Novel electric chain hoist
By using a modular design and an independent load-limiting mechanism, the electric chain hoist solves the problems of low maintenance efficiency and the influence of the motor on the load-limiting mechanism of existing electric hoists, enabling rapid adjustment and efficient maintenance, and improving the stability and safety of the equipment.
Patent Information
- Application Number
- CN202423282933.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing electric hoists are inefficient to maintain and repair. The load limiting mechanism is affected by motor dust and heat, requiring frequent adjustment of parts, which is costly. Furthermore, replacement requires opening the motor's internal components.
Design a modular electric chain hoist with a load limiting mechanism independently located outside the gearbox, an adjustment device inside the first pinion shaft, and detachable components. The load limiting is adjusted via load limiting friction plates and the adjustment device. The gearbox performs three-stage reduction, the hook assembly can rotate 360 degrees, and the motor and parts are isolated from each other for dust protection.
It enables quick assembly, disassembly, and replacement of components, avoids the impact of motor dust and heat on the load limiting mechanism, improves the stability and safety of the equipment, reduces the failure rate, and extends its service life.
Smart Images
Figure CN223813309U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hoisting machinery technical field more specifically relates to a novel ring chain electric hoist. BACKGROUND
[0002] In the fields of stage erection, factory, mine, port and the like, part products need to be lifted, and need to use hoist or electric hoist, and the hoist or electric hoist generally needs to use installation load limiting mechanism.
[0003] At present, electric hoist is widely used in industrial production, but the existing electric hoist has many deficiencies. After the assembly of various parts is completed, the associated other components are connected together, if maintenance or repair is needed, the associated other components need to be removed, after maintenance or repair is completed, the mutual position and precision are reassembled and adjusted, which is low in efficiency and high in cost. At the same time, if the load limiting mechanism is directly installed in the motor, the dust and heat generated after the motor operates can affect the correctness of the load limiting, and when the load limiting mechanism is replaced and adjusted, the motor needs to be opened to perform relevant operations, and after the operation is completed, the position relationship of various parts needs to be reinstalled and adjusted, which is time-consuming and laborious and low in efficiency. UTILITY MODEL CONTENTS
[0004] The utility model aims at the deficiencies of prior art and provides a novel ring chain electric hoist which is reasonable in structure and convenient to adjust.
[0005] A novel ring chain electric hoist, comprising a reduction gearbox and a hook assembly, the reduction gearbox and the hook assembly are fixed through a machine body, the reduction gearbox is provided with a first pinion shaft, the first pinion shaft is hollow in structure; the hook assembly is arranged above the machine body, the reduction gearbox is arranged at the front side of the machine body, a load limiting mechanism is arranged outside the reduction gearbox; an adjusting device for adjusting the load limiting mechanism is arranged in the first pinion shaft, a power source on the reduction gearbox is fixed at the rear side of the machine body, a load bearing assembly is arranged on the machine body and connected with the reduction gearbox; the reduction gearbox, the load limiting mechanism, the hook assembly, the adjusting device and the load bearing assembly are relatively independently and detachably arranged.
[0006] The utility model is reasonable in structure, the modularization is realized through the arrangement of the machine body, and the fixing, dismounting and replacement of various components and mechanisms are facilitated. The load limiting mechanism is not affected by the dust and heat generated after the motor operates, and the position and transmission relationship of the reduction gearbox and various related parts do not need to be adjusted after replacement.
[0007] As further improvement and supplement to the above-mentioned scheme, the utility model further comprises the following additional technical features:
[0008] The load limiting mechanism comprises a load limiting friction plate seat A, a load limiting friction plate seat B and a load limiting friction plate arranged in the middle.
[0009] The adjusting device comprises a load limiting limiting rod, a load limiting spring seat and a load limiting spring arranged in the inner cavity of the first pinion shaft, a load limiting spring washer, a pin shaft and a load limiting top pressing sleeve arranged outside the load limiting spring.
[0010] The reduction gearbox further comprises a first gear wheel on the second pinion shaft, a second gear wheel on the third pinion shaft and a third gear wheel on the chain wheel shaft.
[0011] The chain wheel shaft is provided with a triangular transmission section, which is reasonable in structure, simple in processing, convenient in disassembly and assembly and resistant to impact.
[0012] The first pinion shaft is provided with a first bearing and a second bearing on both sides, the second pinion shaft is provided with a third bearing on each side, the third pinion shaft is provided with a fourth bearing, and the chain wheel shaft is provided with a fifth bearing.
[0013] The load bearing assembly comprises a chain wheel arranged on the transmission section, a chain guide plate on the chain wheel and a chain guide frame below the chain wheel.
[0014] The hook assembly comprises a hook, a hook plate, a clasp ring and a retaining ring, the clasp ring is a split stepped structure, the retaining ring is pressed on the clasp ring, and the lifting force is transmitted to the machine body.
[0015] The first pinion shaft is provided with a brake, which can brake or decelerate.
[0016] The power source comprises a motor and an electric appliance box outside the motor.
[0017] The utility model discloses can reach following beneficial effect: the utility model discloses reasonable structure, and adjustment is convenient and fast. Through the setting of organism, the modular setting is realized, and the fixing, dismounting and replacement of various components and mechanisms are facilitated. And the load limiting mechanism is not influenced by the dust and heat generated after motor operation, and after replacement, the position and transmission relation of reduction gearbox and various relevant parts do not need to be readjusted. Ensure that the electric hoist runs in the safe load range, improve the stability, reliability and safety of equipment operation, prolong the service life of equipment. Effectively prevent the occurrence of overload, reduce the equipment failure rate. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the structure schematic diagram of the utility model.
[0019] Figure 2 It is the structure schematic diagram of the utility model in removing gear box cover 9.
[0020] Figure 3 It is the structure schematic diagram of the utility model in removing electric appliance box cover 10.
[0021] Figure 4 It is the front view of the utility model (after removing gear box cover 9).
[0022] Figure 5 It is the plan view of the utility model (after removing gear box cover 9).
[0023] Figure 6 It is the left view of the utility model (after removing gear box cover 9).
[0024] Figure 7 It is the structure schematic diagram of the utility model in Figure 5 The local enlarged view of place A shown in figure.
[0025] Figure 8 It is the structure schematic diagram of the utility model in lifting hook assembly 5.
[0026] Figure 9 It is the structure schematic diagram of the utility model in bearing assembly 9.
[0027] Figure 10 It is the structure schematic diagram of the utility model in chain wheel shaft 313.
[0028] Figure 11 It is the front view of the utility model in chain wheel shaft 313.
[0029] Figure 12 It is the plan view of the utility model in chain wheel shaft 313.
[0030] In the drawing:
[0031] 1, body 2, load limiting mechanism 21, load limiting friction plate seat A 22, load limiting friction plate seat B 23, load limiting friction plate 3, reduction box 31, reduction box body 32, reduction box cover 33, first bearing 34, first pinion shaft 35, second bearing 36, second pinion shaft 37, first gear 38, third bearing 39, fourth bearing 310, second gear 311, third pinion shaft 312, third gear 313, sprocket shaft 314, fifth bearing 4, brake 5, hook assembly 51, hook 52, hanging plate 53, snap ring 54, retainer 6, motor 7, electrical box 8, electrical assembly 9, load bearing assembly 91, sprocket 92, chain guide plate 93, chain guide frame 10, gear box cover 11, electrical box cover DETAILED DESCRIPTION
[0032] The specific embodiments of the utility model will be described in detail below with reference to the accompanying drawings.
[0033] As Figures 1-12 shown, the utility model is a novel ring chain electric hoist.
[0034] The novel ring chain electric hoist described in the embodiment comprises a reduction box 3 and a hook assembly 5, the hook assembly 5 is used for hoisting, the reduction box 3 and the hook assembly 5 are fixed through the body 1. The reduction box 3 is provided with a first pinion shaft 34, the first pinion shaft 34 is a hollow structure; the hook assembly 5 is arranged above the body 1, the reduction box 3 is arranged at the front side of the body 1, and the load limiting mechanism 2 is arranged outside the reduction box 3; an adjusting device for adjusting the load limiting mechanism 2 is arranged in the first pinion shaft 34, a power source on the reduction box 3 is fixed at the rear side of the body 1, and a load bearing assembly 9 is arranged on the body 1 and connected with the reduction box 3; the reduction box 3, the load limiting mechanism 2, the hook assembly 5, the adjusting device and the load bearing assembly 9 are all arranged relatively independently and detachably.
[0035] Through the arrangement of the body 1, modularization is realized, and the fixing, assembly and disassembly and replacement of various components and mechanisms are facilitated.
[0036] Further, the load limiting mechanism 2 comprises a load limiting friction plate seat A 21 and a load limiting friction plate seat B 22, and a load limiting friction plate 23 is arranged in the middle; the reduction box 3 comprises a reduction box body 31, the reduction box 3 is covered by a reduction box cover 32, a first pinion shaft 34, a second pinion shaft 36, a third pinion shaft 311 and a sprocket shaft 313 are arranged in the reduction box body, the first pinion shaft 34, the second pinion shaft 36, the third pinion shaft 311 and the sprocket shaft 313 are arranged in intervals and staggered, and the space occupation is small. The first pinion shaft 34 is connected to the power source, power is input, and the power is output by the sprocket shaft 313.
[0037] Further, the adjusting device comprises a limiting top rod 24, a load limiting spring seat 25 and a load limiting spring 26 arranged in the inner cavity of the first pinion shaft 34, a load limiting spring washer 27 outside the load limiting spring 26, a pin shaft 28 and a load limiting top sleeve 29. The limiting top rod 24 abuts against the load limiting friction plate seat B 22, the load limiting spring seat 25 is attached to the limiting top rod 24, the load limiting spring 26 is sleeved on the load limiting spring seat 25, one end of the load limiting spring 26 abuts against the load limiting spring washer 27, the pin shaft 28 is pressed on the load limiting spring washer 27, and the load limiting top sleeve 29, a nut and a circlip are arranged on the pin shaft 28. The position of the pin shaft 28 is adjusted, that is, the friction force of the limiting top rod 24 abutting against the load limiting friction plate seat B 22 is adjusted.
[0038] Further, the speed reducer 3 further comprises a first gear 37 on the second pinion shaft 36, a second gear 310 on the third pinion shaft 311 and a third gear 312 on the chain wheel shaft 313. The first gear 37 is engaged with the gear on the first pinion shaft 34, the second gear 310 is engaged with the gear on the second pinion shaft 36, and the third gear 312 is engaged with the gear on the third pinion shaft 311. Through three-stage speed reduction, the speed output on the chain wheel shaft 313 reaches the use requirement.
[0039] Further, the chain wheel shaft 313 is provided with a triangular transmission section 3131 to output power.
[0040] Further, the first pinion shaft 34 is provided with a first bearing 33 and a second bearing 35 on both sides, the second pinion shaft 36 is provided with a third bearing 38 on both sides, the third pinion shaft 311 is provided with a fourth bearing 39, and the chain wheel shaft 313 is provided with a fifth bearing 314.
[0041] Further, the load bearing assembly 9 comprises a chain wheel 91 arranged on the transmission section 3131, a chain guide plate 92 above the chain wheel 91 and a chain guide bracket 93 below the chain wheel 91. The chain guide plate 92 and the chain guide bracket 93 guide the chain during output, ensuring the straight-line movement of the chain.
[0042] Further, the hook assembly 5 comprises a hook 51, a hook plate 52, a clasp ring 53 and a retaining ring 54. The clasp ring 53 is a split stepped structure, and the retaining ring 54 is pressed on the clasp ring 53 to transmit the hoisting force to the machine body 1. The clasp ring 53 and the retaining ring 54 are sleeved on the hook 51, the hook plate 52 has a waist-shaped groove to limit the clasp ring 53 and the retaining ring 54, the two oppositely attached hook plates 52 fix the hook 51, the clasp ring 53 and the retaining ring 54, and the shaft parts at both ends of the hook plate 52 are fixed to the machine body 1.
[0043] Further, the first pinion shaft 34 is provided with a brake 4 arranged on the outer side of the speed reducer 3.
[0044] Further, the power source comprises the motor 6 and an electric appliance box 7 outside the motor 6, and the electric appliance box 7 is provided with electric appliance components 8 for controlling the whole electric hoist.
[0045] The machine body 1 is provided with a gear box cover 10 outside, and the electric appliance box 7 is provided with an electric appliance box cover 11 outside. The whole is covered, and all parts are covered to prevent dust and prolong the service life.
[0046] When the new electric hoist is used, the gear numbers of the first big gear 37, the second big gear 310 and the third big gear 312 are matched according to the speed requirement in the reduction box 3, and then the tightness of the pin shaft 28 is adjusted according to the load limit requirement, i.e. the number of times of the power cannot be exceeded.
[0047] After the installation of all components is completed, the pin shaft is adjusted, and then the adjustment is locked by a nut.
[0048] When the parts are replaced or maintained, only the corresponding parts need to be replaced, and other parts do not need to be removed, so that the efficiency is improved.
[0049] The above is the preferred embodiment of the utility model, and does not limit the protection scope of the utility model. The deformation and improvement of the utility model according to the design idea of the utility model should be considered as the protection scope of the utility model.
Claims
1. A new type of electric chain hoist comprising a reduction gearbox (3) and a hook assembly (5), characterized in that: The speed reducer (3) and the hook assembly (5) are fixed to the body (1), the speed reducer (3) is provided with a first pinion shaft (34) which is hollow, the hook assembly (5) is arranged above the body (1), the speed reducer (3) is arranged at the front side of the body (1), the load limiting mechanism (2) is arranged at the outer side of the speed reducer (3), the adjusting device for adjusting the load limiting mechanism (2) is arranged in the first pinion shaft (34), the power source on the speed reducer (3) is fixed to the rear side of the body (1), the load bearing assembly (9) is arranged on the body (1) and connected with the speed reducer (3), and the speed reducer (3), the load limiting mechanism (2), the hook assembly (5), the adjusting device and the load bearing assembly (9) are arranged independently and detachably.
2. The new type of electric chain hoist according to claim 1, characterized in that: The load limiting mechanism (2) comprises a load limiting friction plate seat A (21), a load limiting friction plate seat B (22) and a load limiting friction plate (23) arranged in the middle, the speed reducer (3) comprises a speed reducer body (31), a second pinion shaft (36), a third pinion shaft (311) and a sprocket shaft (313) arranged in the speed reducer body, the first pinion shaft (34) is connected to the power source to input power, and the power is output by the sprocket shaft (313).
3. The new type of electric chain hoist with a ring chain according to claim 1, characterized in that: The adjusting device comprises a limiting cutting top rod (24), a load limiting spring seat (25) and a load limiting spring (26) arranged in the inner cavity of the first pinion shaft (34), a load limiting spring washer (27) arranged at the outer side of the load limiting spring (26), a pin shaft (28) and a load limiting top tightening sleeve (29).
4. The new type of electric chain hoist with a ring chain according to claim 2, characterized in that: The speed reducer (3) further comprises a first gear wheel (37) on the second pinion shaft (36), a second gear wheel (310) on the third pinion shaft (311) and a third gear wheel (312) on the sprocket shaft (313).
5. The new type of electric chain hoist with a ring chain according to claim 4, characterized in that: The sprocket shaft (313) is provided with a triangular transmission section (3131).
6. The new type of electric chain hoist with a ring chain according to claim 2, characterized in that: First bearings (33) and second bearings (35) are arranged on both sides of the first pinion shaft (34), third bearings (38) are arranged on both sides of the second pinion shaft (36), a fourth bearing (39) is arranged on the third pinion shaft (311) and a fifth bearing (314) is arranged on the sprocket shaft (313).
7. The new type of electric chain hoist with a ring chain according to claim 5, characterized in that: The load bearing assembly (9) comprises a sprocket (91) arranged on the transmission section (3131), a chain guide plate (92) arranged above the sprocket (91) and a chain guide frame (93) arranged below the sprocket (91).
8. The new type of electric chain hoist with a ring chain according to claim 1, characterized in that: The hook assembly (5) comprises a hook (51), a hook plate (52), a clasp ring (53) and a retaining ring (54), the clasp ring (53) is a split stepped structure, the retaining ring (54) is pressed on the clasp ring (53) to transmit the hoisting force to the body (1).
9. The new type of electric chain hoist with a ring chain according to claim 1, characterized in that: The first pinion shaft (34) is provided with a brake (4).
10. The new type of electric chain hoist with a ring chain according to claim 1, characterized in that: The power source comprises a motor (6) and an electric box (7) arranged at the outer side of the motor (6).