CN211336135U

CN211336135U - Self-adaptive mechanical power-assisted stair climbing trolley

Info

Publication number: CN211336135U
Application number: CN201921949558.9U
Authority: CN
Inventors: 张孝臣
Original assignee: Jinan Debang Logistics Co ltd
Current assignee: Jinan Debang Logistics Co ltd
Priority date: 2019-11-12
Filing date: 2019-11-12
Publication date: 2020-08-25
Anticipated expiration: 2029-11-12

Abstract

The utility model provides a self-adaptive mechanical power-assisted stair climbing trolley, which comprises two rod-shaped trolley beams at the left and right sides, wherein the lower ends of the two rod-shaped trolley beams are connected through a connecting shaft, the upper ends of the two rod-shaped trolley beams are connected through a hinged shaft to form a square frame, a pushing handle and an upper roller are fixedly connected at the upper ends of the trolley beams, the middle positions of the trolley beams are respectively hinged with a telescopic rod and a supporting rod, the tail ends of the telescopic rods are hinged with the supporting rod, the lower ends of the supporting rods are provided with a supporting wheel, a trolley frame hinged with the hinged shaft is arranged inside the square frame, the back surface of the bottom of the trolley frame is hinged with two supporting rods, the lower ends of the two supporting rods are respectively hinged with a guide sleeve sleeved on the connecting shaft, a damping spring is sleeved on the connecting shaft between the guide sleeve and the trolley beams, the stair climbing stability is high, and the impact of stair climbing can be reduced, and the purpose of mechanical assistance is achieved.

Description

Self-adaptive mechanical power-assisted stair climbing trolley

Technical Field

The utility model belongs to the technical field of climb the building dolly, especially, relate to a building dolly is climbed to self-adaptation mechanical assistance.

Background

With the continuous improvement of the economic level of China, more and more young people with gradually improved urbanization level move to cities from rural areas, and old cells in cities and towns do not have lifting elevators, so that goods are transported by using a stair climbing trolley when the goods are transported.

At present, there are various types of dolly of climbing on the market, but these dolly of climbing when the building is climbed to transportation article, the automobile body is whole and transport article can be when climbing the step, receive vibration and impact, the article of transporting receives the damage of impact easily, climb the holding of building dolly easy departure hand sometimes under the effect of impact, cause the dolly of climbing to fall, and because when climbing the higher step of building dolly strideing across, the gyro wheel is line contact with the step of right angle department, frictional force is little, climb building poor stability.

Therefore, it is necessary to provide an adaptive mechanical power-assisted stair climbing trolley.

SUMMERY OF THE UTILITY MODEL

To the technical problem that current building dolly exists of climbing, the utility model provides a building dolly is climbed to self-adaptation mechanical assistance.

A self-adaptive mechanical power-assisted stair climbing trolley comprises a pushing handle, an upper roller, a telescopic rod, a supporting wheel, a tripod, a trundle, a supporting rod, a frame, a trolley beam, a damping spring, a connecting shaft, a guide sleeve, a ratchet wheel, a clamping groove, a spring, a push rod, a clamping pin, a pawl, a fixed rod and a right-angle clamping groove; the lower ends of two rod-shaped vehicle beams on the left side and the right side are connected through a connecting shaft, the upper ends of the two rod-shaped vehicle beams are connected through a hinged shaft to form a square frame, the upper end of the vehicle beam is fixedly connected with a pushing handle and an upper roller, the middle position of the vehicle beam is respectively hinged with a telescopic rod and a supporting rod, the tail end of the telescopic rod is hinged with the supporting rod, the lower end of the supporting rod is provided with a supporting wheel, the inside of the square frame is provided with a vehicle frame hinged with the hinged shaft, the back surface of the bottom of the vehicle frame is hinged with two supporting rods, the lower ends of the two supporting rods are respectively hinged with a guide sleeve sleeved on the connecting shaft, a damping spring is sleeved on the connecting shaft between the guide sleeve and the vehicle beam, two sides of the connecting shaft respectively extend into the vehicle beam, the tripod medial surface rigid coupling has a ratchet, the connecting axle both sides rigid coupling respectively has a dead lever, two articulated respectively on the dead lever have one with the position that corresponds ratchet complex pawl, spring one end is connected the pawl other end with the dead lever is connected, two the pawl upper end is equipped with a draw-in groove respectively, two the car roof beam outside articulates respectively has a push rod, push rod upper end rigid coupling have one with draw-in groove complex bayonet lock.

Preferably, a plurality of right-angle clamping grooves are uniformly distributed on the outer circumference of the caster.

Preferably, a transition fillet is arranged at the edge of the right-angle clamping groove.

Preferably, the two struts are symmetrically distributed along a vertical axis of the frame.

Preferably, when the bayonet is matched with the clamping groove, the pawl is disengaged from the ratchet wheel.

Preferably, when the vehicle is unloaded, the included angle between the frame and the beam is 0-45 degrees.

Preferably, the upper roller and the support wheel are both polyurethane rollers.

Preferably, the frame is of an L-shaped configuration.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses the outer circumference equipartition of truckle has the right angle draw-in groove, and the right angle draw-in groove can block on climbing the building step face, and increase frictional force has improved the stability of climbing the building greatly.

2. The utility model discloses the dolly of climbing the building can be via guide pin bushing extrusion damping spring at the in-process of climbing the building, utilizes jolting when damping spring reduces upstairs, plays buffer protection's effect to carrying article, avoids carrying the heavy object to receive the damage at the in-process of climbing the building.

3. The utility model discloses building dolly stridees across the step after, damping spring extends naturally, and partly frame and bear heavy object gravity can be offset to elasticity, play the purpose of mechanical helping hand.

4. The utility model discloses when taking place to fall, ratchet pawl mechanism can prevent the tripod to rotate, and the frame of L type structure can avoid climbing the building dolly with the step contact and continue to fall, and the safety in utilization is high.

Drawings

Fig. 1 is an overall front view structural diagram of the present invention.

Fig. 2 is a left side view of the whole structure of the utility model.

Fig. 3 is a view of the utility model in fig. 2.

Fig. 4 is an enlarged view of a portion of the ratchet-pawl engagement of fig. 2 according to the present invention.

Fig. 5 is a partially enlarged view of the connection shaft of fig. 2 according to the present invention.

Fig. 6 is a schematic view of the caster shown in fig. 3 according to the present invention.

In the figure:

the device comprises a push handle 1, an upper roller 2, a telescopic rod 3, a support rod 4, a support wheel 5, a tripod 6, a caster 7, a support rod 8, a frame 9, a beam 10, a damping spring 11, a connecting shaft 12, a guide sleeve 13, a ratchet 14, a clamping groove 15, a spring 16, a push rod 17, a clamping pin 18, a pawl 19, a fixed rod 20 and a right-angle clamping groove 21.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 6

The utility model provides a self-adaptive mechanical power-assisted stair climbing trolley, which comprises a pushing handle 1, an upper roller 2, a telescopic rod 3, a support rod 4, a support wheel 5, a tripod 6, a caster 7, a support rod 8, a frame 9, a beam 10, a damping spring 11, a connecting shaft 12, a guide sleeve 13, a ratchet 14, a clamping groove 15, a spring 16, a push rod 17, a bayonet 18, a pawl 19, a fixed rod 20 and a right-angle clamping groove 21; the lower ends of two rod-shaped vehicle beams 10 on the left side and the right side are connected through a connecting shaft 12, the upper ends are connected through a hinged shaft to form a square frame, the upper end of the vehicle beam 10 is fixedly connected with a push handle 1 and an upper roller 2, the middle position of the vehicle beam 10 is respectively hinged with a telescopic rod 3 and a supporting rod 4, the tail end of the telescopic rod 3 is hinged with the supporting rod 4, the lower end of the supporting rod 4 is provided with a supporting wheel 5, the inside of the square frame is provided with a vehicle frame 9 hinged with the hinged shaft, the back surface of the bottom of the vehicle frame 9 is hinged with two supporting rods 8, the lower ends of the two supporting rods 8 are respectively hinged with a guide sleeve 13 sleeved on the connecting shaft 12, a damping spring 11 is sleeved on the connecting shaft 12 between the guide sleeve 13 and the vehicle beam 10, the two sides of the connecting shaft 12 respectively extend into the vehicle beam 10, the tail ends of the two, two sides of the connecting shaft 12 are respectively fixedly connected with a fixed rod 20, two fixed rods 20 are respectively hinged with a pawl 19 matched with a ratchet wheel 14 at a corresponding position, one end of a spring 16 is connected with the pawl 19, the other end of the spring is connected with the fixed rod 20, the upper ends of the two pawls 19 are respectively provided with a clamping groove 15, the outer sides of the two vehicle beams 10 are respectively hinged with a push rod 17, the upper end of the push rod 17 is fixedly connected with a bayonet 18 matched with the clamping groove 15, the outer circumference of the caster 7 is uniformly provided with a plurality of right-angle clamping grooves 21, transition round corners are arranged at the edges of the right-angle clamping grooves 21, the two support rods 8 are symmetrically distributed along the vertical axis of the vehicle frame 9, when the bayonet 18 is matched with the clamping groove 15, the pawl 19 is separated from the ratchet wheel 14.

When the utility model is used, a plurality of right angle clamping grooves 21 are evenly distributed on the outer circumference of the caster 7, the right angle clamping grooves 21 can be clamped on the stair climbing step surface to increase the friction force and greatly improve the stability of stair climbing, when two support rods 8 at the lower end of the L-shaped frame 9 for loading are loaded, the damping spring 11 can be extruded through the guide sleeve 13, the damping spring 11 is utilized to reduce jolt during stair climbing, the damping spring 11 plays a role of buffering and protecting carried articles, the carried heavy articles are prevented from being damaged during stair climbing, when the stair climbing trolley climbs stairs and strides over stair steps, the shock absorbing spring 11 can be extruded through the guide sleeve 13 by the frame 9, the sum of the elasticity of the two damping springs 11 is larger than the sum of the gravity of the frame 10 and the gravity of the loaded heavy articles when the stair climbing stairs steps, the damping spring 11 can be extended and reset to ensure that the sum of the elasticity of the two damping springs 11 is equal, in the process, the extension elastic force of the damping spring 11 can offset part of the frame 10 and the gravity of a load bearing object thereof to achieve the purpose of mechanical assistance, when the stair climbing trolley falls off accidentally in the carrying process, the ratchet wheel 14 and the pawl 19 on the back of the tripod 6 are in a matched state, the connecting shaft 12 is fixed to prevent the tripod 6 from continuously rotating, so that the tripod 6 cannot rotate when falling down, after the frame 9 bears the load, the included angle between the frame 9 and the beam 10 is 0-45 degrees, the frame 9 is of an L-shaped structure, the rear end of the frame 9 can be clamped on a step surface in the falling process, the stair climbing trolley is prevented from continuously falling, the falling prevention capability is strong, when the ratchet wheel and pawl mechanism is not required to fall, the push rod 17 is continuously rotated to clamp the clamping pin 18 into the clamping groove 15, the pawl 19 is pushed to upwards rotate in the clamping process, and the pawl 19 is separated from the, this simple structure, low in manufacturing cost is honest and clean, and reliable operation has work safety, and carrying capacity is big, plays the purpose of buffering shock attenuation protection to delivery and goods, reduces to climb the damage of building in-process impact to the delivery article.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. A self-adaptive mechanical power-assisted stair climbing trolley is characterized by comprising a pushing handle (1), an upper roller (2), a telescopic rod (3), a supporting rod (4), a supporting wheel (5), a tripod (6), a caster (7), a supporting rod (8), a frame (9), a trolley beam (10), a damping spring (11), a connecting shaft (12), a guide sleeve (13), a ratchet wheel (14), a clamping groove (15), a spring (16), a push rod (17), a clamping pin (18), a pawl (19), a fixed rod (20) and a right-angle clamping groove (21); the lower ends of two rod-shaped vehicle beams (10) on the left side and the right side are connected through a connecting shaft (12), the upper ends of the two rod-shaped vehicle beams are connected through a hinged shaft to form a square frame, a pushing handle (1) and an upper roller (2) are fixedly connected to the upper end of the vehicle beam (10), a telescopic rod (3) and a supporting rod (4) are respectively hinged to the middle position of the vehicle beam (10), the tail end of the telescopic rod (3) is hinged to the supporting rod (4), a supporting wheel (5) is installed at the lower end of the supporting rod (4), a vehicle frame (9) hinged to the hinged shaft is arranged in the square frame, two supporting rods (8) are hinged to the back of the bottom of the vehicle frame (9), a guide sleeve (13) sleeved on the connecting shaft (12) is hinged to the lower ends of the two supporting rods (8), a damping spring (11) is sleeved on the connecting shaft (12, two sides of the connecting shaft (12) respectively extend into the vehicle beam (10), the tail ends of the two sides are respectively provided with a rotatable tripod (6), three caster wheels (7) are uniformly distributed at the upper end of the tripod (6) along the axis of the connecting shaft (12), a ratchet wheel (14) is fixedly connected to the inner side face of the tripod (6), a fixing rod (20) is fixedly connected to each of two sides of the connecting shaft (12), a pawl (19) matched with the ratchet wheel (14) and in a corresponding position is hinged to each of the two fixing rods (20), one end of a spring (16) is connected with the other end of the pawl (19) and connected with the fixing rod (20), a clamping groove (15) is formed in each of the upper ends of the two pawls (19), a push rod (17) is hinged to each of the outer sides of the two vehicle beams (10), the upper end of the push rod (17) is fixedly connected with a clamping pin (18) matched with the clamping groove (15).

2. The self-adaptive mechanical power-assisted stair climbing trolley according to claim 1, wherein a plurality of right-angle clamping grooves (21) are uniformly distributed on the outer circumference of the caster (7).

3. The adaptive mechanical power-assisted stair climbing trolley according to claim 2, wherein transition fillets are arranged at edges of the right-angle clamping grooves (21).

4. The adaptive mechanical power-assisted stair climbing trolley according to claim 1, wherein the two support rods (8) are symmetrically distributed along a vertical axis of the trolley frame (9).

5. The adaptive mechanical power-assisted stair climbing trolley according to claim 1, wherein the pawl (19) is disengaged from the ratchet wheel (14) when the bayonet (18) is engaged with the bayonet slot (15).

6. The self-adaptive mechanical power-assisted stair climbing trolley according to claim 1, wherein an included angle between the trolley frame (9) and the trolley beam (10) is 0-45 degrees when the trolley is unloaded.

7. The self-adaptive mechanical power-assisted stair climbing trolley according to claim 1, wherein the upper rollers (2) and the supporting wheels (5) are polyurethane rollers.

8. The adaptive mechanical power-assisted stair climbing trolley according to claim 1, wherein the trolley frame (9) is of an L-shaped structure.