A horizontal grass rake

Abstract

The present invention relates to the technical field of grass rakes, and specifically to a horizontal grass rake, comprising a frame for connecting a mobile vehicle and a main grass rake installed on the frame, the frame comprising a crossbeam and a longitudinal beam perpendicular to each other, a slide rail being provided on the crossbeam, two slides being slidably installed on the slide rail, and the slides being driven by a synchronous driving unit provided on the longitudinal beam to perform synchronous movement symmetrically about the crossbeam; a mounting plate is provided at the bottom of the main grass rake, a vertical shaft column is provided on the mounting plate, and the shaft column is inserted into an insertion cylinder provided on the upper side of the slide, and the technical solution rotates the two rotatable main grass rakes to a parallel state with the rake teeth facing inward during transportation and movement, so as to avoid contact with people or objects on the roadside and causing damage, and the main grass rakes are respectively located at both ends of the frame to maintain the balance of the two ends of the frame, and are not prone to tipping over during transportation and movement.

Description

Technical Field

[0001] The present invention relates to the technical field of grass rakes, in particular to a transverse grass rake. Background Art

[0002] A hay rake is a forage harvesting machine that gathers grass scattered on the ground into swaths. The purpose of raking is to fully dry the grass and facilitate hay collection. Based on the relationship between the direction of the swath and the machine's forward motion, hay rakes can be categorized as either transverse or lateral. During transverse rake operation, the tips of the rake's tines touch the ground, rake-forming the grass cut by the mower into transverse swaths (i.e., swaths perpendicular to the machine's direction of travel). These dense swaths are difficult to dry, and they are often uneven and contain many impurities, hindering subsequent operations. Operating speeds are also relatively low, typically 4 to 5 km / h. The size of the swaths gathered by this type of machine can be manually controlled, and it is typically used on natural pastures with low yields.

[0003] Chinese patent CN214206450U discloses a hydraulically lifted horizontal grass rake, comprising a frame, a grass rake, axles, leg jacks, a center beam, a left-hand pull angle steel (I), a left-hand pull angle steel, a cross beam, a traction plate, a pin, an adjustable square tube device, an oil pipe, a right-hand pull angle steel, and a right-hand pull angle steel (I). After operation, the equipment can be easily switched from a working state to a transport state by rotating the grass rake to one side of the frame. However, the grass rake still has a certain length, resulting in a large swing amplitude during movement, making it difficult to operate when turning. Furthermore, the grass rake's location on one side shifts the frame's center of gravity to one side, making it prone to tipping over during movement. Summary of the Invention

[0004] In view of the above problems, it is necessary to provide a horizontal grass rake to solve the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A horizontal grass rake comprises a frame for connecting a mobile vehicle and a main grass rake installed on the frame, the frame comprising a crossbeam and a longitudinal beam perpendicular to each other, the longitudinal beam extending horizontally along the perpendicular bisector of the crossbeam, a slide rail being provided on the crossbeam, two slides being slidably mounted on the slide rail, the slides being driven by a synchronous drive unit provided on the longitudinal beam to perform synchronous movement symmetrically about the crossbeam; a mounting plate is provided at the bottom of the main grass rake, a vertical shaft column is provided on the mounting plate, the shaft column is inserted into an insertion cylinder provided on the upper side of the slide; when the synchronous drive unit drives the slide to drive the main grass rake to move to both ends of the crossbeam, the main grass rake rotates around the shaft column to a position where the main grass rake is parallel to the longitudinal beam and the rake teeth are opposite; when the synchronous drive unit drives the slide to drive the main grass rake to move to fit together, the two ends of the main grass rake fit together and work parallel to the crossbeam.

[0007] Preferably, the synchronous drive unit includes two connecting arms of the same length, one end of the connecting arm is hinged to the side of the slide toward the longitudinal beam, and the other end of the connecting arm is coaxially hinged to the hinge seat, which is slidably installed on the longitudinal beam. The movement of the hinge seat drives the slide to move symmetrically on the slide rail.

[0008] Preferably, a guide rod parallel to the longitudinal beam is provided on the hinged seat, at least one fixed seat is provided on the longitudinal beam, and the guide rod is inserted into a guide hole provided on the fixed seat; a top plate is provided on the top of the guide rod, and a locking unit is provided on the fixed seat, and when the top plate is in contact with the fixed seat, the locking unit locks the position of the top plate.

[0009] Preferably, the locking unit includes a flat plate mounted on a fixed seat, an elastic block is slidably mounted on the flat plate, a top limit block is provided on the flat plate at the top of the elastic block, the elastic block and the top limit block are elastically connected by a spring, and the spring applies an elastic force to move the elastic block downward; the spacing between the elastic block and the fixed seat is the same as the thickness of the top plate; a paddle is provided on the top of the elastic block.

[0010] Preferably, a slope is provided on one side of the elastic block facing the top plate, and the top plate moves in contact with the slope of the elastic block to push the elastic block upward.

[0011] Preferably, a locker for locking the rotation angle of the main grass rake is also installed on the mounting plate, and the locker includes two insertion rods, which are connected by a connecting handle; the axis of the insertion rod is parallel to the axis of the shaft column, and the insertion rod is symmetrical about the axis of the shaft column, and the upper end of the insertion rod is inserted into two sleeves provided below the mounting plate; four positioning holes are provided on the upper side of the slide, and the positioning holes are distributed at equal intervals around the axis of the insertion tube, and the rotation angle of the main grass rake is locked when the insertion rod is coaxially connected to the sleeve and the positioning hole.

[0012] Preferably, the sleeve is arranged on both sides of the length direction of the main grass rake. When the main grass rake rotates to be parallel to the beam, a first piston is slidably installed in the positioning hole where the insertion rod is inserted, and the bottom of the positioning hole is connected to one end of the liquid inlet channel, and the positioning hole is connected to the oil chamber through the liquid inlet channel; the oil chamber is filled with hydraulic oil, and a second piston is slidably installed in the oil chamber, and a through-port at one end of the oil chamber is arranged on the side of the slide facing the two ends of the beam; baffles are provided at both ends of the beam, and two horizontal plug blocks are fixedly installed on the baffles, and the cross-sectional shape of the plug blocks is the same as the shape of the through-port. When the slide moves to the two ends of the beam, the plug blocks are inserted into the elastic blocks to push the elastic blocks and the first piston to connect to the positioning holes at the top of the handle.

[0013] Preferably, a vertical downward connecting rod is provided below the articulated seat, and a waist-shaped hole extending along the length direction of the longitudinal beam is provided on the longitudinal beam. The connecting rod passes through the waist-shaped hole and extends to the bottom of the longitudinal beam and slides along the waist-shaped hole; the connecting rod is fixedly connected to the sliding mounting seat, and when the synchronous drive unit drives the slide to move to the two ends of the beam, an auxiliary grass rake is installed on the sliding mounting seat, and the auxiliary grass rake is parallel to the main grass rake, and the two sides of the auxiliary grass rake are connected to the two sides of the main grass rake and keep the main grass rake and the auxiliary grass rake parallel to the beam.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, the two main grass rakes in the present invention are placed along the direction of the crossbeam parallel to the frame when the grass rake is working. When the mobile vehicle moves, the rake teeth of the two main grass rakes jointly rake the grass cut by the lawn mower into horizontal grass strips. After the synchronous drive unit drives the two slides to move synchronously to the two ends of the crossbeam respectively, the staff rotates the main grass rakes to rotate the main grass rakes around the axis of the mounting plate to a direction parallel to the longitudinal beam. At this time, the rake teeth of the two main grass rakes are arranged relative to each other. The rake teeth of the two main grass rakes are inward during transportation and movement to avoid contact with people or objects on the roadside and causing injuries. The main grass rakes are respectively located at both ends of the frame to maintain the balance of both ends of the frame, and are not easy to tip over during transportation.

[0016] Secondly, in the present invention, the rotation angle of the main grass rake around the axis of the shaft column is locked by a lock. When the main grass rake is rotated to be parallel to the beam, a liquid inlet channel is provided at the bottom of the two positioning holes where the insertion rod is inserted. The liquid inlet channel extends to the oil chamber. The oil chamber is filled with a certain amount of hydraulic oil. The first piston and the oil chamber are slidably installed in the positioning hole. The two plug-in blocks on the baffle installed at both ends of the beam are synchronously inserted into the opening of the slide facing the baffle side. When the slide drives the main grass rake to move to the two ends of the beam, the lock automatically releases the lock on the rotation angle of the main grass rake. The staff can directly drive the main grass rake to rotate, reducing the staff's operating steps.

[0017] Third, the articulated seat of the synchronous drive unit in the present invention is connected to the sliding mounting seat through a connecting rod. When the synchronous drive unit drives the sliding seat to drive the main grass rake to move to the two ends of the beam, the sliding mounting seat moves to between the two main grass rakes. The staff can take out the auxiliary grass rake and install the auxiliary grass rake between the two main grass rakes. The length directions of the main grass rake and the auxiliary grass rake are kept parallel to the beam, and the rake teeth of the auxiliary grass rake and the main grass rake are in parallel, so the grass strips can be raked at the same time, the rake area is increased, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of a horizontal rake in a first working state;

[0019] Figure 2is a side view of a transverse rake in a first working state;

[0020] Figure 3 yes Figure 2 Cross-sectional view at AA of FIG;

[0021] Figure 4 yes Figure 3 A partial enlarged view of point B;

[0022] Figure 5 is a perspective view of a horizontal rake in a second working state;

[0023] Figure 6 is a side view of a transverse rake in a second working state;

[0024] Figure 7 yes Figure 6 A partial enlarged view of point C;

[0025] Figure 8 yes Figure 6 Cross-sectional view at DD of ;

[0026] Figure 9 yes Figure 8 A local enlarged view of point E;

[0027] Figure 10 It is a three-dimensional structural decomposition of a horizontal grass rake Figure 1 ;

[0028] Figure 11 It is a three-dimensional structural decomposition of a horizontal grass rake Figure 2 ;

[0029] Figure 12 It is a three-dimensional diagram of the third working state of the horizontal grass rake.

[0030] The numbers in the figure are: 1, frame; 11, crossbeam; 111, slide rail; 112, baffle; 113, insert; 12, longitudinal beam; 121, fixing seat; 122, guide hole; 123, waist-shaped hole; 13, locking unit; 131, flat plate; 132, elastic block; 133, top limit block; 134, spring; 135, paddle; 2, main rake; 21, mounting plate; 211, shaft column; 212, sleeve; 22 , lock; 221, insertion rod; 222, connecting handle; 3, sliding seat; 31, insertion cylinder; 32, positioning hole; 321, first piston; 322, liquid inlet channel; 33, oil chamber; 331, second piston; 332, through port; 4, synchronous drive unit; 41, connecting arm; 42, articulated seat; 421, guide rod; 422, top plate; 423, connecting rod; 424, sliding mounting seat; 425, auxiliary grass rake. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1 to 12 :

[0033] A horizontal grass rake comprises a frame 1 for connecting a mobile vehicle, and a main grass rake 2 mounted on the frame 1, wherein the frame 1 comprises a crossbeam 11 and a longitudinal beam 12 perpendicular to each other, the longitudinal beam 12 extending horizontally along the perpendicular bisector of the crossbeam 11, a slide rail 111 is provided on the crossbeam 111, two slide seats 3 are slidably mounted on the slide rail 111, and the slide seats 3 are driven by a synchronous drive unit 4 provided on the longitudinal beam 12 to move symmetrically about the crossbeam 11; a mounting bracket is provided at the bottom of the main grass rake 2 Plate 21, a vertical shaft column 211 is provided on the mounting plate 21, and the shaft column 211 is inserted into the insertion cylinder 31 provided on the upper side of the slide 3; when the synchronous drive unit 4 drives the slide 3 to drive the main grass rake 2 to move to the two ends of the beam 11, the main grass rake 2 rotates around the shaft column 211 to the position where the main grass rake 2 is parallel to the longitudinal beam 12 and the rake teeth are opposite; when the synchronous drive unit 4 drives the slide 3 to drive the main grass rake 2 to move to fit each other, the two ends of the main grass rake 2 fit and work parallel to the beam 11.

[0034] The horizontal mower in the present application is connected to the top of the longitudinal beam 12 of the frame 1 by a mobile vehicle. The movement of the mobile vehicle drives the main mower 2 to mow grass. Two main mowers 2 are installed on the frame 1 in this embodiment. When the mower is working, the two main mowers 2 are placed in a direction parallel to the crossbeam 11 of the frame 1, and the two ends of the main mower 2 are fitted together. When the mobile vehicle moves, the mowing teeth of the two main mowers 2 jointly mow the grass cut by the lawn mower into horizontal grass strips. A mounting plate 21 and a shaft column 211 are provided below the opposite end of the main mower 2. The shaft column 211 is inserted into the insertion cylinder 31 of the slide seat 3 so that the main mower 2 can follow the slide seat 3 to move on the slide rail 111 of the crossbeam 11, and the main mower 2 can It rotates at a certain angle around the axis of the shaft column 211. When the grass raking work is completed, the staff can drive the two slides 3 to move synchronously to the two ends of the beam 11 through the synchronous drive unit 4, driving the main grass raker 2 to separate. When the main grass raker 2 is separated to both sides of the frame 1, the staff rotates the main grass raker 2 so that the main grass raker 2 rotates around the axis of the mounting plate 21 to a direction parallel to the longitudinal beam 12. At this time, the raking teeth of the two main grass rakers 2 are arranged relative to each other. The raking teeth of the two main grass rakers 2 are inward during the transportation process, so that they are unfolded in the working state and folded in the transportation state. The main grass rakers 2 are respectively located at both ends of the frame 1 to maintain the balance of both ends of the frame 1, and are not easy to tip over during the movement and transportation.

[0035] In order to solve the problem of how the synchronous drive unit 4 can simultaneously drive the two slides 3 to move synchronously along the slide rail 111, the following features are specifically set:

[0036] The synchronous drive unit 4 includes two connecting arms 41 of the same length, one end of the connecting arm 41 is hinged to the side of the slide 3 facing the longitudinal beam 12, and the other end of the connecting arm 41 is coaxially hinged to the hinge seat 42. The hinge seat 42 is slidably installed on the longitudinal beam 12, and the hinge seat 42 moves to drive the slide 3 to move symmetrically on the slide rail 111.

[0037] The synchronous drive unit 4 in this embodiment includes two connecting arms 41 of the same length, which are respectively hinged to the slide 3, and the two connecting arms 41 are respectively coaxially hinged on the hinge seat 42. The hinge axis of the connecting arm 41 is vertically arranged, and the position of the longitudinal beam 12 is set on the perpendicular bisector of the cross beam 11. When the hinge seat 42 moves along the length direction of the longitudinal beam 12, it can drive the two connecting arms 41 to synchronously pull the slide 3 to move on the slide rail 111. The slide rail 111 ensures that the moving path of the slide 3 is stable. The connecting arms 41 of the same length cooperate with the position of the longitudinal beam 12 to ensure that the positions of the two slides 3 are always symmetrical relative to the longitudinal beam 12 when the hinge seat 42 moves.

[0038] In order to solve the problem of how to ensure the smooth movement of the articulated seat 42 along the longitudinal beam 12, the following features are specifically set:

[0039] A guide rod 421 parallel to the longitudinal beam 12 is provided on the articulated seat 42, and at least one fixed seat 121 is provided on the longitudinal beam 12. The guide rod 421 is inserted into a guide hole 122 provided on the fixed seat 121; a top plate 422 is provided at the top end of the guide rod 421, and a locking unit 13 is provided on the fixed seat 121. When the top plate 422 is in contact with the fixed seat 121, the locking unit 13 locks the position of the top plate 422.

[0040] The locking unit 13 includes a flat plate 131 mounted on the fixing seat 121, an elastic block 132 is slidably mounted on the flat plate 131, a top limit block 133 is provided on the top of the elastic block 132, the elastic block 132 and the top limit block 133 are elastically connected by a spring 134, and the spring 134 applies an elastic force to move the elastic block 132 downward; the distance between the elastic block 132 and the fixing seat 121 is the same as the thickness of the top plate 422; a paddle 135 is provided on the top of the elastic block 132.

[0041] In this embodiment, at least one fixed seat 121 is provided on the longitudinal beam 12, and a guide hole 122 is provided in the fixed seat 121 with an axis parallel to the length direction of the longitudinal beam 12. The hinge seat 42 is inserted into the guide hole 122 of the fixed seat 121 through the guide rod 421 to ensure that the hinge seat 42 moves along the length direction of the longitudinal beam 12. A top plate 422 is provided at the top of the guide rod 421. The staff can set the position of the fixed seat 121. When the hinge seat 42 moves toward the cross beam 11 and drives the two slides 3 to move to the position of fitting the two ends of the cross beam 11, the top plate 422 moves to fit the fixed seat 121 close to the cross beam 11. At this time, the locking unit 13 locks the position of the top plate 422 to ensure that the positions of the slide 3 and the main grass rake 2 at the two ends of the cross beam 11 are stable; similarly, when the hinge seat 42 moves in the direction away from the cross beam 11 and drives When the two slides 3 move to the fitted state, the top plate 422 moves to fit on the fixed seat 121 away from the crossbeam 11. At this time, the locking unit 13 locks the position of the top plate 422 to ensure that the fitted state of the two main grass rakes 2 is stable, and the grass rake work can be continued; the locking unit 13 in this embodiment ensures that the fixed seat 121 and the waist-shaped hole 123 set on the top of the fixed seat 121, and the elastic block 132 slidably installed between the fixed seat 121 and the waist-shaped hole 123 can move down to a position fit with the other side of the fixed seat 121 when the top plate 422 fits the fixed seat 121, thereby clamping the top plate 422 between the fixed seat 121 and the elastic block 132, locking the position of the slide 3 and the main grass rake 2, and the staff can use the paddle 135 on the top of the elastic block 132 to drive the elastic block 132 to move up to release the lock of the top plate 422.

[0042] In order to solve the problem of how to make the locking unit 13 automatically lock the top plate 422, the following features are specifically provided:

[0043] The elastic block 132 is provided with an inclined surface on one side facing the top plate 422 , and the top plate 422 moves along the inclined surface of the elastic block 132 to push the elastic block 132 upward.

[0044] In this embodiment, an inclined surface is provided on the side of the elastic block 132 facing the top plate 422. When the top plate 422 moves toward the fixing seat 121, it first contacts the inclined surface of the elastic block 132. Then, the movement of the top plate 422 drives the elastic block 132 to compress the spring 134 and move upward. When the top plate 422 passes under the elastic block 132 and abuts the fixing seat 121, the elastic block 132 is reset under the action of gravity and the elastic force of the spring 134 and abuts the other side of the top plate 422, ensuring that the position of the top plate 422 is locked.

[0045] In order to solve the problem of how to ensure the stability of the rotation angle of the main rake 2 in the working state and the transport state, the following features are specifically set:

[0046] A locker 22 for locking the rotation angle of the main grass rake 2 is also installed on the mounting plate 21. The locker 22 includes two insertion rods 221, which are connected by a connecting handle 222; the axis of the insertion rod 221 is parallel to the axis of the shaft column 211, and the insertion rod 221 is symmetrical about the axis of the shaft column 211. The upper end of the insertion rod 221 is inserted into the two sleeves 212 provided below the mounting plate 21; four positioning holes 32 are provided on the upper side of the slide 3, and the positioning holes 32 are evenly spaced around the axis of the insertion tube 31. When the insertion rod 221 is coaxially connected to the sleeve 212 and the positioning hole 32, the rotation angle of the main grass rake 2 is locked.

[0047] The two rods 221 of the lock 22 are respectively located on both sides of the axis of the shaft column 211 and are inserted into the sleeve 212 under the mounting plate 21. The staff can hold the connecting handle 222 of the lock 22 to drive the rod 221 to move in the vertical direction along the axis of the sleeve 212. The slide 3 is located on the circumference of the insertion cylinder 31 and is provided with four positioning holes 32 with equal spacing. When the main grass rake 2 is rotated to be parallel to the crossbeam 11 or parallel to the longitudinal beam 12, the staff can insert the rod 221 into the corresponding two positioning holes 32 so that the insertion The two ends of the rod 221 are respectively inserted into the sleeve 212 and the positioning hole 32 to stabilize the rotation angle of the main grass rake 2. The connecting handle 222 can be extended parallel to the axis of the insertion rod 221. The position of the connecting handle 222 can be set to when the connecting handle 222 is in contact with the upper surface of the slide 3 under the action of gravity, and the two ends of the insertion rod 221 are respectively inserted into the sleeve 212 and the positioning hole 32. The presence of the locker 22 in this embodiment makes the position of the main grass rake 2 stable during the grass rake operation, the placement direction of the grass strips is consistent, and the angle of the main grass rake 2 is stable during the movement and transportation, reducing the risk of the main grass rake 2 rotating during movement to passers-by.

[0048] In order to solve the problem of how to realize that the connecting handle 222 automatically releases the angle lock of the main rake 2 when the slide 3 drives the main rake 2 to move to the two ends of the beam 11, the following features are specifically provided:

[0049] The sleeve 212 is arranged on both sides of the length direction of the main grass rake 2. When the main grass rake 2 rotates to be parallel to the beam 11, the first piston 321 is slidably installed in the positioning hole 32 inserted by the insertion rod 221. The bottom of the positioning hole 32 is connected to one end of the liquid inlet channel 322, and the positioning hole 32 is connected to the oil chamber 33 through the liquid inlet channel 322; the oil chamber 33 is filled with hydraulic oil, and the second piston 331 is slidably installed in the oil chamber 33. The through port 332 at one end of the oil chamber 33 is set on the side of the slide 3 facing the two ends of the beam 11; baffles 112 are provided at both ends of the beam 11, and two horizontal inserts 113 are fixedly mounted on the baffle 112. The cross-sectional shape of the insert 113 is the same as the shape of the through port 332. When the slide 3 moves to the two ends of the beam 11, the insert 113 is inserted into the elastic block 132, pushing the elastic block 132 and the first piston 321 to connect the positioning hole 32 at the top of the handle 222.

[0050] The cam 32 is a substantially parallel arrangement of the two guide rails 32 and the two guide rails 33 are arranged on the bottom of the guide rails 3. The guide rails 32 are arranged on the bottom of the guide rails 3. When the cam 32 is rotated to be parallel to the crossbeam 11, the two guide rails 32 are inserted into the two guide rails 32. The guide rails 32 are substantially parallel to the crossbeam 11. The guide rails 32 are substantially parallel to the crossbeam 11. When the cam 332 is in the process of the slide 3 approaching the baffle 112, the insert block 113 pushes the second piston 331 in the oil chamber 33 to move inward and pushes the hydraulic oil in the oil chamber 33. The hydraulic oil passes through the liquid inlet channel 322 and pushes the first piston 321 to move upward along the axis of the positioning hole 32, pushing out the insertion rod 221 inserted in the positioning hole 32, so that when the slide 3 drives the main grass rake 2 to move to the two ends of the beam 11, the lock 22 automatically releases the lock on the rotation angle of the main grass rake 2. The staff can directly drive the main grass rake 2 to rotate and insert the insertion rod 221 of the lock 22 into the other two positioning holes 32 to lock the length direction of the main grass rake 2 in a position parallel to the longitudinal beam 12, thereby reducing the staff's operating steps.

[0051] In order to solve the problem of how to extend the mowing area of ​​the main mower 2, the following features are specifically set:

[0052] A vertical downward connecting rod 423 is provided below the articulated seat 42, and a waist-shaped hole 123 extending along the length direction of the longitudinal beam 12 is provided on the longitudinal beam 12. The connecting rod 423 passes through the waist-shaped hole 123 and extends to the bottom of the longitudinal beam 12 and slides along the waist-shaped hole 123; the connecting rod 423 is fixedly connected to the sliding mounting seat 424. When the synchronous drive unit 4 drives the slide 3 to move to the two ends of the beam 11, the auxiliary grass rake 425 is installed on the sliding mounting seat 424. The auxiliary grass rake 425 is parallel to the main grass rake 2. The two sides of the auxiliary grass rake 425 are connected to the two sides of the main grass rake 2 and keep the main grass rake 2 and the auxiliary grass rake 425 parallel to the beam 11.

[0053] In the grass rake of this embodiment, the length of the main grass rake 2 after splicing is fixed, and the grass rake area is fixed. However, when the slide 3 drives the main grass rake 2 to move to the two ends of the beam 11, the grass rake area of ​​the main grass rake 2 can be expanded. To this end, in this embodiment, when the synchronous drive unit 4 drives the slide 3 to drive the main grass rake 2 to move to the two ends of the beam 11, the hinged seat 42 drives the sliding mounting seat 424 located under the frame 1 to move synchronously through the connecting rod 423, and the sliding mounting seat 424 moves to between the two main grass rakes 2. The staff can take out the auxiliary grass rake 425 and install it between the two main grass rakes 2. The length directions of the main grass rake 2 and the auxiliary grass rake 425 remain parallel to the beam 11. The auxiliary grass rake 425 and the main grass rake 2 have their teeth positioned parallel, so they can rake the grass strips at the same time, increasing the rake area and improving work efficiency. The two ends of the auxiliary grass rake 425 are connected to the main grass rake 2 to keep the main grass rake 2 in a horizontal state and prevent it from rotating around the axis of the shaft column 211. The auxiliary grass rake 425 can be placed on a mobile vehicle when it is not in operation. The sliding mounting seat 424 is located below the frame 1 and moves. When the articulated seat 42 drives the slide 3 to merge together, the sliding mounting seat 424 is located below the longitudinal beam 12. The longitudinal beam 12 is provided with a waist-shaped hole 123 that avoids the moving path of the connecting rod 423 to ensure that the moving direction of the sliding mounting seat 424 and the top plate 422 is stable.

[0054] Working principle: Two main grass rakes 2 are installed on the frame 1. When the grass rake is working, the two main grass rakes 2 are placed in a direction parallel to the crossbeam 11 of the frame 1, and the two ends of the main grass rakes 2 are in contact. When the mobile vehicle moves, the rake teeth of the two main grass rakes 2 jointly rake the grass cut by the lawn mower into horizontal grass strips, and the synchronous drive unit 4 drives the two slides 3 to move synchronously to the two ends of the crossbeam 11 respectively, driving the main grass rakes 2 to separate. When the main grass rakes 2 are separated to both sides of the frame 1, the staff rotates the main grass rake 2 so that the main grass rake 2 rotates around the axis of the mounting plate 21 to a direction parallel to the longitudinal beam 12. At this time, the rake teeth of the two main grass rakes 2 are arranged relative to each other. The rake teeth of the two main grass rakes 2 are inward during transportation to avoid contact with people or objects on the roadside and cause damage. The main grass rakes 2 are respectively located at both ends of the frame 1 to maintain the balance of both ends of the frame 1, and are not easy to tip over during transportation.

[0055] The above embodiments merely represent one or several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A horizontal grass rake, comprising a frame for connecting to a mobile vehicle, and a main grass rake mounted on the frame, characterized in that: The frame includes a crossbeam and a longitudinal beam perpendicular to each other. The longitudinal beam extends horizontally along the perpendicular bisector of the crossbeam. A slide rail is provided on the crossbeam. Two slides are slidably mounted on the slide rail. The slides are driven by a synchronous drive unit provided on the longitudinal beam to move synchronously and symmetrically about the crossbeam. The bottom of the main grass rake is provided with a mounting plate, on which a vertical shaft column is provided, and the shaft column is inserted into the insertion cylinder provided on the upper side of the slide seat; When the synchronous drive unit drives the slide to move the main rake to the two ends of the beam, the main rake rotates around the axis column to a position where the main rake is parallel to the longitudinal beam and the rake teeth are opposite to each other; When the synchronous drive unit drives the slide to move the main rakes to fit together, the two ends of the main rakes fit together and work parallel to the beam; The synchronous drive unit includes two connecting arms of the same length, one end of each connecting arm is hinged to the side of the slide facing the longitudinal beam, and the other end of the connecting arm is coaxially hinged to the hinge seat, which is slidably mounted on the longitudinal beam. The movement of the hinge seat drives the slide to move symmetrically on the slide rail. A guide rod parallel to the longitudinal beam is provided on the hinged seat, and at least one fixed seat is provided on the longitudinal beam, and the guide rod is inserted into a guide hole provided on the fixed seat; A top plate is provided at the top of the guide rod, and a locking unit is provided on the fixing seat. When the top plate is attached to the fixing seat, the locking unit locks the position of the top plate; The locking unit includes a flat plate mounted on a fixed seat, an elastic block is slidably mounted on the flat plate, a top limit block is provided on the flat plate located on top of the elastic block, the elastic block and the top limit block are elastically connected by a spring, and the spring applies an elastic force to move the elastic block downward; The distance between the elastic block and the fixing seat is the same as the thickness of the top plate; A paddle is provided on the top of the elastic block; The mounting plate is also provided with a lock for locking the rotation angle of the main rake. The lock comprises two insertion rods connected by a connecting handle. The axis of the insertion rod is parallel to the axis of the shaft column, the insertion rod is symmetrical about the axis of the shaft column, and the upper end of the insertion rod is inserted into two sleeves provided below the mounting plate; There are four positioning holes on the upper side of the slide, which are evenly spaced around the axis of the insertion cylinder. When the insertion rod is coaxially connected to the sleeve and the positioning holes, the rotation angle of the main rake is locked; The sleeves are arranged on both sides of the main rake in the longitudinal direction. When the main rake rotates to be parallel to the crossbeam, a first piston is slidably installed in the positioning hole into which the insertion rod is inserted. The bottom of the positioning hole is connected to one end of the liquid inlet channel, and the positioning hole is connected to the oil chamber through the liquid inlet channel. The oil chamber is filled with hydraulic oil, a second piston is slidably mounted in the oil chamber, and a through port at one end of the oil chamber is arranged on a side of the slide seat facing the two ends of the beam; Baffles are provided at both ends of the beam, and two horizontal plugs are fixedly installed on the baffles. The cross-sectional shape of the plugs is the same as the shape of the through-port. When the slide moves to both ends of the beam, the plugs are inserted into the elastic blocks to push the elastic blocks and the first piston to connect to the positioning hole on the top of the handle.

2. A transverse grass rake according to claim 1, characterized in that: A slope is provided on one side of the elastic block facing the top plate, and the top plate moves in contact with the slope of the elastic block to push the elastic block upward.

3. A transverse grass rake according to claim 1, characterized in that: A vertical downward connecting rod is provided below the hinge seat, and a waist-shaped hole extending along the length direction of the longitudinal beam is provided on the longitudinal beam. The connecting rod passes through the waist-shaped hole and extends to the bottom of the longitudinal beam and slides along the waist-shaped hole; The connecting rod is fixedly connected to the sliding mounting seat. When the synchronous drive unit drives the sliding seat to move to the two ends of the beam, an auxiliary grass rake is installed on the sliding mounting seat. The auxiliary grass rake is parallel to the main grass rake. The two sides of the auxiliary grass rake are connected to the two sides of the main grass rake and keep the main grass rake and the auxiliary grass rake parallel to the beam.

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