Abnormal elongation detection device for elevator steel belt

Abstract

The invention relates to the technical field of elevator steel belt detection, and discloses an elevator steel belt abnormal elongation detection device which comprises a shaft assembly, a counterweight guide rail is arranged on the outer side of the shaft assembly, a car guide rail is arranged in the shaft assembly, a counterweight plate is movably installed on the counterweight guide rail, a car piece is movably installed on the car guide rail, and a pulley assembly is arranged on the car piece. A traction steel belt is connected in the pulley assembly in a transmission and winding mode, a traction assembly is installed at the top end of the hoistway assembly, one end of the traction steel belt is fixedly connected with the counterweight plate, and the other end of the traction steel belt sequentially bypasses the traction assembly and the pulley assembly and then is fixedly connected with the bottom side of the top end of the hoistway assembly. Whether the traction steel belt abnormally extends or not is directly judged by directly detecting the belt width deformation quantity of the traction steel belt, the method is more accurate than a traditional method that a sensor is arranged for detection, and meanwhile the alarm function of abnormal extension detection of the steel belt is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator steel belt detection, and more specifically to an elevator steel belt abnormal elongation detection device. Background Art

[0002] When the elevator is running, it will use steel belts or steel ropes for traction. During long-term use, the steel belts will deform and elongate abnormally due to wear or overload. The abnormally elongated steel belts will reduce their service life and load, and increase the safety risks of the elevator. Therefore, in order to maintain the safety performance of the elevator, the staff will conduct safety inspections on the elevator steel belts; However, the elevator steel belt abnormal elongation detection device under the existing technology still has the following shortcomings: When using the elevator steel belt abnormal elongation detection device under the existing technology, sensors are often used to monitor the length change of the steel belt in real time. However, this measurement method is affected by many factors, such as ambient temperature, humidity, vibration, etc. These factors may lead to inaccurate detection results, thereby affecting the accuracy of the detection; Therefore, in order to solve the above problems, it is necessary to provide an elevator steel belt abnormal elongation detection device. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an elevator steel belt abnormal elongation detection device to solve the problems existing in the above-mentioned background technology.

[0004] The present invention provides the following technical solutions: an elevator steel belt abnormal elongation detection device, comprising a shaft assembly, a counterweight guide rail is provided on the outer side of the shaft assembly, a car guide rail is provided in the shaft assembly, a counterweight plate is movably installed on the counterweight guide rail, a car member is movably installed on the car guide rail, a pulley assembly is provided on the car member, a traction steel belt is transmission-wound in the pulley assembly, a traction assembly is installed at the top of the shaft assembly, one end of the traction steel belt is fixedly connected to the counterweight plate, and the other end of the traction steel belt is fixedly connected to the bottom side of the top of the shaft assembly after passing through the traction assembly and the pulley assembly in sequence, the device also includes a steel belt detection mechanism, the steel belt detection mechanism is arranged at the bottom side of the top of the shaft assembly, and a weighing early warning mechanism is provided between the top of the car member and the pulley assembly; The belt body of the traction steel belt passes through the steel belt detection mechanism. The change in the belt body width of the traction steel belt will cause the steel belt detection mechanism to deform. The deformation of the steel belt detection mechanism will cause the weighing early warning mechanism to sound an alarm.

[0005] Furthermore, the shaft assembly includes four shaft columns, the bottom ends of the shaft columns are fixedly installed with a load-bearing bottom plate, the top ends of the shaft columns are fixedly installed with a top plate, the counterweight guide rails are arranged between the shaft columns, the car guide rails are arranged between the load-bearing bottom plate and the top plate, and the top plate is provided with a speed limiting assembly.

[0006] Furthermore, the traction assembly includes a seat plate, on which a traction motor is fixedly mounted, a driving shaft of the traction motor is fixedly sleeved with a traction wheel, and the traction steel belt sequentially passes around the traction wheel and the pulley assembly and is fixedly connected to the bottom side of the top plate.

[0007] Furthermore, both sides of the car member are movably connected to the car guide rails, the pulley assembly includes a traction frame, a wheel groove is provided in the traction frame, wheel axles are symmetrically connected in the inner wall of the wheel groove, and traction wheels are movably connected on the shaft body of the wheel axle, and the belt body of the traction steel belt passes around the symmetrically distributed traction wheels in sequence.

[0008] Furthermore, the weighing warning mechanism includes a bottom connecting plate, the upper surface of the bottom connecting plate is fixedly connected to the bottom surface of the traction frame, a weighing controller is fixedly installed on the bottom connecting plate, a lower folding plate is fixedly installed on the bottom end of the bottom connecting plate, an upper folding plate is fixedly installed on the top end of the car part, the lower folding plate and the upper folding plate are complementary, the left end of the lower folding plate is fixedly connected to a left connecting column, the shaft of the left connecting column movably passes through the plate body of the upper folding plate and is fixedly connected to the bottom connecting plate, the right end of the upper folding plate is fixedly connected to a right connecting column, the shaft of the right connecting column movably passes through the plate body of the lower folding plate and is fixedly connected to the top of the car part, buffer springs are sleeved on the shafts of the left connecting column and the right connecting column, a pressure sensor is fixedly installed on the plate body of the lower folding plate, the pressure-bearing end of the pressure sensor contacts the plate surface of the upper folding plate, and the pressure sensor is electrically connected to the weighing controller.

[0009] Furthermore, the steel belt detection mechanism includes an axial support plate, two of which are fixedly installed at the front and rear ends of the bottom side of the top plate, a guide shaft is connected between the axial support plates, a guide wheel is movably sleeved on the guide shaft, and the guide wheel contacts the belt body of the traction steel belt and keeps the upper section of the belt body in a vertical state.

[0010] Furthermore, a left block is fixedly installed on one side of the bottom of the top plate, and a right block is fixedly installed on the other side of the bottom of the top plate, and two groups of telescopic rods are fixedly connected to the opposite surfaces of the left block and the right block, and the telescopic ends of the telescopic rods are sleeved with compression springs, and the end of the telescopic rod body connected to the left block is fixedly connected to a left pressure block, and the end face of the left pressure block is fixedly connected to a touch rod, and the end of the telescopic rod body connected to the right block is fixedly connected to a right pressure block, a sleeve groove is opened in the right pressure block, and an alarm switch is provided at the end of the sleeve groove of the right pressure block, and the touch rod is movably sleeved with the sleeve groove, and a side shaft is connected between the opposite surfaces of the left pressure block, and a pressure wheel is movably sleeved on the shaft body of the side shaft, and the belt body of the traction steel belt passes between the two pressure wheels and contacts with them, and the distance between the end of the touch rod and the alarm switch is not greater than the maximum allowable deformation of the traction steel belt, and the alarm switch is electrically connected to the weighing controller.

[0011] Technical effects and advantages of the present invention: The present invention is provided with a steel belt detection mechanism and a weighing early warning mechanism. When the traction steel belt is abnormally elongated due to wear or overload, the belt width will gradually decrease. At this time, when the belt body of the traction steel belt passes through the pressure wheel, the distance between the pressure wheels on both sides will be reduced, thereby reducing the distance between the touch rod and the alarm switch. When the belt width deformation of the traction steel belt affects its service life and load, the touch rod contacts and triggers the alarm switch, and the alarm switch triggers the alarm function of the weighing controller. The device directly determines whether the traction steel belt is abnormally elongated by directly detecting the belt width deformation of the traction steel belt. It is more accurate than the traditional method of detecting by setting a sensor, and simultaneously realizes the alarm function of abnormal steel belt elongation detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a schematic diagram of the structure of the hoistway assembly of the present invention.

[0014] Figure 3 It is a structural schematic diagram of the weighing warning mechanism of the present invention.

[0015] Figure 4 It is a structural schematic diagram of the steel strip detection mechanism of the present invention.

[0016] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the steel strip detection mechanism of the present invention.

[0017] The reference numerals are: 1, shaft assembly; 101, shaft column; 102, load-bearing bottom plate; 103, top plate; 2, counterweight guide rail; 3, car guide rail; 4, counterweight plate; 5, car member; 6, pulley assembly; 601, traction frame; 602, wheel groove; 603, wheel axle; 604, traction wheel; 7, traction steel belt; 8, traction assembly; 801, seat plate; 802, traction motor; 803, traction wheel; 9, steel belt detection mechanism; 901, shaft support plate; 902, guide shaft; 903, guide wheel; 904, left block; 905, right block; 906, telescopic rod; 907, compression spring; 908, left pressure block; 909, touch rod; 910, right pressure block; 911, alarm switch; 912, side shaft; 913, pressure wheel; 10, weighing warning mechanism; 1001, bottom plate; 1002, weighing controller; 1003, lower folding plate; 1004, upper folding plate; 1005, left connecting column; 1006, right connecting column; 1007, buffer spring; 1008, pressure sensor; 11, speed limit component. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The abnormal elongation detection device for elevator steel belts involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained without creative work by ordinary technicians in this field belong to the scope of protection of the present invention.

[0019] Reference Figure 1 and Figure 2 The present invention provides an abnormal elongation detection device for an elevator steel belt, comprising a shaft assembly 1, wherein the shaft assembly 1 comprises four shaft columns 101, wherein a load-bearing bottom plate 102 is fixedly installed at the bottom end of the shaft column 101, and a top plate 103 is fixedly installed at the top end of the shaft column 101, a counterweight guide rail 2 is arranged between the shaft columns 101, and a car guide rail 3 is arranged between the load-bearing bottom plate 102 and the top plate 103, a counterweight plate 4 is movably installed on the counterweight guide rail 2, and a car member 5 is movably installed on the car guide rail 3, and a pulley assembly 6 is arranged on the car member 5, wherein a traction steel belt is transmitted and wound around the pulley assembly 6 7. A traction assembly 8 is installed on the top plate 103. The traction assembly 8 includes a seat plate 801. A traction motor 802 is fixedly installed on the seat plate 801. The driving shaft of the traction motor 802 is fixedly sleeved with a traction wheel 803. One end of the traction steel belt 7 is fixedly connected to the counterweight plate 4, and the other end of the traction steel belt 7 is fixedly connected to the bottom side of the top plate 103 after passing through the traction wheel 803 and the pulley assembly 6 in sequence. A steel belt detection mechanism 9 is arranged at the bottom side of the top plate 103. A weighing warning mechanism 10 is arranged between the top of the car part 5 and the pulley assembly 6. A speed limiting component 11 is arranged on the top plate 103. In this embodiment, the traction motor 802 drives the traction wheel 803 to make the traction steel belt 7 run, thereby achieving the traction effect on the car part 5, and the speed limiting component 11 provides a speed limiting effect for the movement of the car part 5. The specific structure and working principle of the above components will be described in detail later.

[0020] Reference Figure 3 , both sides of the car member 5 are movably connected with the car guide rail 3, the pulley assembly 6 includes a traction frame 601, a wheel groove 602 is provided in the traction frame 601, a wheel axle 603 is symmetrically connected in the inner wall of the wheel groove 602, and a traction wheel 604 is movably connected on the shaft body of the wheel axle 603, and the belt body of the traction steel belt 7 passes around the symmetrically distributed traction wheels 604 in sequence, and the weighing warning mechanism 10 includes a bottom connecting plate 1001, the upper surface of the bottom connecting plate 1001 is fixedly connected to the bottom surface of the traction frame 601, a weighing controller 1002 is fixedly installed on the bottom connecting plate 1001, a lower folding plate 1003 is fixedly installed at the bottom end of the bottom connecting plate 1001, an upper folding plate 1004 is fixedly installed on the top of the car member 5, and the lower folding plate 1003 The lower folding plate 1003 is complementary to the upper folding plate 1004. The left end of the lower folding plate 1003 is fixedly connected with a left connecting column 1005. The shaft of the left connecting column 1005 moves through the plate body of the upper folding plate 1004 and is fixedly connected to the bottom connecting plate 1001. The right end of the upper folding plate 1004 is fixedly connected with a right connecting column 1006. The shaft of the right connecting column 1006 moves through the plate body of the lower folding plate 1003 and is fixedly connected to the top of the car member 5. The shafts of the left connecting column 1005 and the right connecting column 1006 are both sleeved with buffer springs 1007. A pressure sensor 1008 is fixedly installed on the plate body of the lower folding plate 1003. The pressure-bearing end of the pressure sensor 1008 contacts the plate surface of the upper folding plate 1004. The pressure sensor 1008 is electrically connected to the weighing controller 1002. In this embodiment, the total weight of the car part 5 and the people or objects in the car part 5 will exert pressure on the pressure sensor 1008, and its weight will be measured by the pressure sensor 1008 and converted into an electrical signal and transmitted to the weighing controller 1002. By setting the corresponding alarm threshold for the weighing controller 1002, the alarm function of the device when the car part 5 is overloaded is realized.

[0021] Reference Figure 4 and Figure 5The steel belt detection mechanism 9 includes an axial support plate 901, and the number of the axial support plates 901 is two and they are fixedly installed on the front and rear ends of the bottom side of the top plate 103. A guide shaft 902 is connected between the axial support plates 901, and a guide wheel 903 is movably sleeved on the guide shaft 902. The guide wheel 903 contacts the belt body of the traction steel belt 7 and keeps the upper belt body of the traction steel belt 7 in a vertical state. A left block 904 is fixedly installed on one side of the bottom of the top plate 103, and a right block 905 is fixedly installed on the other side of the bottom of the top plate 103. Two groups of telescopic rods 906 are fixedly connected on the opposite surfaces of the left block 904 and the right block 905. The telescopic ends of the telescopic rods 906 are sleeved with compression springs 907, and the end of the rod body of the telescopic rod 906 connected to the left block 904 is fixedly connected to the left compression spring Block 908, a touch rod 909 is fixedly connected to the end face of the left pressure block 908, a right pressure block 910 is fixedly connected to the end of the telescopic rod 906 connected to the right block 905, a fitting groove is provided in the right pressure block 910, an alarm switch 911 is provided at the end of the fitting groove of the right pressure block 910, the touch rod 909 is movably sleeved with the fitting groove, side shafts 912 are connected between the opposite surfaces of the left pressure block 908, a pressure wheel 913 is movably sleeved on the shaft body of the side shaft 912, the belt body of the traction steel belt 7 passes through between the two pressure wheels 913 and contacts with them, the distance between the end of the touch rod 909 and the alarm switch 911 is not greater than the maximum allowable deformation of the traction steel belt 7, and the alarm switch 911 is electrically connected to the weighing controller 1002; In this embodiment, when the traction steel belt 7 is abnormally elongated due to wear or overload, the width of the belt will gradually decrease. At this time, when the belt of the traction steel belt 7 passes through the pressure wheel 913, the distance between the pressure wheels 913 on both sides will be reduced, thereby reducing the distance between the touch rod 909 and the alarm switch 911. When the deformation of the belt width of the traction steel belt 7 affects its service life and load, the touch rod 909 contacts and triggers the alarm switch 911, and the alarm switch 911 triggers the alarm function of the weighing controller 1002, thereby realizing the abnormal elongation detection alarm function of the steel belt of the device.

[0022] Working principle of the present invention: When the device is in use, when the traction steel belt 7 is abnormally elongated due to wear or overload, the width of the belt will gradually decrease. At this time, when the belt of the traction steel belt 7 passes through the pressure wheel 913, the distance between the pressure wheels 913 on both sides will be reduced, thereby reducing the distance between the touch rod 909 and the alarm switch 911. When the belt width deformation of the traction steel belt 7 affects its service life and load, the touch rod 909 contacts and triggers the alarm switch 911. The alarm switch 911 triggers the alarm function of the weighing controller 1002, thereby realizing the abnormal elongation detection alarm function of the steel belt of the device.

[0023] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator steel belt abnormal elongation detection device, comprising a shaft assembly (1), a counterweight guide rail (2) is provided on the outer side of the shaft assembly (1), a car guide rail (3) is provided in the shaft assembly (1), a counterweight plate (4) is movably mounted on the counterweight guide rail (2), a car member (5) is movably mounted on the car guide rail (3), a pulley assembly (6) is provided on the car member (5), a traction steel belt (7) is transmission-wound in the pulley assembly (6), a traction assembly (8) is installed at the top end of the shaft assembly (1), one end of the traction steel belt (7) is fixedly connected to the counterweight plate (4), and the other end of the traction steel belt (7) is fixedly connected to the bottom side of the top end of the shaft assembly (1) after passing through the traction assembly (8) and the pulley assembly (6) in sequence, and is characterized in that: The device further comprises a steel belt detection mechanism (9), wherein the steel belt detection mechanism (9) is arranged at the bottom side of the top of the hoistway assembly (1), and a weighing warning mechanism (10) is arranged between the top of the car member (5) and the pulley assembly (6); The belt body of the traction steel belt (7) passes through the steel belt detection mechanism (9). Changes in the belt body width of the traction steel belt (7) cause the steel belt detection mechanism (9) to deform. The deformation of the steel belt detection mechanism (9) causes the weighing early warning mechanism (10) to sound an alarm.

2. The device for detecting abnormal elongation of an elevator steel belt according to claim 1, characterized in that: The shaft assembly (1) comprises four shaft columns (101), a load-bearing bottom plate (102) being fixedly mounted at the bottom end of the shaft column (101), a top plate (103) being fixedly mounted at the top end of the shaft column (101), the counterweight guide rail (2) being arranged between the shaft columns (101), the car guide rail (3) being arranged between the load-bearing bottom plate (102) and the top plate (103), and a speed limiting assembly (11) being arranged on the top plate (103).

3. The device for detecting abnormal elongation of an elevator steel belt according to claim 1, characterized in that: The traction assembly (8) comprises a seat plate (801), a traction motor (802) is fixedly mounted on the seat plate (801), a traction wheel (803) is fixedly sleeved on a drive shaft of the traction motor (802), and the traction steel belt (7) passes through the traction wheel (803) and the pulley assembly (6) in sequence and is fixedly connected to the bottom side of the top plate (103).

4. The device for detecting abnormal elongation of an elevator steel belt according to claim 1, characterized in that: Both sides of the car member (5) are movably sleeved with the car guide rail (3), the pulley assembly (6) comprises a traction frame (601), a wheel groove (602) is provided in the traction frame (601), a wheel axle (603) is symmetrically sleeved in the inner wall of the wheel groove (602), a traction wheel (604) is movably sleeved on the shaft body of the wheel axle (603), and the belt body of the traction steel belt (7) passes around the symmetrically distributed traction wheels (604) in sequence.

5. The device for detecting abnormal elongation of an elevator steel belt according to claim 4, characterized in that: The weighing warning mechanism (10) comprises a bottom connecting plate (1001), the upper surface of the bottom connecting plate (1001) is fixedly connected to the bottom surface of the traction frame (601), a weighing controller (1002) is fixedly installed on the bottom connecting plate (1001), a lower folding plate (1003) is fixedly installed on the bottom end of the bottom connecting plate (1001), an upper folding plate (1004) is fixedly installed on the top end of the car member (5), the lower folding plate (1003) and the upper folding plate (1004) are complementary, the left end of the lower folding plate (1003) is fixedly connected to a left connecting column (1005), and the shaft of the left connecting column (1005) movably passes through the upper folding plate (1004). The plate body is fixedly connected to the bottom connecting plate (1001); the right end of the upper folding plate (1004) is fixedly connected to a right connecting column (1006); the shaft of the right connecting column (1006) movably passes through the plate body of the lower folding plate (1003) and is fixedly connected to the top of the car member (5); the shafts of the left connecting column (1005) and the right connecting column (1006) are both sleeved with buffer springs (1007); a pressure sensor (1008) is fixedly installed on the plate body of the lower folding plate (1003); the pressure-bearing end of the pressure sensor (1008) is in contact with the plate surface of the upper folding plate (1004); and the pressure sensor (1008) is electrically connected to the weighing controller (1002).

6. The device for detecting abnormal elongation of an elevator steel belt according to claim 2, characterized in that: The steel belt detection mechanism (9) comprises shaft support plates (901), two of which are fixedly mounted at the front and rear ends of the bottom side of the top plate (103), guide shafts (902) are connected between the shaft support plates (901), and guide wheels (903) are movably sleeved on the guide shafts (902), and the guide wheels (903) are in contact with the belt body of the traction steel belt (7) and keep the upper belt body of the traction steel belt (7) in a vertical state.

7. The device for detecting abnormal elongation of an elevator steel belt according to claim 2, characterized in that: A left block (904) is fixedly mounted on one side of the bottom of the top plate (103), and a right block (905) is fixedly mounted on the other side of the bottom of the top plate (103). Two sets of telescopic rods (906) are fixedly connected to the opposite surfaces of the left block (904) and the right block (905). The telescopic ends of the telescopic rods (906) are sleeved with compression springs (907). A left pressure block (908) is fixedly connected to the end of the rod body of the telescopic rod (906) connected to the left block (904), and a touch rod (909) is fixedly connected to the end surface of the left pressure block (908). A right pressure block (91 0), a fitting groove is provided in the right pressure block (910), an alarm switch (911) is provided at the end of the fitting groove of the right pressure block (910), the touch rod (909) is movably connected to the fitting groove, side shafts (912) are connected between the opposite surfaces of the left pressure block (908), a pressure wheel (913) is movably connected to the shaft body of the side shaft (912), the belt body of the traction steel belt (7) passes between the two pressure wheels (913) and contacts with them, the distance between the end of the touch rod (909) and the alarm switch (911) is not greater than the maximum allowable deformation of the traction steel belt (7), and the alarm switch (911) is electrically connected to the weighing controller (1002).

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