Lifting pulley

Abstract

The invention provides a hoisting pulley, and relates to the technical field of hoisting. A lifting hook and a steel wire rope are mounted on the pulley assembly; the positioning assembly is installed on the pulley assembly and used for positioning the combined pulley assembly. The detection assembly is installed on the pulley assembly and used for detecting the abrasion degree of the pulley assembly. The protection assembly is mounted on the pulley assembly and is used for protecting the detection assembly; the upper movable detection head is in contact with the steel wire rope, the lower movable detection head is in contact with the lifting hook, and the two movable detection heads are in clearance fit connection with the rectangular mounting block. According to the hoisting pulley, a worker can conveniently replace seriously-abraded accessories in time, and the safety in the hoisting process is improved; the hoisting pulley solves the problems that when the pulley and a lifting hook are seriously abraded, workers cannot find the abrasion in time, replacement of accessories is prone to being delayed, and potential safety hazards exist in the hoisting process.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting, and more specifically, particularly relates to a lifting pulley. Background Art

[0002] The lifting equipment usually includes a supporting component and a sling that matches the object to be lifted. A winch is arranged on the supporting component, and a pulley is arranged on the sling. The wire rope on the winch passes through the pulley on the sling. When the winch starts to reel in or release the wire, the wire rope drives the sling to rise or fall, thereby realizing the lifting of the goods.

[0003] For example, the publication number CN220976422U discloses a double-wheel pulley structure, comprising: a main body, comprising a connecting plate, the upper surface of the connecting plate is fixedly connected to a connecting column; a mounting mechanism, comprising a hook, the hook is fixedly installed on the surface of the connecting column, both ends of the hook are fixedly connected to connecting blocks, the surface of the connecting block is threadedly connected to a first bolt, the surface of the connecting block is fixedly connected to a spring, and the surface of the spring is fixedly connected to a clamping rod; the utility model uses the connecting block, the first bolt, the spring and the clamping rod to ensure that the hook is doubly limited on the connecting column. When the first bolt is loosened on the connecting block, the clamping rod replaces the first bolt on the connecting column, thereby preventing the pulley body from being separated from the load-bearing structure after the first bolt is loosened, thereby ensuring the safety of construction.

[0004] Although the implementation scheme of the above patent has the advantage of preventing the pulley body from being separated from the load-bearing structure and ensuring the safety of construction, it does not have the function of controlling the wear position and replacing accessories in time. Specifically: 1. The shaft on which the pulley is installed can usually rotate with the spreader, which causes easy wear between the shaft and the spreader, reducing the service life of the spreader; 2. When the pulley and hook are severely worn, the staff cannot discover it in time, which may easily delay the replacement of accessories and cause safety hazards in the lifting process. Summary of the invention

[0005] An embodiment of the present invention relates to a lifting pulley, which has a pulley assembly, a positioning assembly, a protection assembly and a detection assembly; the wear is completely caused to occur on the hook, two circular connecting shafts and the disc, thereby increasing the service life of the remaining accessories; it is convenient for staff to replace severely worn accessories in a timely manner, thereby improving the safety of the lifting process.

[0006] The present invention provides a lifting pulley, which specifically comprises a pulley assembly, a positioning assembly, a protection assembly and a detection assembly; a hook and a steel wire rope are installed on the pulley assembly; the positioning assembly is installed on the pulley assembly, and the positioning assembly is used to position the assembled pulley assembly; The detection assembly is installed on the pulley assembly, and the detection assembly is used to detect the wear degree of the pulley assembly; The protection component is installed on the pulley component, and the protection component is used to protect the detection component; The pulley assembly includes: a connecting plate A, a rectangular mounting block and a connecting plate B; the rectangular mounting block is welded to the front side of the connecting plate A, and the front side of the rectangular mounting block is provided with a chamfer; the connecting plate B is slidably mounted on the outside of the rectangular mounting block.

[0007] In at least some embodiments, the pulley assembly also includes: a positioning frame, a circular connecting shaft and a limiting clamp ring A; the positioning frame is welded to the outside of the rectangular mounting block, and the front side of the positioning frame is in contact with the connecting plate B; there are two circular connecting shafts, and the two circular connecting shafts are installed on the connecting plate A and the connecting plate B; there are four limiting clamp rings A, and the four limiting clamp rings A are welded to the outside of the two circular connecting shafts, and the outer sides of the four limiting clamp rings A are in contact with the connecting plate A and the connecting plate B.

[0008] In at least some embodiments, the pulley assembly further includes: a disc and a positioning screw; the disc is rotatably mounted on the upper circular connecting shaft; and the positioning screw is threadedly connected to the rectangular mounting block.

[0009] In at least some embodiments, the positioning assembly includes: a positioning block, a rectangular limit plate A and a rectangular limit plate B; the positioning block is slidably installed on the rectangular mounting block, and a chamfer is provided on the right side of the positioning block; the rear side of the positioning block contacts the connecting plate B, and the positioning screw is inserted into the positioning block; the rectangular limit plate A is welded to the top of the positioning block, and the rectangular limit plate A is inserted into the upper circular connecting shaft; the rectangular limit plate B is welded to the bottom of the positioning block, and the rectangular limit plate B is inserted into the lower circular connecting shaft.

[0010] In at least some embodiments, the protection assembly includes: a mounting bracket, a limit clamp ring B and a support wheel; there are two mounting brackets, and the two mounting brackets are rotatably mounted on the connecting plate A; there are four limit clamp rings B, and the four limit clamp rings B are welded to the outside of the two mounting brackets, and the inner sides of the four limit clamp rings B are in contact with the connecting plate A; there are two support wheels, and the two support wheels are rotatably mounted on the two mounting brackets, and the two support wheels and the disc are located in the same center plane.

[0011] In at least some embodiments, the protection component also includes: a limit clamp ring C, a tightening protrusion and a U-shaped reset seat; there are four limit clamp rings C in total, and the four limit clamp rings C are welded to the outside of the two mounting brackets, and the inner sides of the four limit clamp rings C are in contact with the two support wheels; there are two tightening protrusions in total, and the two tightening protrusions are welded to the outside of the two mounting brackets; the U-shaped reset seat is welded to the rear side of the connecting plate A.

[0012] In at least some embodiments, the protection assembly further includes: a circular reset rod, a limit clamp D and a reset spring A; there are two circular reset rods, which are welded to the inside of the U-shaped reset seat, and the two circular reset rods are inserted into the inside of the two mounting brackets; there are four limit clamps D, which are welded to the outside of the two circular reset rods, and the inner sides of the four limit clamps D are in contact with the two mounting brackets; there are four reset springs A, which are installed on the outside of the two circular reset rods, and the four reset springs A are located between the U-shaped reset seat and the two mounting brackets.

[0013] In at least some embodiments, the detection assembly includes: a movable detection head, a limit clamp ring E, a detection spring B and a winding rod; there are two movable detection heads, and the two movable detection heads are slidably installed inside the rectangular mounting block; the upper movable detection head is in contact with the wire rope, the lower movable detection head is in contact with the hook, and the two movable detection heads are loosely connected to the rectangular mounting block; there are two limit clamp rings E, and the two limit clamp rings E are welded to the outside of the two movable detection heads; there are two detection springs B, and the two detection springs B are installed on the outside of the two movable detection heads, and the two detection springs B are arranged between the rectangular mounting block and the two limit clamp rings E; the winding rod is welded to the inside of the rectangular mounting block.

[0014] In at least some embodiments, the detection assembly also includes: a U-shaped guide frame, a protective rope and a limit clamp ring F; there are two U-shaped guide frames in total, and the two U-shaped guide frames are welded to two mounting brackets; there are two protective ropes in total, and one end of the two protective ropes is fixedly installed on the inner side of the two movable detection heads; the other ends of the two protective ropes are inserted into the interior of the two U-shaped guide frames, and the two protective ropes are wrapped around the winding rod, and the two protective ropes are also in contact with the two tensioning protrusions; there are two limit clamp rings F in total, and the two limit clamp rings F are fixedly installed on the outer ends of the two protective ropes.

[0015] In at least some embodiments, the detection component also includes: a battery, a buzzer alarm and a switch; the battery is fixedly mounted on the rear side of the connecting plate A; the buzzer alarm is fixedly mounted on the rear side of the connecting plate A, and the battery is electrically connected to the buzzer alarm; there are two switches in total, and the two switches are fixedly mounted on two active detection heads, and the two switches are electrically connected to the battery and the buzzer alarm; when one of the switches is in a pressed state, the buzzer alarm works.

[0016] Compared with the prior art, the lifting pulley has the following beneficial effects: 1. The lifting pulley is convenient for the staff to replace the worn hook, two circular connecting shafts and discs, and plays a limiting role on the connecting plate B, making the connection plate A and the connecting plate B more firm after being combined; In addition, the two circular connecting shafts have a limiting effect, ensuring that the two circular connecting shafts and the connecting plates A and B do not rotate, so that all wear occurs on the hook, the two circular connecting shafts and the disc, thereby increasing the service life of the remaining accessories.

[0017] 2. For this lifting pulley, when the circular connecting shaft and disc on the top are seriously worn, the detection spring B on the top pushes the movable detection head to move upward. At this time, the switch on the top is in a pressed state, which makes it convenient for the staff to know that the circular connecting shaft and disc on the top are seriously worn; In addition, when the circular connecting shaft and hook below are severely worn, the detection spring B below pushes the movable detection head downward. At this time, the switch below is in a pressed state, which makes it convenient for the staff to know that the circular connecting shaft and hook below are severely worn, and it is convenient for the staff to replace the severely worn accessories in time, thereby improving the safety of the lifting process.

[0018] 3. When the lifting pulley is not connected to the cargo, the two support wheels support the wire rope under the action of four return springs A; when the hook is connected to the cargo, the wire rope pushes the two support wheels inward under the gravity of the cargo, causing the angles of the two mounting brackets to change; In addition, when the angles of the two mounting brackets change, the two tightening protrusions can tighten the two protective ropes, allowing the two movable detection heads to move simultaneously, ensuring that the two movable detection heads are separated from the hook and the wire rope when lifting cargo, thus avoiding wear of the two movable detection heads. Only when separated from the cargo, the two movable detection heads will detect the degree of wear of the hook, the two circular connecting shafts and the disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0021] In the attached picture: Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 The present invention Figure 1 Schematic diagram of the rear side perspective structure.

[0023] Figure 3 It is a structural schematic diagram of the pulley assembly, the hook and the positioning assembly of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the protection component of the present invention.

[0025] Figure 5 The present invention Figure 1 Schematic diagram of the central cut structure.

[0026] Figure 6 The present invention Figure 5 Schematic diagram of the local enlarged structure of area A in the middle.

[0027] Figure 7 It is a structural schematic diagram of the detection component of the present invention.

[0028] Figure 8 The present invention Figure 2 Schematic diagram of the local enlarged structure of area B in the middle.

[0029] List of reference numerals: 1. Pulley assembly; 101. Connecting plate A; 102. Rectangular mounting block; 103. Connecting plate B; 104. Positioning frame; 105. Circular connecting shaft; 106. Limiting collar A; 107. Disc; 108. Positioning screw; 2. Hook; 3. Wire rope; 4. Positioning assembly; 401. Positioning block; 402. Rectangular limiting plate A; 403. Rectangular limiting plate B; 5. Protection assembly; 501. Mounting bracket; 502. Limiting collar B; 503. Support wheel; 504. Limiting collar C; 505. Tightening protrusion; 506. U-shaped reset seat; 507. Round reset rod; 508. Limiting collar D; 509. Reset spring A; 6. Detection assembly; 601. Movable detection head; 602. Limiting clamp ring E; 603. Detection spring B; 604. Winding rod; 605. U-shaped guide frame; 606. Protection rope; 607. Limiting clamp ring F; 608. Battery; 609. Buzzer alarm; 610. Switch. DETAILED DESCRIPTION

[0030] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0031] Example: Please refer to Figures 1 to 8 As shown: The present invention provides a lifting pulley, comprising a pulley assembly 1, a positioning assembly 4, a protection assembly 5 and a detection assembly 6; a hook 2 and a steel wire rope 3 are installed on the pulley assembly 1; the positioning assembly 4 is installed on the pulley assembly 1, and the positioning assembly 4 is used to position the assembled pulley assembly 1; The detection component 6 is installed on the pulley assembly 1, and the detection component 6 is used to detect the wear degree of the pulley assembly 1; The protection component 5 is installed on the pulley component 1 , and the protection component 5 is used to protect the detection component 6 .

[0032] In the embodiment of the present invention, Figure 1 and Figure 3 As shown, the pulley assembly 1 includes: a connecting plate A101, a rectangular mounting block 102 and a connecting plate B103; the rectangular mounting block 102 is welded to the front side of the connecting plate A101, and the front side of the rectangular mounting block 102 is provided with a chamfer; the connecting plate B103 is slidably mounted on the outside of the rectangular mounting block 102; the pulley assembly 1 also includes: a positioning frame 104, a circular connecting shaft 105 and a limiting collar A106; the positioning frame 104 is welded to the outside of the rectangular mounting block 102, and the front side of the positioning frame 104 is in contact with the connecting plate B103; the circular connecting There are two shafts 105, and the two circular connecting shafts 105 are installed on the connecting plate A101 and the connecting plate B103; there are four limit collars A106, and the four limit collars A106 are welded to the outside of the two circular connecting shafts 105, and the outer sides of the four limit collars A106 are in contact with the connecting plate A101 and the connecting plate B103; the pulley assembly 1 also includes: a disc 107 and a positioning screw 108; the disc 107 is rotatably mounted on the upper circular connecting shaft 105; the positioning screw 108 is threadedly connected to the rectangular mounting block 102; The positioning assembly 4 includes: a positioning block 401, a rectangular limiting plate A402 and a rectangular limiting plate B403; the positioning block 401 is slidably mounted on the rectangular mounting block 102, and a chamfer is provided on the right side of the positioning block 401; the rear side of the positioning block 401 contacts the connecting plate B103, and the positioning screw 108 is inserted into the positioning block 401; the rectangular limiting plate A402 is welded to the top of the positioning block 401, and the rectangular limiting plate A402 is inserted into the circular connecting shaft 105 above; the rectangular limiting plate B403 is welded to the bottom of the positioning block 401, and the rectangular limiting plate B403 is inserted into the circular connecting shaft 105 below; Its specific functions are as follows: since the connecting plate B103 is slidably mounted on the outside of the rectangular mounting block 102, it is convenient for the staff to replace the worn hook 2, the two circular connecting shafts 105 and the disc 107; and since the positioning block 401 is slidably mounted on the rectangular mounting block 102, and the rear side of the positioning block 401 is in contact with the connecting plate B103, and the positioning screw 108 is inserted into the positioning block 401, the connecting plate B103 is limited, so that the connecting plate A101 and the connecting plate B103 are more firmly combined; Because the rectangular limit plate A402 is inserted into the upper circular connecting shaft 105, and the rectangular limit plate B403 is inserted into the lower circular connecting shaft 105, the two circular connecting shafts 105 are limited, ensuring that the two circular connecting shafts 105 and the connecting plates A101 and B103 do not rotate, so that all the wear occurs on the hook 2, the two circular connecting shafts 105 and the disc 107, thereby improving the service life of the remaining accessories.

[0033] In the embodiment of the present invention, Figure 2 , Figures 6 to 8As shown, the detection assembly 6 includes: a movable detection head 601, a limit collar E602, a detection spring B603 and a winding rod 604; there are two movable detection heads 601, and the two movable detection heads 601 are slidably installed inside the rectangular mounting block 102; the upper movable detection head 601 contacts the wire rope 3, the lower movable detection head 601 contacts the hook 2, and the two movable detection heads 601 are connected with the rectangular mounting block 102 in a clearance fit; there are two limit collars E602, and the two limit collars E602 are welded On the outside of the two movable detection heads 601; there are two detection springs B603, and the two detection springs B603 are installed on the outside of the two movable detection heads 601, and the two detection springs B603 are set between the rectangular mounting block 102 and the two limit collars E602; the winding rod 604 is welded inside the rectangular mounting block 102; the detection assembly 6 also includes: a U-shaped guide frame 605, a protection rope 606 and a limit collar F607; there are two U-shaped guide frames 605, and the two U-shaped guide frames 605 are welded on the two The two protective ropes 606 are provided with two ends, and one end of the two protective ropes 606 is fixedly installed on the inner side of the two movable detection heads 601; the other ends of the two protective ropes 606 are inserted into the inside of the two U-shaped guide frames 605, and the two protective ropes 606 are wound around the winding rod 604, and the two protective ropes 606 are also in contact with the two tensioning protrusions 505; there are two limit collars F607, and the two limit collars F607 are fixedly installed on the outer ends of the two protective ropes 606; the detection assembly 6 also includes: a battery 6 08. Buzzer alarm 609 and switch 610; battery 608 is fixedly mounted on the rear side of connecting plate A101; buzzer alarm 609 is fixedly mounted on the rear side of connecting plate A101, and battery 608 is electrically connected to buzzer alarm 609; there are two switches 610, and two switches 610 are fixedly mounted on two active detection heads 601, and two switches 610 are electrically connected to battery 608 and buzzer alarm 609; when one of the switches 610 is in a pressed state, buzzer alarm 609 works; Its specific function is: because the upper movable detection head 601 is in contact with the wire rope 3, and the lower movable detection head 601 is in contact with the hook 2, and the two switches 610 are fixedly installed on the two movable detection heads 601, when the upper circular connecting shaft 105 and the disc 107 are severely worn, the upper detection spring B603 pushes the movable detection head 601 to move upward. At this time, the upper switch 610 is in a pressed state, which is convenient for the staff to know that the upper circular connecting shaft 105 and the disc 107 are severely worn; when the lower circular connecting shaft 105 and the hook 2 are severely worn, the lower detection spring B603 pushes the movable detection head 601 to move downward. At this time, the lower switch 610 is in a pressed state, which is convenient for the staff to know that the lower circular connecting shaft 105 and the hook 2 are severely worn, and it is convenient for the staff to replace the severely worn accessories in time, thereby improving the safety of the lifting process.

[0034] In the embodiment of the present invention, Figure 4 As shown, the protection component 5 includes: a mounting bracket 501, a limiting clamp ring B502 and a support wheel 503; there are two mounting brackets 501, and the two mounting brackets 501 are rotatably mounted on the connecting plate A101; there are four limiting clamp rings B502, and the four limiting clamp rings B502 are welded to the outside of the two mounting brackets 501, and the inner sides of the four limiting clamp rings B502 are in contact with the connecting plate A101; there are two support wheels 503, and the two support wheels 503 are rotatably mounted on the two mounting brackets 501, and the two support wheels 503 and the disc 107 are located in the same central plane; the protection component 5 also includes: a limiting clamp ring C504, a tightening protrusion 505 and a U-shaped reset seat 506; there are four limiting clamp rings C504, and the four limiting clamp rings C504 are welded to the outside of the two mounting brackets 501, and the inner sides of the four limiting clamp rings C504 are in contact with the two support wheels 503; the tightening protrusion There are two blocks 505, and the two tensioning protrusions 505 are welded to the outside of the two mounting brackets 501; the U-shaped reset seat 506 is welded to the rear side of the connecting plate A101; the protection component 5 also includes: a circular reset rod 507, a limit clamp D508 and a reset spring A509; there are two circular reset rods 507, and the two circular reset rods 507 are welded to the inside of the U-shaped reset seat 506, and the two circular reset rods 507 are inserted into the inside of the two mounting brackets 501; there are four limit clamps D508, and the four limit clamps D508 are welded to the outside of the two circular reset rods 507, and the inner sides of the four limit clamps D508 are in contact with the two mounting brackets 501; there are four reset springs A509, and the four reset springs A509 are installed on the outside of the two circular reset rods 507, and the four reset springs A509 are located between the U-shaped reset seat 506 and the two mounting brackets 501; Its specific function is as follows: because the two support wheels 503 and the disc 107 are located in the same central plane, and the four reset springs A509 are installed on the outside of the two circular reset rods 507, and the four reset springs A509 are located between the U-shaped reset seat 506 and the two mounting brackets 501, when the hook 2 is not connected to the cargo, the two support wheels 503 support the wire rope 3 under the action of the four reset springs A509. When the hook 2 is connected to the cargo, the wire rope 3 pushes the two support wheels 503 to move inward under the gravity of the cargo, causing the angles of the two mounting brackets 501 to change. In addition, because the two tensioning protrusions 505 are welded to the two mounting brackets 501, and two limit clamps F607 are fixedly installed on the outer ends of the two protection ropes 606, and the two protection ropes 606 are also in contact with the two tensioning protrusions 505. When the angles of the two mounting brackets 501 change, the two tensioning protrusions 505 can tighten the two protection ropes 606, so that the two movable detection heads 601 move at the same time, ensuring that when lifting goods, the two movable detection heads 601 are in a separated state from the hook 2 and the wire rope 3, avoiding the wear of the two movable detection heads 601. Only when separated from the goods, the two movable detection heads 601 will detect the degree of wear of the hook 2, the two circular connecting shafts 105 and the disc 107.

[0035] Among them, the staff can weld two U-shaped limiting brackets on the four limiting clamps C504 to limit the wire rope 3, thereby avoiding the separation of the wire rope 3 and the two supporting wheels 503 and improving the protection effect of the two movable detection heads 601.

[0036] The specific usage and function of this embodiment are as follows: The present invention has a limiting effect on the two circular connecting shafts 105, ensuring that the two circular connecting shafts 105 and the connecting plates A101 and B103 do not rotate, so that the wear all occurs on the hook 2, the two circular connecting shafts 105 and the disc 107, thereby increasing the service life of the remaining accessories; when the upper circular connecting shaft 105 and the disc 107 are severely worn, the upper detection spring B603 pushes the movable detection head 601 to move upwards, at which time, the upper switch 610 is in a pressed state, making it convenient for the staff to know that the upper circular connecting shaft 105 and the disc 107 are severely worn; when the lower circular connecting shaft 105 and the hook 2 are severely worn, the lower detection spring B603 pushes the movable detection head 601 to move downwards, at which time, the lower switch 610 is in a pressed state, making it convenient for the staff to know that the lower circular connecting shaft 105 and the hook 2 are severely worn. , which is convenient for the staff to replace the seriously worn accessories in time, and improves the safety of the lifting process; when the hook 2 is not connected to the cargo, the two support wheels 503 support the steel wire rope 3 under the action of the four reset springs A509; when the hook 2 is connected to the cargo, the steel wire rope 3 pushes the two support wheels 503 to move inward under the gravity of the cargo, so that the angles of the two mounting brackets 501 change; when the angles of the two mounting brackets 501 change, the two tensioning protrusions 505 can tighten the two protection ropes 606, so that the two movable detection heads 601 move at the same time, ensuring that when lifting the cargo, the two movable detection heads 601 are in a separated state from the hook 2 and the steel wire rope 3, avoiding the wear of the two movable detection heads 601; only when separated from the cargo, the two movable detection heads 601 will detect the wear degree of the hook 2, the two circular connecting shafts 105 and the disc 107; When the hook 2, the two circular connecting shafts 105 and the disc 107 need to be replaced, the staff rotates the positioning screw 108 counterclockwise to separate the positioning screw 108 from the positioning block 401, and then separates the connecting plate B103 from the rectangular mounting block 102, and then replaces the hook 2, the two circular connecting shafts 105 and the disc 107. After the replacement is completed, the staff slides the connecting plate B103 on the outside of the rectangular mounting block 102, and then inserts the rectangular limit plate A402 on the upper circular connecting shaft 105, inserts the rectangular limit plate B403 on the lower circular connecting shaft 105, and then rotates the positioning screw 108 clockwise to insert the positioning screw 108 into the positioning block 401.

[0037] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0038] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0039] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A lifting pulley, comprising a pulley assembly (1), a positioning assembly (4), a protection assembly (5) and a detection assembly (6); a hook (2) and a steel wire rope (3) are mounted on the pulley assembly (1); the characteristics are: The positioning assembly (4) is mounted on the pulley assembly (1), and the positioning assembly (4) is used to position the assembled pulley assembly (1); The detection component (6) is mounted on the pulley component (1), and the detection component (6) is used to detect the degree of wear of the pulley component (1); The protection component (5) is mounted on the pulley component (1), and the protection component (5) is used to protect the detection component (6); The pulley assembly (1) comprises: a connecting plate A (101), a rectangular mounting block (102) and a connecting plate B (103); the rectangular mounting block (102) is welded to the front side of the connecting plate A (101), and the front side of the rectangular mounting block (102) is provided with a chamfer; the connecting plate B (103) is slidably mounted on the outside of the rectangular mounting block (102).

2. A lifting pulley according to claim 1, characterized in that: The pulley assembly (1) further comprises: a positioning frame (104), a circular connecting shaft (105) and a limiting clamp ring A (106); the positioning frame (104) is welded to the outside of the rectangular mounting block (102), and the front side of the positioning frame (104) contacts the connecting plate B (103); there are two circular connecting shafts (105) in total, and the two circular connecting shafts (105) are mounted on the connecting plate A (101) and the connecting plate B (103); there are four limiting clamp rings A (106) in total, and the four limiting clamp rings A (106) are welded to the outside of the two circular connecting shafts (105), and the outer sides of the four limiting clamp rings A (106) contact the connecting plate A (101) and the connecting plate B (103).

3. A lifting pulley according to claim 2, characterized in that: The pulley assembly (1) further comprises: a disc (107) and a positioning screw (108); the disc (107) is rotatably mounted on the upper circular connecting shaft (105); and the positioning screw (108) is threadedly connected to the rectangular mounting block (102).

4. A lifting pulley according to claim 3, characterized in that: The positioning assembly (4) comprises: a positioning block (401), a rectangular limiting plate A (402) and a rectangular limiting plate B (403); the positioning block (401) is slidably mounted on the rectangular mounting block (102), and a chamfer is provided on the right side of the positioning block (401); the rear side of the positioning block (401) contacts the connecting plate B (103), and a positioning screw (108) is inserted into the positioning block (401); the rectangular limiting plate A (402) is welded to the top of the positioning block (401), and the rectangular limiting plate A (402) is inserted into the circular connecting shaft (105) above; the rectangular limiting plate B (403) is welded to the bottom of the positioning block (401), and the rectangular limiting plate B (403) is inserted into the circular connecting shaft (105) below.

5. A lifting pulley according to claim 3, characterized in that: The protection assembly (5) comprises: a mounting bracket (501), a limiting clamp ring B (502) and a supporting wheel (503); two mounting brackets (501) are provided, and the two mounting brackets (501) are rotatably mounted on the connecting plate A (101); four limiting clamp rings B (502) are provided, and the four limiting clamp rings B (502) are welded to the outside of the two mounting brackets (501), and the inner sides of the four limiting clamp rings B (502) are in contact with the connecting plate A (101); two supporting wheels (503) are provided, and the two supporting wheels (503) are rotatably mounted on the two mounting brackets (501), and the two supporting wheels (503) and the disc (107) are located on the same central plane.

6. A lifting pulley according to claim 5, characterized in that: The protection assembly (5) further comprises: a limit collar C (504), a tensioning protrusion (505) and a U-shaped reset seat (506); a total of four limit collars C (504) are provided, and the four limit collars C (504) are welded to the outside of the two mounting brackets (501), and the inner sides of the four limit collars C (504) are in contact with the two support wheels (503); a total of two tensioning protrusions (505) are provided, and the two tensioning protrusions (505) are welded to the outside of the two mounting brackets (501); and the U-shaped reset seat (506) is welded to the rear side of the connecting plate A (101).

7. A lifting pulley according to claim 6, characterized in that: The protection assembly (5) further comprises: a circular reset rod (507), a limit clamp ring D (508) and a reset spring A (509); two circular reset rods (507) are provided, and the two circular reset rods (507) are welded inside the U-shaped reset seat (506), and the two circular reset rods (507) are inserted inside the two mounting brackets (501); four limit clamp rings D (508) are provided, and the four limit clamp rings D (508) are welded outside the two circular reset rods (507), and the inner sides of the four limit clamp rings D (508) are in contact with the two mounting brackets (501); four reset springs A (509) are provided, and the four reset springs A (509) are installed outside the two circular reset rods (507), and the four reset springs A (509) are located between the U-shaped reset seat (506) and the two mounting brackets (501).

8. A lifting pulley according to claim 6, characterized in that: The detection assembly (6) comprises: a movable detection head (601), a limit collar E (602), a detection spring B (603) and a winding rod (604); two movable detection heads (601) are provided, and the two movable detection heads (601) are slidably mounted inside the rectangular mounting block (102); the upper movable detection head (601) contacts the steel wire rope (3), the lower movable detection head (601) contacts the hook (2), and there is a gap between the two movable detection heads (601) and the rectangular mounting block (102). The two limit collars E (602) are provided in total, and the two limit collars E (602) are welded to the outside of the two movable detection heads (601); the two detection springs B (603) are provided in total, and the two detection springs B (603) are installed on the outside of the two movable detection heads (601), and the two detection springs B (603) are arranged between the rectangular mounting block (102) and the two limit collars E (602); the winding rod (604) is welded to the inside of the rectangular mounting block (102).

9. A lifting pulley according to claim 8, characterized in that: The detection assembly (6) further comprises: a U-shaped guide frame (605), a protection rope (606) and a limit clamp ring F (607); two U-shaped guide frames (605) are provided, and the two U-shaped guide frames (605) are welded to two mounting brackets (501); two protection ropes (606) are provided, and one end of the two protection ropes (606) is fixedly mounted on the inner side of the two movable detection heads (601); the other ends of the two protection ropes (606) are inserted into the interior of the two U-shaped guide frames (605), and the two protection ropes (606) are wound around the winding rod (604), and the two protection ropes (606) are also in contact with the two tensioning protrusions (505); two limit clamp rings F (607) are provided, and the two limit clamp rings F (607) are fixedly mounted on the outer ends of the two protection ropes (606).

10. A lifting pulley according to claim 9, characterized in that: The detection assembly (6) further comprises: a battery (608), a buzzer alarm (609) and a switch (610); the battery (608) is fixedly mounted on the rear side of the connection plate A (101); the buzzer alarm (609) is fixedly mounted on the rear side of the connection plate A (101), and the battery (608) is electrically connected to the buzzer alarm (609); a total of two switches (610) are provided, and the two switches (610) are fixedly mounted on the two movable detection heads (601), and the two switches (610) are electrically connected to the battery (608) and the buzzer alarm (609); when one of the switches (610) is in a pressed state, the buzzer alarm (609) operates.

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