffer bumper 60 of compartment 4 and the buffer bumper of counterweight are clear at a glance, and can be easily and safely maintained from outside the well, thus can replace all functions of the elevator pit.

The height of the indoor floor and the outdoor floor on the ground floor of building 11 is different. For the most common double-run stairwell, the outdoor floor should be at least 30 to 50 centimeters lower than the indoor floor. The height difference between the solid foundation 12 plane of the wall elevator and the floor surface of the ground floor becomes the installation space for the bottom thickness of the car and the buffer. For the wall-attached shaft 1, there is no bottom pit, which is the bottomless pit of the wall-attached elevator Design rationale.

In addition, the synchronous planetary transmission adopted by the main engine of this elevator is a power splitting mechanism. It is impossible for multiple gears to shave their heads at the same time. The strength safety factors of their splines, shafts and discs are all above 2.5. The transmission link between 2 is reliable. The left and right brake discs of the traction machine 2 are two safety brakes with independent coils and independent friction parts. In addition, the kinetic energy of the low-speed light-loaded car is more than ten times smaller than that of the high-speed heavy-loaded car. Therefore, the brake of the synchronous planetary drive traction machine used for the wall-attached elevator is the same as the brake of the gearless traction machine, and can also be regarded as an upward overspeed protection element without additional mechanical protection devices.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the utility model, rather than as a limitation to the utility model, as long as within the spirit of the utility model, the above-mentioned The changes and modifications of the embodiments will all fall within the scope of the claims of the present utility model.

Claims (8)

1. A bottomless pit-attached wall elevator, comprising a wall-attached shaft, a cabinet, a traction machine, two guide wheels, a car, a pair of weights, a group of steel wire ropes, a pair of car buffers, and a pair of weights A buffer, a pair of lower guide shoes, a weighing device, a pair of safety gear, a two-way speed limiter and a toe guard are characterized in that, The wall-attached shaft is fixed on a solid foundation that is buried underground and whose top surface is lower than the indoor floor of the building and equivalent to the outdoor floor; The chassis is supported on three parallel top beams on the top of the wall-attached shaft, and a main beam is laterally supported in the middle of the upper end surfaces of the three top beams; The traction machine and guide wheels are installed on the main beam; The pair of car buffers are respectively installed on the top surface of the solid foundation below the straight beams on both sides of the corresponding car and close to the wall plate of the hoistway with the wall, and the lower ends of the straight beams on both sides of the car correspond to the positions of the car buffers respectively. Install the bumper strike plate; The counterweight buffer is installed on the top surface of the solid foundation below the corresponding counterweight and close to the wall plate of the well attached to the wall, and a buffer strike plate is installed at the lower end of the counterweight corresponding to the position of the counterweight buffer. 2. The bottomless pit wall-attached elevator according to claim 1, characterized in that the pair of lower guide shoes are respectively arranged at the lower part of the straight beams on both sides of the car and above the safety gear. 3. The bottomless pit wall-attached elevator according to claim 1, characterized in that the weighing device is arranged under the end of the wire rope on the top of the car. 4. The elevator with a wall attached to a bottomless pit according to claim 1, characterized in that a groove for accommodating the toe guard is provided on the top surface of the solid foundation below the corresponding toe guard. 5. The elevator with a wall attached to a bottomless pit according to claim 1, characterized in that, the first layer of wall panels at the bottom of the hoistway with a wall attached is detachably connected. 6. The bottomless pit-attached wall elevator according to claim 1, characterized in that: The traction machine and the two guide wheels are fixed side by side on the main beam and the traction machine is located on one side; The two ends of the steel wire rope come out from the traction sheave, respectively lead them to the top of the two guide wheels, wrap around to the bottom of the guide wheels, and then respectively connect with the car and the counterweight, and the rope winding ratio is 1:1; The wrapping angle of the steel wire rope on the traction sheave is 200°-250°. 7. The bottomless pit wall-attached elevator according to claim 1, characterized in that, the lower guide shoes, the safety gear and the bumper strike plate located on both sides of the car are respectively installed on an integrated board, and the integrated board It is fastened together with the chassis of the car and the straight beam. 8. The bottomless pit wall-attached elevator according to claim 1, characterized in that the traction machine has a safety brake and adopts a synchronous planetary transmission mode, and the contacts of the safety brake circuit and the two-way speed limiter connect.

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