Electrical linkage lifting device

Abstract

The utility model relates to an electrical linkage lifting device which comprises a base frame, a pedal assembly, a holding assembly and a lifting assembly, the pedal assembly is installed on the base frame and comprises a pedal, a connecting rod, a collision plate and an electrical switch, one end of the collision plate is connected with the pedal, and the other end of the collision plate is matched with the electrical switch; one end of the connecting rod is connected with the pedal, the other end of the connecting rod is connected with the enclasping assembly, the enclasping assembly comprises an enclasping hoop and an eccentric shaft, the eccentric shaft is rotationally arranged on one side of the enclasping hoop, one end of the eccentric shaft is rotationally connected with the connecting rod, and the other end of the eccentric shaft makes contact with the outer side wall of the enclasping hoop; the lifting assembly comprises a lifting cylinder and an electric lifting motor, the lifting cylinder is clamped in the holding hoop, the electric lifting motor is connected with the lifting cylinder, and the electric lifting motor is electrically connected with the electric switch. The device has the effects of effectively locking the lifting cylinder, improving the stability of the lifting cylinder and effectively preventing the electric lifting motor from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lifting devices, in particular to an electrical linkage lifting device. BACKGROUND

[0002] In daily life, the common lifting devices are lifting columns and lifting platforms. Among them, the lifting column is widely used because of its beautiful appearance. However, in the process of long-term use, due to frequent lifting actions and large lateral loads, the limiting blocks between the levels of the lifting column will gradually wear out, thereby affecting the lifting effect. In addition, when the lifting device bears a large load, due to the limitation of structure size processing and assembly precision, slight shaking and deviation are prone to occur, and with the increase of height, the shaking will be more and more obvious. In some special scenarios, such as the medical instrument field, such shaking and deviation are absolutely not allowed, because the shaking caused by unstable structure may lead to unpredictable serious consequences during treatment. The lifting platform is not suitable for narrow working environment because of its large size due to functional characteristics. CONTENT OF THE UTILITY MODEL

[0003] In order to improve the stability of the lifting device and prevent damage to the electric lifting motor caused by electrical misoperation, the present application provides an electrical linkage lifting device.

[0004] The electrical linkage lifting device provided by the present application adopts the following technical scheme:

[0005] An electrical linkage lifting device, comprising a base frame, a pedal assembly, a clamping assembly and a lifting assembly, the pedal assembly is installed on the base frame, the clamping assembly is installed above the base frame, and the lifting assembly is installed in the middle of the clamping assembly; the pedal assembly comprises a pedal, a connecting rod, a collision plate and an electrical switch, one end of the collision plate is connected with the pedal, the other end is matched with the electrical switch, one end of the connecting rod is connected with the pedal, and the other end is connected with the clamping assembly, the clamping assembly comprises a clamping hoop and an eccentric shaft, the eccentric shaft is rotatably arranged on one side of the clamping hoop, one end of the eccentric shaft is rotatably connected with the connecting rod, and the other end is in contact with the outer wall of the clamping hoop; the lifting assembly comprises a lifting cylinder and an electric lifting motor, the lifting cylinder is clamped in the clamping hoop, the electric lifting motor is connected with the lifting cylinder, and the electric lifting motor is electrically connected with the electrical switch.

[0006] Optionally, the pedal assembly comprises a long shaft, the long shaft is rotatably arranged on the base frame, and the pedal is provided with two groups, and the two groups of pedals are fixed on both ends of the long shaft.

[0007] Optionally, the clamping assembly comprises a movable arm, the movable arm is fixedly arranged on the end of the eccentric shaft away from the clamping hoop, and the end of the movable arm away from the eccentric shaft is rotatably connected with the top end of the connecting rod.

[0008] Optionally, the embracing assembly comprises a fixed plate, one end of the fixed plate is connected with the embracing hoop, and the other end is rotatably connected with the eccentric shaft.

[0009] Optionally, an adjusting screw is arranged at the end of the fixed plate away from the eccentric shaft, and the adjusting screw is used to adjust the position of the fixed plate relative to the embracing hoop.

[0010] Optionally, an upper limiting pin is arranged on the embracing hoop, and a lower limiting pin is arranged on the fixed plate, and the movable arm is located between the upper limiting pin and the lower limiting pin.

[0011] Optionally, an upper groove and a lower groove are respectively arranged on the upper top of the movable arm and the lower bottom of the movable arm, and the upper groove and the lower groove are embedded with the upper limiting pin and the lower limiting pin.

[0012] Optionally, an extension arm is arranged at the opening and closing end of the embracing hoop, a clamping groove is arranged on the outer wall of the extension arm, and the fixed plate is embedded in the clamping groove.

[0013] Optionally, a sliding groove is arranged on the fixed plate, the direction in which the sliding groove is arranged is consistent with the length direction of the fixed plate, and a screw is arranged in the sliding groove, and the screw connects the extension arm and the fixed plate.

[0014] Optionally, a compression bearing is arranged at one end of the eccentric shaft, a backing plate is fixed on the side wall of the extension arm close to the compression bearing, and the compression bearing is in abutment with the backing plate.

[0015] In summary, the present application has at least one of the following beneficial technical effects:

[0016] 1. The device uses the structural dead point of the eccentric shaft to lock the lifting barrel, and the lifting cylinder is stable and reliable during the lifting and lowering process.

[0017] 2. The device is provided with an electrical linkage device, when the lifting cylinder is in the locked state, the electrical switch and the electric lifting motor are in the open circuit state, and the electrical control system cannot control the action of the electric lifting motor, which can effectively avoid the damage of the electric lifting motor.

[0018] 3. The device uses a flip plate type pedal, which can clearly distinguish the locking or loosening state of the lifting barrel. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the embodiment.

[0020] Figure 2 is a schematic diagram of the structure of another view of the embodiment.

[0021] Figure 3 is an exploded view of the embracing assembly in the embodiment.

[0022] Explanation of reference signs: 1, base frame; 11, frame; 12, mounting plate; 13, stand column; 14, ground foot; 2, pedal assembly; 21, pedal; 22, long shaft; 23, swing arm; 24, collision plate; 25, connecting rod; 26, electrical switch; 3, embracing assembly; 31, embracing hoop; 311, extending arm; 32, movable arm; 321, upper groove; 322, lower groove; 33, eccentric shaft; 34, fixing plate; 341, groove; 342, adjusting screw; 35, compression bearing; 36, gasket; 37, upper limiting pin; 38, lower limiting pin; 4, lifting assembly; 41, lifting cylinder; 42, electric lifting motor. DETAILED DESCRIPTION

[0023] The following will be described in detail with reference to the accompanying drawings. Figures 1-3 The present application is further described in detail.

[0024] The present application discloses an electrical linkage lifting device. Referring to Figure 1 , the lifting device comprises a base frame 111, a pedal 21 assembly 2, an embracing assembly 3 and a lifting assembly 4, the pedal 21 assembly 2 is installed on the base frame 111, the pedal 21 assembly 2 comprises a connecting rod 25, the pedal 21 assembly 2 is connected with the embracing assembly 3 through the connecting rod 25, and the lifting assembly 4 is arranged in the middle of the embracing assembly 3.

[0025] The base frame 111 comprises a frame 11, the frame 11 is provided with a ground foot 14 at the bottom and is placed on the ground, the frame 11 further comprises a mounting plate 12 and a stand column 13, the mounting plate 12 is horizontally fixed to the frame 11, the stand column 13 is vertically fixed to one end of the mounting plate 12, and the embracing assembly 3 is installed at the top end of the stand column 13. The lifting assembly 4 comprises a lifting cylinder 41 and an electric lifting motor 42, the electric lifting motor 42 is installed on the mounting plate 12, the top end of the electric lifting motor 42 is connected with the bottom of the lifting cylinder 41, and the lifting cylinder 41 is used to support the lifting cylinder 41 to rise or fall.

[0026] The pedal 21 assembly 2 comprises the pedal 21, the long shaft 22, the swing arm 23, the connecting rod 25 and the electrical switch 26, installation holes are formed in the opposite two side walls of the frame 11, the long shaft 22 is rotationally arranged in the installation holes, the pedal 21 is provided in two groups, and the two groups of pedals 21 are fixed to the two ends of the long shaft 22. One end of the swing arm 23 is fixed to the long shaft 22, the swing arm 23 is provided with the collision plate 24 at the end close to the long shaft 22, the electrical switch 26 is arranged on the stand column 13, one end of the collision plate 24 away from the long shaft 22 is matched with the electrical switch 26, and the electrical switch 26 is electrically connected with the electric lifting motor 42. The end of the swing arm 23 away from the collision plate 24 is rotationally connected with the connecting rod 25, and the other end of the connecting rod 25 is connected with the embracing assembly 3.

[0027] Referring to Figure 2, the holding assembly 3 comprises a holding hoop 31, a movable arm 32 and an eccentric shaft 33, the holding hoop 31 is fixed to the top end of the stand 13, the lifting cylinder 41 is clamped in the holding hoop 31, in particular, two extension arms 311 are arranged at the opening and closing end of the holding hoop 31, the eccentric shaft 33 is rotationally arranged on the outer side wall of the extension arm 311, the axial extension direction of the eccentric shaft 33 is consistent with the extension direction of the extension arm 311, one end of the movable arm 32 is rotationally connected with the end of the connecting rod 25 away from the swing arm 23, the other end is connected with the end of the eccentric shaft 33 away from the stand 13, the end of the eccentric shaft 33 close to the stand 13 is sleeved with a compression bearing 35, the compression bearing 35 can abut against the outer side wall of the extension arm 311. The foot pedal 21 can be stepped on, the swing arm 23 drives the connecting rod 25 to pull down the movable arm 32, the holding force received by the pedal 21 is transmitted to the eccentric shaft 33, the compression bearing 35 is extruded to the extension arm 311 to reach the dead point position, so as to lock the lifting cylinder 41; at this time, the impact plate 24 is in contact with the electrical switch 26, the electrical switch 26 is in an open circuit state with the electric lifting motor 42, and the electrical control system cannot control the electric lifting motor 42 to act. When it is necessary to unlock the lifting cylinder 41, the foot pedal 21 can be stepped on, the impact plate 24 is away from the electrical switch 26, and at the same time, the swing arm 23, the connecting rod 25, the movable arm 32 and the eccentric shaft 33 are driven to be away from the dead point position, so that the holding hoop 31 can unlock the lifting cylinder 41, and at the same time, the electrical control system can control the electric lifting motor 42 to adjust the height of the lifting cylinder 41. By using the structural dead point to lock the lifting cylinder 41, the lifting cylinder 41 is stable and reliable; by arranging the electrical linkage, the damage of the electric lifting motor 42 can be effectively avoided; in addition, the hinged plate type pedal 21 is used, so that the locking or unlocking state of the lifting cylinder can be clearly distinguished.

[0028] With reference to Figure 3 , the holding assembly 3 further comprises a fixed plate 34, the eccentric shaft 33 is installed on the fixed plate 34, the fixed plate 34 is vertically arranged between the movable arm 32 and the compression bearing 35, one end of the extension arm 311 is provided with a clamping groove, the fixed plate 34 is embedded in the clamping groove, the fixed plate 34 is provided with a sliding groove, the opening direction of the sliding groove is consistent with the length extension direction of the fixed plate 34, in the embodiment, two sliding grooves are provided, the two sliding grooves are arranged in parallel, a screw is arranged in the sliding groove, and the fixed plate 34 can be fixed on the extension arm 311. The end of the fixed plate 34 away from the eccentric shaft 33 is provided with an adjusting screw 342, in combination with the holding condition of the holding hoop 31, the adjusting screw 342 can adjust the position of the fixed plate 34, so that the demand for holding force after long-term use and wear can be met. The side wall of the extension arm 311 close to the compression bearing 35 is provided with a pad, the compression bearing 35 is in contact with the pad, the locking force is transmitted to the extension arm 311, so that the lifting cylinder 41 is held.

[0029] In addition, the one end of the extending arm 311 is provided with an upper limiting pin 37, the fixed plate 34 is provided with a lower limiting pin 38, the movable arm 32 is located between the upper limiting pin 37 and the lower limiting pin 38, and the upper and lower portions of the movable arm 32 are provided with upper and lower recesses 341321 and 341322. When the lifting cylinder 41 is gripped, the eccentric shaft 33 has the maximum eccentricity, at this time, the lower limiting pin 38 is embedded in the lower recess 341322, the eccentric shaft 33 is limited at the maximum eccentricity position, which is the dead point of the mechanism, the eccentric shaft 33 will not be deflected without external force, and the stability of the lifting cylinder 41 is further improved.

[0030] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electrical linkage hoist characterized by: The application relates to a pedal device, which comprises a base frame, a pedal assembly, a holding assembly and a lifting assembly, wherein the pedal assembly is installed on the base frame, the holding assembly is installed above the base frame, and the lifting assembly is installed in the holding assembly; the pedal assembly comprises a pedal, a connecting rod, a collision plate and an electrical switch, one end of the collision plate is connected with the pedal, the other end of the collision plate is matched with the electrical switch, one end of the connecting rod is connected with the pedal, and the other end of the connecting rod is connected with the holding assembly; the holding assembly comprises a holding hoop and an eccentric shaft, the eccentric shaft is rotatably arranged on one side of the holding hoop, one end of the eccentric shaft is rotatably connected with the connecting rod, and the other end of the eccentric shaft is in contact with the outer wall of the holding hoop; the lifting assembly comprises a lifting cylinder and an electric lifting motor, the lifting cylinder is clamped in the holding hoop, the electric lifting motor is connected with the lifting cylinder, and the electric lifting motor is electrically connected with the electrical switch.

2. An electrical linkage lift as claimed in claim 1 wherein: The pedal assembly comprises a long shaft, and the long shaft is rotatably arranged on the base frame; the pedal is provided with two groups, and the two groups of pedals are respectively fixed on the two ends of the long shaft.

3. An electrical linkage lift as claimed in claim 1 wherein: The holding assembly comprises a movable arm, the movable arm is fixedly arranged on the end of the eccentric shaft away from the holding hoop, and the end of the movable arm away from the eccentric shaft is rotatably connected with the top end of the connecting rod.

4. An electrical linkage lift as claimed in claim 3 wherein: The holding assembly comprises a fixed plate, one end of the fixed plate is connected with the holding hoop, and the other end of the fixed plate is rotatably connected with the eccentric shaft.

5. An electrical linkage lift as claimed in claim 4 wherein: The end of the fixed plate away from the eccentric shaft is provided with an adjusting screw for adjusting the position of the fixed plate relative to the holding hoop.

6. An electrical linkage lift as claimed in claim 5 wherein: An upper limiting pin is arranged on the holding hoop, a lower limiting pin is arranged on the fixed plate, and the movable arm is located between the upper limiting pin and the lower limiting pin.

7. An electrical linkage lift as claimed in claim 3 wherein: An upper groove and a lower groove are respectively arranged on the top of the movable arm and the bottom of the movable arm, and the upper groove and the lower groove are embedded with the upper limiting pin and the lower limiting pin.

8. An electrical linkage lift as claimed in claim 6 wherein: An extending arm is arranged on the opening end of the holding hoop, a clamping groove is arranged on the outer wall of the extending arm, and the fixed plate is embedded in the clamping groove.

9. An electrical linkage lift as claimed in claim 8 wherein: A sliding groove is arranged on the fixed plate, the direction of the sliding groove is consistent with the length direction of the fixed plate, and a screw is arranged in the sliding groove and connected with the extending arm and the fixed plate.

10. An electrical linkage lift as claimed in claim 9 wherein: A compression bearing is arranged on one end of the eccentric shaft, a backing plate is fixed on the side wall of the extending arm close to the compression bearing, and the compression bearing is in abutment with the backing plate.

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