Anti-hanging cable arm with protection function

Abstract

The anti-hanging cable arm with the protection function comprises a fixed seat, a rotating arm, a detection device, a locking device and a limiting switch, the fixed seat is installed on a suspension cage and connected with one end of the rotating arm through a first rotating shaft, the rotating arm can rotate around the first rotating shaft, the other end of the rotating shaft is connected with the detection device, and the locking device is connected with the limiting switch. The abnormal stress state of the cable can be checked, and whether the cable is hung or not is judged, so that dangers such as hanging-off of the cable and power-off of the cage are avoided; meanwhile, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model belongs to the field of construction elevators, and in particular relates to an anti-hanging cable arm with a protective function. Background Art

[0002] A construction elevator, also known as a construction lift, outdoor elevator, or site hoist cage, is widely used in the construction industry as a means of transporting people and cargo. It is primarily used for interior and exterior decoration of high-rise buildings, as well as for the construction of bridges, chimneys, and other structures. A construction elevator primarily consists of guardrails, a chassis, a cage, a guide rail, a drive unit, and a power supply system. This power supply system typically consists of cables, cable drums, cable retainers, and a cable arm, which secures the cables to the cage and allows it to move with the elevator.

[0003] Existing cable arms used in construction hoists are typically simple fixtures that fail to determine the cable's operating status. If the cable is in use and there are issues with mounting a cable guard or constructing scaffolding, continued operation of the hoist cage can lead to safety accidents such as cable breakage, cage power outages, and cage deformation. Summary of the Invention

[0004] In order to overcome the shortcomings of the above-mentioned existing technologies, the utility model provides an anti-hanging cable arm with a protective function, which can check the abnormal stress state of the cable and determine whether the cable is hung, thereby avoiding dangers such as cable hanging and cage power outage; at the same time, it has a simple structure and low production cost.

[0005] To achieve the above-mentioned object, the utility model adopts the following technical solution: an anti-hanging cable arm with a protective function, comprising a fixed seat, a rotating arm, a detection device, a locking device and a limit switch, wherein the fixed seat is mounted on the cage, the fixed seat is connected to one end of the rotating arm via a first rotating shaft, the rotating arm can rotate around the first rotating shaft, and the other end of the rotating shaft is connected to the detection device;

[0006] The fixing seat includes a fixing rod and a clamping plate, the two clamping plates are fixed on both sides of the fixing rod, the two clamping plates are provided with waist-shaped long holes and a through hole for passing the first rotating shaft, a gap is left between the two clamping plates for passing the power supply cable and installing the rotating arm, and at least one clamping plate is provided with a limit switch;

[0007] The rotating arm includes an arm, a sleeve and a limit plate. The arm is a box-shaped rectangular structure with two open ends. A limit plate is provided in the middle of the arm. One end of the arm is connected to the clamping plate and the other end is connected to the sleeve. The sleeve is circular and has a sealing plate with a circular hole at the bottom. The upper end of the arm is provided with a second rotating shaft.

[0008] The detection device includes a connecting rod, a pressure plate, a detection spring and a cable fixing device. One end of the connecting rod is provided with a thread and the other end is provided with a lug. The pressure plate and the detection spring are sleeved outside the connecting rod and connected by a nut. The cable fixing device is connected to the lug by a bolt.

[0009] The locking device includes a locking rod, a locking block rod, a thrust spring, a sleeve and a tightening screw. One end of the locking rod is connected to the connecting rod of the detection device by a nut, and the other end is a structure with a bent hook. A through hole is provided in the middle of the locking rod, and the locking rod is connected to the second rotating shaft through the through hole. The locking block rod is passed through the waist-shaped long hole of the fixing seat. Thrust springs are provided on both sides of the locking block rod. The ends of the thrust springs are installed in the sleeve, and a spring groove is provided on the rotating arm. The tightening screw is screwed on the spring groove of the rotating arm and tightens the sleeve. A hook is provided in the middle of the locking baffle to cooperate with the structure with a bent hook of the locking rod.

[0010] In the above technical solution, a guide plate is connected to the bottom surface of the arm, and the guide plate is a V-shaped structure.

[0011] In the above technical solution, the locking lever includes a rod body, a hook and a baffle, the baffles are installed at both ends of the rod body, and the baffles are larger than the cross-section of the rod body, and the hook is installed in the middle of the rod body.

[0012] In the above technical solution, the cable fixing device is one of a cable clamp and a cable net.

[0013] In the above technical solution, the limit switch is one of a rocker-type limit switch, a proximity switch, and a photoelectric switch.

[0014] In the above technical solution, a rubber guard is provided above the locking link.

[0015] In the above technical solution, a protective cover is provided on the arm.

[0016] The beneficial effects of the present utility model are as follows: the device can detect whether the power supply cable of the elevator is under abnormal stress, and control the cage to stop when an abnormality occurs, thereby avoiding dangers such as cable breakage and cage power outage; at the same time, the device has a simple structure and low cost, can be installed on a general elevator cage, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model.

[0018] Figure 2 It is a half-section view of the present invention.

[0019] Figure 3 This is a schematic diagram of the installation of the present utility model.

[0020] Figure 4 for Figure 1 The main structural view of the middle fixed seat.

[0021] Figure 5 for Figure 4 Top view of .

[0022] Figure 6 for Figure 1 The main structural view of the middle rotating arm.

[0023] Figure 7 for Figure 6 Top view of the structure.

[0024] Figure 8 for Figure 1 Schematic diagram of the structure of the detection device.

[0025] Figure 9 for Figure 1 Schematic diagram of the structure of the locking device.

[0026] Figure 10 for Figure 9 AA cross-sectional view.

[0027] Figure 11 for Figure 9 Schematic diagram of the structure of the locking lever.

[0028] Figure 12 It is a schematic diagram of the operation of the utility model when the cable is overloaded downward.

[0029] Figure 13 This is a schematic diagram of the operation of the utility model when the cable is abnormally pulled upward.

[0030] Wherein: 1. this device, 11. fixing seat, 12. rotating arm, 13. detection device, 14. locking device, 15. proximity switch, 16. protective cover, 17. rubber guard, 18. power supply cable, 19. first rotating shaft, 20. second rotating shaft, 21. hanging cage, 22. cable drum, 111. fixing rod, 112. first splint, 113. second splint, 121. arm, 122. sleeve, 123. limit plate, 124. guide plate, 131. connecting rod, 132. pressure plate, 133. detection spring, 134. cable fixing device, 141. locking connecting rod, 142. locking stop rod, 143. thrust spring, 144. sleeve two, 145. tightening screw, 1421. rod body, 1422. baffle, 1423. hook. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 11The illustrated embodiment of a cable arm with a protective function includes a fixing base 11, a rotating arm 12, a detection device 13, a locking device 14, and a limit switch 15. The fixing base 11 is mounted on a cage 21 and is connected to one end of the rotating arm 12 via a first rotating shaft 19. The rotating arm 12 can rotate about the first rotating shaft 19, and the other end of the first rotating shaft is connected to the detection device 13.

[0033] The fixing base 11 includes a fixing rod 111 and a first clamping plate 112 and a second clamping plate 113. The first clamping plate 112 and the second clamping plate 113 are on both sides of the fixing rod 111. The first clamping plate 112 and the second clamping plate 113 are provided with a waist-shaped long hole and a through hole for passing the first rotating shaft 19. A gap is left between the first clamping plate 112 and the second clamping plate 113 to pass the power supply cable 18 and the installation rotating arm 12. At least one clamping plate is provided with a limit switch 15.

[0034] The rotating arm 12 includes an arm 121, a sleeve 122 and a limit plate 123. The arm 121 is a box-shaped rectangular structure with two open ends. A limit plate 123 is provided in the middle of the arm 121. One end of the arm 121 is connected to the first clamping plate 112 and the second clamping plate 113, and the other end is connected to the sleeve 122. The sleeve 122 is circular and has a sealing plate with a circular hole at the bottom. The upper end of the arm 121 is provided with a second rotating shaft 20.

[0035] The detection device 13 includes a connecting rod 131, a pressure plate 132, a detection spring 133 and a cable fixing device 134. The connecting rod 131 has a thread at one end and a lug at the other end. The pressure plate 132 and the detection spring 133 are sleeved outside the connecting rod 131 and connected by nuts. The cable fixing device 134 is connected to the lug by bolts.

[0036] When the cable is pulled downward, the connecting rod compresses the spring via the pressure plate. The displacement and compression of the spring detect the cable tension. Bolts are installed on connecting rod 131, which compress pressure plate 132 and detection spring 133 to adjust the preload of the detection spring. If the tension is too great, exceeding the preload of the detection spring, the connecting rod continues to compress the detection spring downward, triggering the locking mechanism.

[0037] The locking device 14 includes a locking link 141, a locking block rod 142, a thrust spring 143, a sleeve 144 and a tightening screw 145. One end of the locking link 141 is connected to the connecting rod 131 of the detection device 13 by a nut, and the other end is a structure with a bent hook. A through hole is provided in the middle of the locking link 141, and the locking link is connected to the second rotating shaft 20 through the through hole. The locking block rod 142 is inserted into the waist-shaped long hole of the fixing seat 11, and thrust springs 143 are provided on both sides of the locking block rod 142. The end of the thrust spring is installed in the sleeve 144, and a spring groove is provided on the rotating arm. The tightening screw 145 is screwed on the spring groove of the rotating arm 12 and tightens the sleeve 144. A hook is provided in the middle of the locking baffle 142 to cooperate with the structure with the hook of the locking link 141. The hook of the locking baffle 142 can be hung with the structure with the hook of the locking link 141. The thrust spring pressure can be adjusted by adjusting the jacking screw 145. During normal operation, the locking bar and locking link are hooked together via a hook, with the locking bar blocking the rotating arm and compressing the thrust spring. If the cable is subjected to excessive force, the detection device pulls one end of the locking link downward, causing the locking link to rotate and unlock its hook with the locking bar. The locking bar is then pushed open by the thrust spring and releases its blockage of the rotating arm.

[0038] like Figure 3 As shown, the device 1 is installed on the cage 21 through the fixing seat 11, one end of the power supply cable 18 is in the cable drum 22, and the other end is fixed and passes through the device 1 to supply power to the cage 21.

[0039] In the above technical solution, a guide plate 124 is connected to the bottom surface of the arm 121. The guide plate 124 is a V-shaped structure, which is convenient for passing the cable guard.

[0040] In the above technical solution, the locking lever 142 includes a rod body 1421, a hook 1423, and a baffle 1422. The baffles 1422 are mounted at both ends of the rod body 1421 and are larger than the cross-section of the rod body. The hook 1423 is mounted in the middle of the rod body 1421. During installation, the rod body 1421 slides within the waist-shaped elongated hole of the fixing base 11. The two baffles 1422 clamp the rod body 1421 to prevent it from falling out, and the hook is fixed in the middle of the lever.

[0041] In the above technical solution, the cable fixing device 134 is a cable clamp or a cable net.

[0042] In the above technical solution, the limit switch 15 is one of a rocker-type limit switch, a proximity switch, and a photoelectric switch.

[0043] In the above technical solution, a rubber guard plate 17 is provided above the locking link 141 .

[0044] In the above technical solution, a protective cover 16 is provided on the arm 121 .

[0045] The protective cover 16 and the rubber guard 17 can prevent foreign matter from entering the interior of the cable arm and affecting the function of the locking device. At the same time, they can also easily pass through the cable guard ring to reduce damage to the cable guard ring.

[0046] like Figure 12 As shown, when the cage is ascending, the power supply cable 18 is caught by a foreign object, causing excessive tension. The detection device 13 compresses the detection spring 133 and pulls the locking link 141 downward. The locking link 141 and the locking stop bar 142 are no longer hooked together. The thrust spring 143 pushes the locking stop bar 142 to slide away from the rotating arm 12. The rotating arm 12 loses its restriction and rotates downward. The limit plate 123 leaves the proximity switch 15, and the cage 21 stops running immediately after receiving the signal from the limit switch 15. The rotating arm 12 rotates to release the power supply cable 18 at one end, ensuring that the power supply cable 18 is not damaged before the cage 21 stops.

[0047] like Figure 13 As shown, when the cage descends, a foreign object caught on the power cable 18 pulls the rotating arm 12 upward, causing the rotating arm 12 to rotate upward, and the limit plate 123 to move away from the limit switch 15. The cage 21 immediately stops after receiving the signal from the limit switch 15. The rotating arm 12 rotates to release a length of the power cable 18 at one end, ensuring that the power cable 18 is not damaged before the cage 21 stops.

[0048] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A cable arm with a protective function, characterized by: It includes a fixed seat, a rotating arm, a detection device, a locking device and a limit switch. The fixed seat is installed on the cage, and the fixed seat is connected to one end of the rotating arm through a first rotating shaft. The rotating arm can rotate around the first rotating shaft, and the other end of the rotating shaft is connected to the detection device. The fixing seat includes a fixing rod and a clamping plate, the two clamping plates are fixed on both sides of the fixing rod, the two clamping plates are provided with waist-shaped long holes and a through hole for passing the first rotating shaft, a gap is left between the two clamping plates for passing the power supply cable and installing the rotating arm, and at least one clamping plate is provided with a limit switch; The rotating arm includes an arm, a sleeve and a limit plate. The arm is a box-shaped rectangular structure with two open ends. A limit plate is provided in the middle of the arm. One end of the arm is connected to the clamping plate and the other end is connected to the sleeve. The sleeve is circular and has a sealing plate with a circular hole at the bottom. The upper end of the arm is provided with a second rotating shaft. The detection device includes a connecting rod, a pressure plate, a detection spring and a cable fixing device. One end of the connecting rod is provided with a thread and the other end is provided with a lug. The pressure plate and the detection spring are sleeved outside the connecting rod and connected by a nut. The cable fixing device is connected to the lug by a bolt. The locking device includes a locking rod, a locking block rod, a thrust spring, a sleeve and a tightening screw. One end of the locking rod is connected to the connecting rod of the detection device by a nut, and the other end is a structure with a bent hook. A through hole is provided in the middle of the locking rod, and the locking rod is connected to the second rotating shaft through the through hole. The locking block rod is passed through the waist-shaped long hole of the fixing seat. Thrust springs are provided on both sides of the locking block rod. The ends of the thrust springs are installed in the sleeve, and a spring groove is provided on the rotating arm. The tightening screw is screwed on the spring groove of the rotating arm and tightens the sleeve. A hook is provided in the middle of the locking baffle to cooperate with the structure with a bent hook of the locking rod.

2. The anti-hanging cable arm with protection function according to claim 1 is characterized by: The bottom surface of the arm is connected with a guide plate, which is a V-shaped structure.

3. The anti-hanging cable arm with protection function according to claim 1 is characterized by: The locking baffle comprises a rod body, a hook and a baffle, the baffles are mounted at both ends of the rod body, and the baffles are larger than the cross section of the rod body, and the hook is mounted in the middle of the rod body.

4. The anti-hanging cable arm with protection function according to claim 1 is characterized by: The cable fixing device is one of a cable clamp and a cable net.

5. The anti-hanging cable arm with protection function according to claim 1 is characterized by: The limit switch is one of a rocker-type limit switch, a proximity switch, and a photoelectric switch.

6. The anti-hanging cable arm with protection function according to claim 1 is characterized by: A rubber guard is provided above the locking connecting rod.

7. The anti-hanging cable arm with protection function according to claim 1 is characterized by: A protective cover is provided on the arm.

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