CN219316437U

CN219316437U - Trowelling machine

Info

Publication number: CN219316437U
Application number: CN202221520497.6U
Authority: CN
Inventors: 孙小飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-07-07
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to an appliance for finishing the ground cast in place, in particular to a troweling machine. The trowelling machine comprises a frame and a trowelling piece arranged on the frame, wherein a holding handle is arranged on the frame, the trowelling piece is provided with an inclination adjusting mechanism, the inclination adjusting mechanism comprises a pull wire and a pull wire driving mechanism, the pull wire driving mechanism comprises a base, a push rod rotationally assembled on the base and a pull wire linkage piece connected with the push rod in a transmission manner, a unidirectional transmission mechanism is arranged between the push rod and the pull wire linkage piece and used for driving the pull wire linkage piece to pull the pull wire through the push rod when the push rod moves forward, an output piece of the unidirectional transmission mechanism is in transmission connection with the pull wire linkage piece, is relatively fixed or is integrated, and a unidirectional locking and unlocking mechanism is arranged between the holding handle or the base and the output piece and/or the pull wire linkage piece so as to prevent the pull wire linkage piece from automatically backing when the push rod moves backward. The utility model solves the problem that the existing trowelling machine is inconvenient to adjust the dip angle of the trowelling piece.

Description

Trowelling machine

Technical Field

The utility model relates to an appliance for finishing the ground cast in place, in particular to a troweling machine.

Background

The trowelling machine is used for trowelling the bottom surface of the cast-in-place, the device comprises a frame, a main shaft arranged on the frame, a wiping sheet arranged on the main shaft and an inclination angle adjusting mechanism for adjusting the inclination angle of the wiping sheet. The frame comprises a holding handle, and the inclination angle adjusting mechanism is driven by a wire pulling mechanism arranged at the holding handle, namely, the inclination angle of the smearing piece is adjusted by pulling and loosening of the wire pulling mechanism.

As shown in fig. 1-2, in the conventional troweling machine, the wire pulling mechanism has two typical structures, namely a screw nut driving wire pulling mechanism and a winch driving wire pulling mechanism. As shown in fig. 1, the lead screw nut driving wire pulling mechanism comprises a sliding sleeve 11 (generally composed of a main rod of a handle), a nut sleeve 12 slidingly assembled in the sliding sleeve 11, and a lead screw 13 rotationally assembled at one end of the sliding sleeve 11, wherein a hand wheel 14 is arranged on the lead screw 13, a wire pulling connecting hole is arranged at one end of the sliding sleeve 11 far away from the hand wheel 14, and when the wire pulling mechanism is used, an operator controls the wire pulling end to reciprocate by screwing the hand wheel 14, so that the dip angle of a wiping piece is adjusted. In the practical application process, the pitch of the screw rod 13 is smaller, so that the efficiency of adjusting the dip angle of the wiping piece is lower, and in addition, the matching part of the screw rod 13, the sliding sleeve 11 and the nut sleeve 12 is easy to rust and block, so that the dip angle of the wiping piece cannot be adjusted.

As shown in fig. 2, the winding-driven wire pulling mechanism includes a sheave 22 rotatably mounted on the handle via a central shaft 21, and a rope end connector 23 and a push rod 24 are provided on the sheave 22. When the novel scraper knife is used, the stay wire is connected with the rope end connecting piece 23, the grooved pulley 22 is driven to rotate through the push rod 24, when the push rod 24 moves to a set position, the scraper knife is stopped through the stop structure on the handle, so that the scraper knife is kept at an inclined angle required by work, and the push rod 24 needs to rotate by a large extent to meet the requirement of scraper knife inclination adjustment, so that the operation is inconvenient.

Disclosure of Invention

The utility model aims to provide a trowelling machine so as to solve the problem that the conventional trowelling machine is inconvenient to adjust the dip angle of a trowelling piece.

In order to solve the problems, the trowelling machine adopts the following technical scheme: the trowelling machine comprises a frame and a trowelling piece arranged on the frame, wherein a handle is arranged on the frame, the trowelling piece is provided with an inclination adjusting mechanism, the inclination adjusting mechanism comprises a pull wire and a pull wire driving mechanism, the pull wire driving mechanism comprises a base, a push rod rotationally assembled on the base and a pull wire linkage piece connected with the push rod in a transmission mode, a unidirectional transmission mechanism is arranged between the push rod and the pull wire linkage piece and used for driving the pull wire linkage piece to pull the pull wire through the push rod when the push rod moves forward, an output piece of the unidirectional transmission mechanism is in transmission connection with the pull wire linkage piece, is relatively fixed or is integrated, and a unidirectional locking and unlocking mechanism is arranged between the handle or the base and the output piece and/or the pull wire linkage piece so as to prevent the pull wire linkage piece from automatically retracting when the push rod moves backward.

The beneficial effects are that: the trowelling machine improves the existing trowelling machine, a unidirectional transmission mechanism is arranged between the push rod of the pull wire driving mechanism and the pull wire linkage piece, and a unidirectional locking and unlocking mechanism is arranged between the handle or the base and the output piece and/or the pull wire linkage piece, so that when the push rod moves reversely, the pull wire linkage piece cannot retract along with the pull rod, and when the trowelling machine is used, the pull wire can be pulled by pushing the push rod to rotate in a reciprocating way, so that the dip angle of a trowelling piece is adjusted, the amplitude of pushing the push rod each time can be reduced, the operation convenience of the trowelling machine is improved, and the problem that the dip angle of the trowelling piece is inconvenient to adjust in the existing trowelling machine is solved.

Furthermore, the output part of the unidirectional transmission mechanism is a gear, the stay wire linkage part is a rack meshed with the gear, and the rack is assembled on the base along the length extending direction in a guiding way. The gear is used as an output piece of the unidirectional transmission mechanism, and meanwhile, when the rack is used as a stay wire linkage piece, the problem of clamping is not easy to occur between the gear and the stay wire linkage piece, and the tooth pitch of the gear can be designed, so that the quick adjustment of the dip angle of the smear is realized.

Still further, the rack is arranged co-linearly with the pull wire. When the racks and the stay wires are arranged in a collinear way, the consistency of the movement directions of the racks and the stay wires can be ensured, so that corresponding reversing wheels and other parts are not required to be arranged, the structure of the inclination angle adjusting mechanism is simpler, and the failure rate of the inclination angle adjusting mechanism is reduced.

Still further, be equipped with on the push rod with the push rod pawl of gear complex, unidirectional transmission mechanism comprises push rod pawl and gear. The unidirectional transmission mechanism formed by the push rod pawl and the gear has simple structure and is convenient to assemble.

Further, the rotation axis of the push rod coincides with the center line of the gear, a one-way bearing is arranged between the push rod and the gear, and the one-way transmission mechanism is composed of the one-way bearing and the gear. The unidirectional bearing is used as a commercial finished product and has the advantages of easy acquisition and reliable work.

Further, a second pawl matched with the gear is assembled on the base, and the unidirectional locking and unlocking mechanism is composed of the second pawl. The unidirectional locking and unlocking mechanism formed by the second pawl has the advantages of simple structure and convenience in operating and unlocking.

Drawings

FIG. 1 is a schematic view of a lead screw nut driven cord mechanism;

FIG. 2 is a schematic diagram of a hoist driven wire pulling mechanism;

fig. 3 is a schematic structural view of a wire drive mechanism in embodiment 1 of the trowelling machine of the present utility model.

In fig. 1: 11. a sliding sleeve; 12. a nut sleeve; 13. a screw rod; 14. and a hand wheel.

In fig. 2: 21. a central shaft; 22. a sheave; 23. rope end connecting piece; 24. a push rod.

In fig. 3: 31. a base; 311. ear plates; 312. a connecting column; 32. a push rod; 33. and a stay wire linkage.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

It is noted that relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" or the like does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The features and capabilities of the present utility model are described in further detail below in connection with the examples.

Example 1 of the trowelling machine of the utility model:

the trowelling machine comprises a frame and a trowelling piece arranged on the frame, wherein a handrail is arranged on the frame, and the trowelling piece is provided with an inclination angle adjusting mechanism, wherein the frame, the trowelling piece and the mounting structure of the trowelling piece are all in the prior art, and corresponding structures are disclosed in Chinese patent specification with an authorized notice number of CN201306002Y, so that the trowelling machine is not repeated herein. The inclination angle adjusting mechanism comprises a stay wire and a stay wire driving mechanism, and the connecting structure between the stay wire and the smearing piece is the same in the prior art and is not repeated here.

As shown in fig. 3, the wire drive mechanism includes a base 31, a push rod 32 and a wire linkage 33.

The base 31 is fork-shaped (U-shaped) and comprises two lugs 311 arranged at intervals, and the width between the two lugs 311 is larger than the width of the push rod 32 in the corresponding direction, so that the push rod 32 can enter. The bottom of the base 31 is provided with a connecting column 312, and the connecting column 312 can be a stud and is connected with a corresponding supporting plate or a main rod on the handle in use. A guide groove is formed between the lower portions of the both ear plates 311, and the extending direction of the guide groove is perpendicular to the distribution direction of the both ear plates 311.

The push rod 32 is rotatably assembled on the base 31 by using the two lug plates 311 of the base 31 as supports through corresponding rotating shafts, so as to form a swing rod structure. The stay wire linkage member 33 is a member directly connected to a stay wire and can move synchronously with the stay wire, in this embodiment, the stay wire linkage member specifically adopts a rack, the extending direction of the rack is the same as the extending direction of the stay wire, the rack and the stay wire are arranged in a collinear manner, and the right end of the rack is used for being connected with the stay wire in the figure.

A unidirectional transmission mechanism is arranged between the push rod 32 and the stay wire linkage 33, in this embodiment, the unidirectional transmission mechanism comprises a gear assembled on the base in a rotating way and a push rod pawl arranged on the push rod, in this embodiment, the gear and the push rod are coaxially arranged on the base 31, the push rod pawl is hinged on the push rod 32, when the push rod rotates clockwise under the view angle of fig. 3, namely, rotates forward, the gear is driven to rotate through the cooperation of the push rod pawl and the gear, when the push rod rotates anticlockwise under the view angle of fig. 3, namely, rotates reversely, the pawl cannot clamp the gear, and at the moment, the push rod cannot drive the gear to rotate.

Meanwhile, a unidirectional locking and unlocking mechanism is arranged between the base 31 and the gear and used for locking the gear when the push rod rotates reversely to prevent the gear from retreating, and unlocking the gear when the push rod rotates positively to ensure that the gear can rotate normally. For the matching structure of the push rod, the push rod pawl, the gear and the second pawl, refer to the specification of the chinese patent publication CN2885730Y, and will not be repeated here.

In the process of using the trowelling machine, when the dip angle of the trowelling piece needs to be adjusted, an operator can push the push rod 32 to rotate forward, so that the push rod ratchet and the gear drive the rack to retreat sequentially, and then the pull wire is pulled through the rack, the gear can not be driven to rotate when the push rod 32 moves reversely, and the gear can be locked by the second pawl, so that the dip angle of the trowelling piece can be adjusted to a set value by adopting a mode of pushing for multiple times without pushing too much in the process of pushing the push rod 32. Because the amplitude of the push rod 32 is smaller, the operation is more convenient; when the smear is required to reset to a horizontal state, the second pawl is pulled out, the smear can automatically reset under the action of the gravity of the rack, and the rack is driven to reset.

Example 2 of the trowelling machine of the present utility model:

in example 1 of the trowelling machine of the present utility model, the pull wire linkage employs a rack. In this embodiment, the wire pulling linkage directly employs a reel fixed with a gear. In other embodiments, the wire linkage may also be integral with the gear.

Example 3 of the trowelling machine of the utility model:

in embodiment 1 of the trowelling machine of the present utility model, the push rod and the gear are unidirectionally driven by the push rod pawl. In the embodiment, a one-way bearing is arranged between the rotating shaft of the push rod and the gear, and the rotating shaft of the push rod and the gear are in transmission connection through the one-way bearing.

Example 4 of the trowelling machine of the utility model: in embodiment 1 of the trowelling machine of the present utility model, a one-way locking and unlocking mechanism is provided between the base and the gear. In this embodiment, the unidirectional locking and unlocking mechanism is arranged between the handle and the gear, besides the second pawl, a structure of a latch with a spring can be adopted, an inclined plane is arranged on the latch, the gear is matched with the inclined plane to slide in the rotation process of tightening the stay wire, and the unidirectional locking and unlocking mechanism can be locked when reversely rotating.

Claims

1. The trowelling machine comprises a frame and a trowelling piece arranged on the frame, wherein a holding handle is arranged on the frame, the trowelling piece is provided with an inclination adjusting mechanism, the inclination adjusting mechanism comprises a pull wire and a pull wire driving mechanism, the pull wire driving mechanism comprises a base (31), a push rod (32) rotationally assembled on the base (31) and a pull wire linkage piece (33) in transmission connection with the push rod (32), and the trowelling machine is characterized in that a one-way transmission mechanism is arranged between the push rod (32) and the pull wire linkage piece (33) and used for driving the pull wire linkage piece (33) to pull the pull wire through the push rod (32) when the push rod (32) moves forward, an output piece of the one-way transmission mechanism is in transmission connection with the pull wire linkage piece (33), is relatively fixed or is integrally arranged, and a one-way locking and unlocking mechanism is arranged between the holding handle or the base and the output piece and/or the pull wire linkage piece (33) so as to prevent the pull wire linkage piece (33) from automatically retreating when the push rod (32) moves reversely.

2. Troweling machine according to claim 1, characterized in that the output element of the unidirectional transmission is a gear wheel, the stay wire linkage (33) is a rack wheel meshed with the gear wheel, and the rack wheel is assembled on the base (31) in a guiding manner along the length extension direction.

3. A troweling machine as claimed in claim 2, wherein the rack is arranged co-linear with the pull wire.

4. A troweling machine according to claim 2, characterized in that the push rod (32) is provided with a push rod pawl cooperating with the gear, the unidirectional transmission being constituted by the push rod pawl and the gear.

5. A troweling machine according to claim 2, characterized in that the axis of rotation of the push rod (32) coincides with the centre line of the gear wheel and that a one-way bearing is provided between the push rod and the gear wheel, the one-way transmission being constituted by the one-way bearing and the gear wheel.

6. A troweling machine according to any one of claims 2-5, characterized in that said base (31) is fitted with a second pawl cooperating with said gear, said unidirectional locking and unlocking mechanism being constituted by said second pawl.