A double machine drive elevator

Abstract

The present application belongs to the field of elevator, and particularly relates to a double traction machine driven elevator, which comprises a car frame assembly, a counterweight frame assembly, a car assembly, a traction machine assembly and a traction steel wire rope, the car assembly is arranged in the car frame assembly, the traction machine assembly comprises a traction machine frame and two traction machines which are arranged on the traction machine frame oppositely, the traction steel wire rope is wound on the traction machine and driven by the traction machine, and two ends of the traction steel wire rope are connected to the car frame assembly and the counterweight frame assembly respectively. The present application adopts two traction machines, has larger load and can realize high-speed operation; the damping assembly of the present application has the functions of damping, preventing load deviation and promoting synchronization of the traction machines, and is versatile.

Description

Technical Field

[0001] This invention belongs to the field of elevators, and specifically relates to a dual traction machine driven elevator. Background Technology

[0002] Currently, permanent magnet synchronous gearless traction machines have become the mainstream traction machine product due to their advantages such as energy saving, environmental protection, simple and compact structure, and small size. When applied to elevators, the traction ratio is often 2:1 or 4:1. This is because permanent magnet synchronous gearless traction machines do not have an intermediate reduction gear, and therefore provide less torque compared to worm gear traction machines. When a traction ratio of 2:1, 4:1, or even larger cannot meet the elevator's needs and only provides a larger torque, the permanent magnet synchronous gearless traction machine must be designed to be larger, significantly increasing the design and manufacturing difficulty and cost.

[0003] Therefore, using a dual traction machine drive in elevators can effectively solve this problem, increase carrying capacity, and alleviate vertical transportation pressure. Dual traction machine drive elevator technology can be applied not only to heavy-duty freight elevators but also to high-speed and ultra-high-speed elevators, making its application scenarios very broad.

[0004] In addition, in existing technology, when the car is unevenly loaded, the safety clamp will rub against the guide rail, which poses a risk of malfunction of the safety clamp. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention provides a dual-traction machine driven elevator technology solution.

[0006] A dual-traction machine driven elevator, comprising:

[0007] Car frame assembly;

[0008] Counterweight components;

[0009] A car assembly, wherein the car assembly is disposed within a car frame assembly;

[0010] The traction machine assembly includes a traction machine frame and two traction machines arranged front and rear opposite each other on the traction machine frame; and

[0011] The traction wire rope is wound around the traction machine and driven by the traction machine, and its two ends are respectively connected to the car frame assembly and the counterweight frame assembly.

[0012] Furthermore, the car frame assembly includes a main car frame assembly, which includes a main car frame lower beam assembly, two main car frame straight beam assemblies disposed on the main car frame lower beam assembly, and a main car frame upper beam assembly disposed on the upper end of the two main car frame straight beam assemblies.

[0013] Furthermore, the main car frame upper beam assembly includes a main car frame upper beam body, on which a car top anti-cord pulley assembly is provided. The car top anti-cord pulley assembly includes a car top anti-cord pulley mounting frame, a wheel assembly installed in the car top anti-cord pulley mounting frame, and two sets of front and rear shock-absorbing assemblies. The anti-cord pulley mounting frame has shock-absorbing mounting parts on its front and rear sides. The shock-absorbing mounting parts are located at the lower end of the main car frame upper beam body. The two sets of front and rear shock-absorbing assemblies are respectively installed on the shock-absorbing mounting parts on the front and rear sides. The upper end of the shock-absorbing assemblies is connected to the main car frame upper beam body.

[0014] Furthermore, each set of damping components includes several damping components arranged in rows along the left and right direction. Each damping component includes a spring guide and a damping spring sleeved on the spring guide. The upper and lower ends of the spring guide are respectively connected to the main frame upper beam body and the damping mounting part. It is a telescopic structure that can extend and retract with the compression and extension of the damping spring.

[0015] Furthermore, two sets of car top anti-rope pulley assemblies are arranged on the left and right sides of the main car frame upper beam body.

[0016] Furthermore, safety clamps, sliding guide shoes, and support limiting components are provided on both the left and right sides of the main car frame assembly. The support limiting components are located adjacent to the safety clamps and are spring-loaded rod structures used to contact the guide rails when the elevator is eccentrically loaded.

[0017] Furthermore, the support and limiting components are arranged in pairs, with the two support and limiting components located on the front and rear sides of the guide rail, respectively.

[0018] Furthermore, the support limiting assembly includes a spring receiving tube, a guide rod that telescopically cooperates with the spring receiving tube, and a support spring disposed inside the spring receiving tube and abutting against the guide rod, wherein the guide rod is used to abut against the guide rail.

[0019] Furthermore, a car brake is provided on the left and / or right side of the main car frame assembly. The car brake includes two sets of electromagnetic braking assemblies, each of which is an electromagnetic telescopic rod structure. The two sets of electromagnetic braking assemblies together clamp the guide rail.

[0020] Furthermore, the car frame assembly also includes two sub-car frame assemblies, which are respectively connected to the front and rear sides of the main car frame assembly.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1) This invention uses two traction machines, which have a larger load capacity and can achieve high-speed operation;

[0023] 2) The shock absorption component of the present invention has the functions of shock absorption, anti-eccentric load and promoting synchronization of traction machine, and has multiple functions;

[0024] 3) The present invention provides a support and limiting component on the safety clamp fixing block and the sliding guide shoe, which effectively prevents the safety clamp from malfunctioning due to friction between the safety clamp and the guide rail when the car is unevenly loaded.

[0025] 4) The present invention is equipped with a car brake, which can avoid the problem of accidental car movement caused by the two traction machines being out of sync. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the traction machine assembly structure in this invention;

[0029] Figure 4 This is a schematic diagram of the connection structure between the car frame assembly and the car assembly in this invention;

[0030] Figure 5 This is a schematic diagram of the main car frame assembly structure in this invention;

[0031] Figure 6 This is a schematic diagram of the main car frame upper beam assembly structure in this invention;

[0032] Figure 7 This is a schematic diagram of the main car frame lower beam assembly structure in this invention;

[0033] Figure 8 This is a schematic diagram of the car roof anti-rope pulley assembly structure in this invention;

[0034] Figure 9 This is a schematic diagram of the connection structure between the shock-absorbing component and the shock-absorbing mounting part in this invention;

[0035] Figure 10 This is a schematic diagram of the connection structure between the sliding guide shoe and the support limiting component in this invention;

[0036] Figure 11 This is a schematic diagram of the connection structure between the safety clamp fixing block and the support limiting component in this invention;

[0037] Figure 12 This is a schematic diagram of the internal structure of the support and limiting component in this invention;

[0038] Figure 13 This is a schematic diagram of the connection structure between the brake base and the car brake in this invention;

[0039] Figure 14 This is a schematic diagram of the car brake connection structure in this invention;

[0040] Figure 15This is a schematic diagram of the electromagnetic braking component in this invention.

[0041] In the picture:

[0042] 1 represents the car frame assembly;

[0043] 100 is the main car frame assembly; 1000 is the main car frame lower beam body; 1001 is the main car frame straight beam assembly; 1002 is the main car frame upper beam body; 1003 is the car top anti-cord pulley assembly; 10030 is the car top anti-cord pulley mounting bracket; 100300 is the shock absorber mounting part; 10031 is the wheel assembly; 10032 is the shock absorber spring; 10033 is the shock absorber fixing part; 10034 is the shock absorber movable part; 1004 is the sliding guide shoe bracket; 1005 1006 is the shoe liner; 1006 is the support and limiting assembly; 10060 is the spring receiving tube; 10061 is the guide rod; 10062 is the support spring; 1007 is the safety clamp fixing block; 10070 is the fixing block mating groove; 1008 is the brake base; 1009 is the car brake; 10090 is the electromagnet base; 10091 is the brake spring receiving tube; 10092 is the brake guide rod; 10093 is the brake spring; 101 is the sub-car frame assembly;

[0044] 2 is the counterweight frame assembly;

[0045] 3 represents the traction machine components;

[0046] 300 is the traction machine frame; 301 is the traction machine; 302 is the counterweight side guide wheel; 303 is the car side guide wheel;

[0047] 4 is the traction steel wire rope;

[0048] 5 represents the car assembly;

[0049] 6 represents the guide rail. Implementation

[0050] In the description of this invention, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0051] The invention will now be further described with reference to the accompanying drawings.

[0052] Please see Figures 1-15A dual-traction-machine driven elevator includes a car frame assembly 1, a counterweight frame assembly 2, a car assembly 5, a traction machine assembly 3, and a traction steel wire rope 4. The car assembly 5 is disposed in the car frame assembly 1. The traction machine assembly 3 includes a traction machine frame 300 installed in the machine room and two traction machines 301 arranged front and rear opposite each other on the traction machine frame 300. The traction steel wire rope 4 is wound on the traction machine 301 and driven by the traction machine 301, and its two ends are respectively connected to the car frame assembly 1 and the counterweight frame assembly 2.

[0053] Continue reading Figure 3 The traction machine assembly 3 also includes a counterweight-side guide wheel 302 and a car-side guide wheel 303. The car-side guide wheel 303 is installed in the middle of the traction machine frame 300, and the counterweight-side guide wheel 302 is installed on the side of the traction machine frame 300 near the counterweight frame assembly 2. The two traction machines 301 are located between the counterweight-side guide wheel 302 and the car-side guide wheel 303. One end of the traction steel wire rope 4 passes around the counterweight-side guide wheel 302 and connects to the counterweight frame assembly 2. The other end first passes around the first car top anti-rope pulley assembly 1003 of the car frame assembly 1, then passes around the car-side guide wheel 303, then passes around the second car top anti-rope pulley assembly 1003 of the car frame assembly 1, and finally connects to the traction machine frame 300.

[0054] Continue reading Figure 4 The car frame assembly 1 includes a main car frame assembly 100 and two auxiliary car frame assemblies 101 respectively connected to the front and rear sides of the main car frame assembly 100. The main car frame assembly 100 and the auxiliary car frame assemblies 101 are connected by a crossbeam and a tie rod.

[0055] Continue reading Figure 5 The main car frame assembly 100 includes a main car frame lower beam assembly, two main car frame straight beam assemblies 1001 disposed on the main car frame lower beam assembly, and a main car frame upper beam assembly disposed on the upper end of the two main car frame straight beam assemblies 1001.

[0056] Continue reading Figure 6 and Figure 8The main car frame upper beam assembly includes two main car frame upper beam bodies 1002, one at the front and one at the rear. Two car roof anti-rope pulley assemblies 1003 are sandwiched between the two main car frame upper beam bodies 1002, positioned horizontally. Each car roof anti-rope pulley assembly 1003 includes a car roof anti-rope pulley mounting bracket 10030, wheel assemblies 10031 installed in the car roof anti-rope pulley mounting bracket 10030, and two sets of front and rear shock-absorbing assemblies. 30 is a cover structure used to install and cover the wheel assembly 10031. It has shock-absorbing mounting parts 100300 on the front and rear sides at the lower end. The shock-absorbing mounting parts 100300 protrude to the side and extend to the lower end of the main frame upper beam body 1002. The shock-absorbing mounting parts 100300 on the front and rear sides are connected to the corresponding main frame upper beam body 1002 through shock-absorbing components. That is, each car top anti-rope wheel mounting bracket 10030 has a set of shock-absorbing components at the front and rear.

[0057] Continue reading Figure 9 Each damping assembly includes several damping components arranged in rows along the left and right direction. The damping assembly includes a spring guide and a damping spring 10032 sleeved on the spring guide. The spring guide is a well-known technology in the field of dampers. Its upper and lower ends are respectively connected to the main frame upper beam body 1002 and the damping mounting part 100300. It is a telescopic structure that can extend and retract with the compression and extension of the damping spring 10032.

[0058] Specifically, the spring guide includes a shock-absorbing fixed part 10033 connected to the shock-absorbing mounting part 100300 and a shock-absorbing movable part 10034 connected to the main frame upper beam body 1002. The two are vertically telescopically slidably inserted into each other. The upper end of the shock-absorbing movable part 10034 has an annular limiting boss, and the upper end of the shock-absorbing spring 10032 abuts against the annular limiting boss.

[0059] It should be noted that the shock absorption components of the present invention can not only be used for shock absorption, but also alleviate the problem of front-to-back and left-to-right eccentric loads because shock absorption components are provided on both the left and right sides and the front and rear sides of the main frame upper beam assembly.

[0060] Furthermore, the shock-absorbing components on the front and rear sides of this invention correspond one-to-one with the two traction machines 301. Therefore, the shock-absorbing components can also solve the problem of asynchrony between the two traction machines 301. For example, when pulling the elevator upwards, if the front traction machine 301 starts faster than the rear traction machine 301, the elevator will experience an uneven load with the front higher than the rear. The function of the shock-absorbing components is to provide a certain buffer for the start-up of the traction machines 301, so that the front of the elevator will not rise immediately, but will be delayed for a certain period of time. In this way, the rear traction machine 301 can keep up with the front traction machine 301 and achieve synchronization.

[0061] Similarly, see further. Figure 6Safety clamp fixing blocks 1007 are installed on the upper ends of both sides of the two main car frame upper beam bodies 1002. Sliding guide shoes are installed on the upper ends of the safety clamp fixing blocks 1007. Support limiting components 1006 are installed on the front and rear of the safety clamp fixing blocks 1007 respectively. Support limiting components 1006 are also installed on the front and rear of the sliding guide shoes respectively. The two sets of support limiting components 1006 are located on the front and rear sides of the guide rail 6.

[0062] Continue reading Figure 7 The main car frame lower beam assembly includes two main car frame lower beam bodies 1000, one at the front and one at the rear. Safety clamps are installed on the lower sides of both ends of the two main car frame lower beam bodies 1000. Safety clamp fixing blocks 1007 are installed at the lower ends of the safety clamps. Brake bases 1008 are installed at the lower ends of the safety clamp fixing blocks 1007. Car brakes are installed on the brake bases 1008. Sliding guide shoes are installed at the lower ends of the brake bases 1008. Support limiting components 1006 are installed at the front and one at the rear of the safety clamp fixing blocks 1007. Support limiting components 1006 are also installed at the front and one at the rear of the sliding guide shoes. The two sets of support limiting components 1006 are located on the front and rear sides of the guide rail 6.

[0063] Continue reading Figure 10 The sliding guide shoe includes a sliding guide shoe bracket 1004, on which a shoe liner mounting groove corresponding to the guide rail 6 is provided, and a shoe liner 1005 is provided in the shoe liner mounting groove. Two support and limiting components 1006 are located on both sides of the shoe liner 1005.

[0064] Continue reading Figure 11 The safety clamp fixing block 1007 is used to install the safety clamp. The safety clamp fixing block 1007 is provided with a sliding groove corresponding to the guide rail 6 on the side facing the guide rail 6, and two support limiting components 1006 are located on both sides of the sliding groove.

[0065] Continue reading Figure 12 The support limiting assembly 1006 is a known spring-loaded rod structure, comprising a spring receiving tube 10060, a guide rod 10061, and a support spring 10062. Taking its connection with the safety clamp fixing block 1007 as an example, the spring receiving tube 10060 is installed on the safety clamp fixing block 1007, the guide rod 10061 is telescopically slidably inserted into the spring receiving tube 10060, and the support spring 10062 is disposed in the spring receiving tube 10060, with its two ends respectively connected to the guide rod 10061. 061 abuts against the spring receiving tube 10060. An annular boss is provided on the outer wall of the middle part of the guide rod 10061. The support spring 10062 abuts against the annular boss and engages with the shoulder of the hole on the spring receiving tube 10060 to prevent the guide rod 10061 from falling off. Under normal circumstances, the guide rod 10061 does not contact the guide rail 6. When the car frame assembly 1 is subjected to an off-center load, the guide rod 10061 abuts against the guide rail 6, which can prevent the safety clamp from rubbing against the guide rail 6 and thus prevent the safety clamp from malfunctioning.

[0066] It should be noted that the support and limiting component 1006 can be installed on the side of the main car frame component 100 near the safety clamp. It can be installed on any one or more of the safety clamp, the safety clamp fixing block 1007, and the sliding guide shoe.

[0067] Continue reading Figures 13-15 The car brake 1009 includes an electromagnet base 10090 and two electromagnetic brake assemblies. The electromagnet base 10090 has a U-shaped structure and is mounted on the brake base 1008. The two electromagnetic brake assemblies are respectively mounted on the inner walls of both sides of the electromagnet base 10090. Electromagnetic coils are installed on the corresponding parts of the electromagnet base 10090 and the electromagnetic brake assemblies. The electromagnetic brake assembly includes a brake spring receiving tube 10091, a brake guide rod 10092, and a brake spring 10093. The brake spring receiving tube 10091 is mounted on the inner wall of the car brake assemblies. On the magnet base 10090, the brake guide rod 10092 is telescopically slidably inserted into the brake spring receiving tube 10091. The brake spring 10093 is disposed in the brake spring receiving tube 10091, with its two ends abutting against the brake guide rod 10092 and the brake spring receiving tube 10091 respectively. An annular boss is provided on the outer wall of the middle part of the brake guide rod 10092. The brake spring 10093 abuts against this annular boss and also engages with the shoulder of the hole on the brake spring receiving tube 10091 to prevent the brake guide rod 10092 from falling off. Under normal circumstances, the electromagnetic coil is energized, attracting the brake guide rod 10092 and preventing it from contacting the guide rail 6. When emergency braking is required, the electromagnetic coil is de-energized, releasing the brake guide rod 10092. The two brake guide rods 10092 clamp together with the guide rail 6 under the action of the brake spring 10093, achieving braking.

[0068] The car brake 1009 can be installed at any position on the side of the main car frame assembly 100.

[0069] The features of this invention are:

[0070] 1) The traction machine 301 of the present invention is a permanent magnet synchronous gearless traction machine, which can solve the bottleneck of the development of heavy load and high speed elevators. The traction machines 301 are arranged opposite each other and still share a counterweight and guiding system, without increasing the size of the shaft.

[0071] 2) The control system is designed so that the car can only be moved when both traction machines 301 are rotating;

[0072] 3) Control system design: When one traction machine 301 stops at the door zone, the other traction machine 301 cannot continue to rotate. At the same time, the control system controls the car brake 1009 on the car frame to activate, so as to avoid the car moving unexpectedly due to the two traction machines being out of sync.

[0073] 4) A safety clamp fixing block 1007 is installed between the safety clamp and the sliding guide shoe to increase the height of the sliding guide shoe, and a support limiting component 1006 is installed on the safety clamp fixing block 1007 and the sliding guide shoe to effectively prevent the safety clamp from malfunctioning due to friction between the safety clamp and the guide rail 6 when the car is unevenly loaded.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-traction machine driven elevator, characterized in that, include: A car frame assembly (1) includes a main car frame assembly (100), which includes a main car frame lower beam assembly, two main car frame straight beam assemblies (1001) disposed on the main car frame lower beam assembly, and a main car frame upper beam assembly disposed on the upper ends of the two main car frame straight beam assemblies (1001). The main car frame upper beam assembly includes a main car frame upper beam body (1002). Two sets of car top anti-rope wheel assemblies (1003) are disposed on the left and right sides of the main car frame upper beam body (1002). The car top anti-rope wheel assembly (1003) includes a car top anti-rope wheel mounting frame (10030), a wheel assembly (10031) installed in the car top anti-rope wheel mounting frame (10030), and two sets of front and rear shock absorption assemblies. The anti-rope wheel mounting frame (10030) has shock absorption mounting parts (100300) on the front and rear sides. 00300) is located at the lower end of the main car frame upper beam body (1002). The front and rear shock absorption components are respectively installed on the shock absorption mounting parts (100300) on the front and rear sides. The upper end of the shock absorption component is connected to the main car frame upper beam body (1002). The main car frame assembly (100) is provided with safety clamps, sliding guide shoes and support limiting components (1006) on both the left and right sides. The support limiting component (1006) is located next to the safety clamp. It is a spring push rod structure and is used to push against the guide rail (6) when the elevator is eccentrically loaded. The support limiting component (1006) includes a spring receiving tube (10060), a guide rod (10061) that is telescopically cooperated with the spring receiving tube (10060), and a support spring (10062) that is set in the spring receiving tube (10060) and abuts against the guide rod (10061). The guide rod (10061) is used to abut against the guide rail (6). Counterweight assembly (2); Car assembly (5), which is disposed in car frame assembly (1); The traction machine assembly (3) includes a traction machine frame (300) and two traction machines (301) arranged opposite each other on the traction machine frame (300); and The traction wire rope (4) is wound on the traction machine (301) and driven by the traction machine (301). Its two ends are respectively connected to the car frame assembly (1) and the counterweight frame assembly (2).

2. The dual traction machine driven elevator according to claim 1, characterized in that, Each shock absorber assembly includes several shock absorber components arranged in a row along the left and right direction. The shock absorber assembly includes a spring guide and a shock absorber spring (10032) sleeved on the spring guide. The upper and lower ends of the spring guide are respectively connected to the main frame upper beam body (1002) and the shock absorber mounting part (100300). It is a telescopic structure that can extend and retract with the compression and extension of the shock absorber spring (10032).

3. The dual-traction machine driven elevator according to claim 1, characterized in that, The support and limiting components (1006) are arranged in pairs, with the two support and limiting components (1006) located on the front and rear sides of the guide rail (6) respectively.

4. A dual-traction machine driven elevator according to claim 1, characterized in that, The main car frame assembly (100) is provided with a car brake (1009) on the left and / or right sides. The car brake (1009) includes two sets of electromagnetic braking assemblies, which are electromagnetic telescopic rod structures. The two sets of electromagnetic braking assemblies together clamp the guide rail (6).

5. A dual-traction machine driven elevator according to claim 1, characterized in that, The car frame assembly has two sub-car frame assemblies (101), which are respectively connected to the front and rear sides of the main car frame assembly (100).

Images