FI116630B - Snow thrower, has snow jet guided by device moved using actuator operated lever mechanism and is mounted in separate frame with load indicators - Google Patents

Abstract

The thrower has a blade for packed snow whose position can be altered in the forward horizontal direction depending on the direction in which the thrower is moving. Cleared snow is removed via a screw-like transfer device in a separate thrower region, from which a jet of snow emerges. This jet is guided by a device whose orientation can be quickly changed from one side to the other during half a revolution using a lever arm mechanism operated by an actuator. The thrower is secured by fasteners in a separate frame equipped with load indicators which prevent damage in the event of a collision.

Description

116630

Snow blower

The invention relates to a snow thrower. The invention particularly relates to a device for removing snow in two driving directions.

5 The two-directional snow thrower has been found to be effective in removing snow from roads, yards and the like. In both directions, it must be possible to control the accumulation of snow in the device, directing the snow to the throwing means and directing the snow jet in the desired direction.

In the known two-way slings, the snow jet cannot be effectively and precisely controlled in different directions. This is due to the slow operation of the jet controls relative to the vehicle speed. Similarly, depending on the direction of travel, the collectors changing position will operate relatively slowly. Also, known snow throwers do not utilize a separate traction device to which the spinner itself is attached to prevent damage in the event of collision bolts or similar collisions.

US6154985 discloses a bidirectional snow thrower with a polanne blade that can be rotated to different positions, which are essentially vertical, according to the direction of travel. The blade is in the lower position when driving forward and lifted by the hydraulic cylinder: when reversed. When the direction of travel is reversed, the lifting device must be • adjusted with the lifting gear to the ground. When changing forward gear, the spinner must be lowered and tilted to a new position. Similarly, gear; '! When moving backwards and forwards, the centrifuge must be raised and tilted back to the correct driving position. This results in extra time for reversal and; · ·. the efficiency of snow removal will suffer. The structure of the device is relatively complicated 25 and contains sensitive parts. For example, the protective bell included in the device and essential for its operation is easily damaged, especially at low temperatures. Va - '!!; when making bellows material, you have to compromise on acquisition cost; · * Between stiffness and endurance.

The invention makes it possible to efficiently collect snow in both driving directions, since it has a collector device which changes position mainly in the horizontal direction according to the driving direction. The snow is directed by means of screw-like transfer means: ': into a separate throwing chamber, from which the snow jet is ejected far enough by the direction of the snow guide. The direction of the snow guide can be changed quickly from side to side during work. The centrifuge of the invention has a fully rotatable snow guide 2 116630 arranged in a curved manner, whereby the flow conditions of the snow in the guide remain unchanged. The direction of the jet can be quickly changed by more than half a turn because the operation of the snow guide is controlled by a suitable lever mechanism and actuator using the mechanism. The present snow thrower has 5 separate attachment bodies to which the spinner itself is secured by means of overload protectors to prevent damage in the event of a collision.

The collection equipment consists of a hinged polyanthal steel, which changes direction when the direction of travel changes. The rigid blade of structure is arranged essentially transverse to the direction of travel. The polanter blade is secured to arms 10, which are preferably mounted at one end by bearing members located at the same straight line as the rotation center of the transmission members. The blade rests on the surface to be cleaned and tends to move to the opposite side of the drive when driving. Thus, when reversing the driving direction, the blade will move in the driving direction to the rear of the transfer members, guiding the snow transfer members. The placement of the blade blade near the transfer means is advantageous because the blade can at the same time act as a counter blade in the cutting operation. If necessary, the transfer members can be adjusted to strike the counter blade at a desired distance, whereupon the blades crush a hard polant for easy transfer. When changing direction, the driver does not necessarily need to change or tilt the machine altogether, but simply needs to direct the snow jet safely in the desired direction.

: V The snow transport equipment transfers the snow to a special throwing chamber, from where the blades throw the snow to the snow guide. The ejection chamber is trough-shaped in its outer circumference, to which troughs are fitted with suitable play.

The snow guide is mounted on the upper end of the throwing chamber with suitable bearing means. 25 The lever mechanism that swivels the snow guide includes a curved lever that is secured at one end by auxiliary lever to the snow guide. The lever ratios are selected such that the relatively small actuator movement causes the snow guide to rotate more than 180 degrees. The lever mechanism is preferably operated by a hydraulic cylinder: it is fast-acting, reliable and inexpensive.

The snow thrower according to the invention is remarkably simple in construction. Ku-': Wearable parts such as poland blade, transfer gear and snow guide can be made of - · wear-resistant materials so that the device does not contain fragile parts.

..: The transmission of the snow transport equipment may be carried out by conventional means such as gearboxes or the like.

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The present invention solves the above problems and overcomes the drawbacks of the prior art and provides an effective and reliable two-way snow thrower.

The device according to the invention is characterized in what is defined in the independent claim.

In the following, the invention will be described in detail with reference to some preferred embodiments and with reference to the accompanying drawings, in which: Fig. 1 is an exploded and partially sectional view of a drive device; Fig. 2 is a rotation 90 degrees to the left; Fig. 3 shows the device of Fig. 1 rotated 90 degrees to the left and cut away from the throwing chamber with the driving direction rearward, Fig. 4 shows a lever mechanism 15 of the snow guide of the device according to the invention in another extreme position viewed from above;

: Figures 1-5 show a reversible snow thrower for cleaning snow surface 2. The centrifuge consists of a frame 1, a snow transfer device 3, an energy transfer means 4, a snow thrower 5, a snow guide means 6, a poland blade 7 ·: · '! 20 and fastening means 8.

The body 1 consists of a semi-cylindrical jacket 1a closed at both ends by plates 1b. Both plates 1b are provided with bearing housings 1c, on which the luminescent devices 3 and the poland blade 7 can be mounted. In connection with the body 1 are the stops 1e of the polar blade 7 and the fastening structures 1d of the vehicle which are, for example, suitable housing structures.

The snow transfer apparatus 3 consists of a tubular shaft 3a to which the snow transfer members 3c and 3d are attached. At each end of the tubular shaft are ·; ·; bearing means 3b and 3e for mounting apparatus 3 to bearing housings 1c.

The transfer members 3c are screw-mounted on the shaft 3a so that they can move the reader into the snow throwing chamber 5c. On the other side of the snow-throwing chamber 5c there are opposite transfer members 3d, which, however, are arranged on a screw line of opposite handness relative to the members 3c.

The energy transfer device 4 includes a housing 4a located at one or both ends of the centrifuge, within which the energy transfer means 4b is located. The energy transfer means 4b 5 are, for example, sprockets mounted on a bearing member 3b. The transmission of the snow thrower may be partly or wholly mechanical or wholly hydrostatic (not shown).

The snow throwing device 5 consists of throwing blades 5a mounted on the shaft 3a and moving in the throwing chamber 5c. The ejector chamber 5c is formed by a diaper 5b arranged in the form of a trough 10 surrounding the lumen transfer means, on which the ejector blades 5a are arranged to rotate. In connection with the discharge chamber, there is a tangentially located discharge channel 5d.

The snow guide means 6 consist of a snow guide 6a mounted in connection with the snow ejection channel 5d by means of bearings 6b, 6b1 and 6c. The bearing spacers 15b and 6b1 are preferably flanged opposing flanges that can rotate under the control of the grooved wheels 6c. The grooved wheels 6c may be mounted on either flange 6b or 6b1, whereby said flanges may rotate relative to one another.

The snow guide means 6 is controlled by a lever mechanism including a first lever 6e, 6f and a second lever 6d. The first lever 6e, 6f consists of a curved actuator; ·; 'Sio portion 6e and primary portion 6f at an angle thereto. First: · The 'lever is fixedly mounted on the spindle body or the part connected to the body' by a joint 6h, and at its other end a curved second lever 6d is attached by the joint 6h1. The other end of the second lever 6d is secured to the snow guide by a joint 6h2. The centers of the arms of the levers 25 practically align with the axis of symmetry of the snow guide, with the mechanism in the second extreme position. The lever ratios of the levers 6e, 6f and 6d are selected such that the actuator 6k moves the mechanism to rotate: "": the snow guide 6 more than 180 degrees.

Polannan blade 7 consists of a steel 7a which rests on a surface 2 to be cleaned. At each end of the blade ·: * i 30 7a are provided arms 7b, to which end bearings 7c are attached. The bearing means 7c are arranged in connection with the bearing cracks 1c at the ends 1b of the body 1. Preferably, the bearing member 7c is a ring disposed on the outer circumference of the bearing housing 1c. Since the poland blade 7 is pivotally mounted as described above, it engages in the driving direction on the backside of the transfer means 3.

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Blade 7a has a total of two cutting edges 7d, one for each direction of travel. The movement of the blade 7 is limited in both directions by the stops 1e in connection with the body 1. The blade blade 7 is very robust in structure because it can be subjected to a considerable force proportional to the weight of the vehicle by means of vehicle controls. In a preferred embodiment, the blade 7 has a symmetrical cross-section.

The fastening means 8 consist of a fastening body 8a having, for example, conventional 3-point fastening means 8b. The mounting body 8a is attached to the spinner by means of fastening means 8c and 8d with overload protectors, such as break bolts. The counterparts of the parts 8c and 8d, such as the corresponding lugs, are attached to the structures 1d and 1e associated with the body 1.

The device according to the invention operates as follows. The snow thrower is connected to the traction machine by means of attachment means 8 provided with overload protectors to minimize damage in the event of a collision. The ejection power transmission means (not shown in Fig. 15a) are connected to the snow thrower and the output shaft is actuated, whereby the power transmission means 4 of the centrifuge transfer power to the snow transmission and ejection means 3 and 5.

The snow guide 6 is directed in the desired direction and the traction machine can start snow removal either forward or backward. Whichever direction is chosen, the polanter blade 7 leaning on the surface to be cleaned 2 automatically moves to the rear of the snow transfer means in the driving direction due to the relative movement of the surface 2 relative to the blade 7. Thus, the poland blade 7 is always on the backside of the transfer means 3, guiding the snow to the transfer means. The blade can also act as a counter blade in the cutting process. The motion of the hub blade is limited in both directions by the constraints 1e, whereby a force proportional to the weight of the hub on the surface 2 is applied by the actuator actuators 25 to the hub. In some embodiments, the polan blade 7 may be controlled by a suitable actuator (not shown), whereby the polan blade may be positioned at a suitable position during work between the extreme positions delimited by the limiters 1e.

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The snow transport means 3 transfer the snow transversely to the ejector chamber 5c, if * · '·· [30a] the ejector blades 5a throw it into the ejector channel 5d placed tangentially to the ejector chamber and from therein to the snow guide 6. The snow guide 6 is guided vi-: 1; a pump mechanism 6d, 6f, 6e, wherein the snow guide 6 is pivoted by the means 6c. : Fast over 180 degrees.

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Snow removal with the centrifuge of the invention is efficient, hassle-free and safe, since the driver can focus most of his attention on driving and directing the snow jet in the desired direction.

The drawings and the accompanying description are intended only to illustrate the present invention. The details of the device according to the invention may vary within the scope of the appended claims and the inventive idea presented in the description of the invention. It will be obvious to one skilled in the art that the technical solutions of the device may vary depending on the intended use. Embodiments of the invention may vary according to the operating conditions and customer needs and within the manufacturing solutions to be implemented during production.

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Claims (10)

A two-way snowblower that cleans surface (2), which includes snowbeam transfer means (3) transverse in the direction of travel of the tubing, and a blade for packed snow (7), snow throwing system (5) and reversible snow control devices (6), which are tangentially positioned relative to the snow's means of transmission, characterized in that - whatever the direction of travel, the blade for packed snow (7), which abuts against the surface (2) being cleared, is arranged to move to the back of the snow transfer means (3) in the driving direction, which depends on the relative movement of the surface (2) in relation to the blade (7), the blade for packed snow (7) is stored pivotally in connection with the transfer means (3) of the snow by means of shaft (7b) ) and on the bearing means (7c), and - movement of the blade for packed snow (7) is limited by limiter (1 e) in both driving directions, where a force proportional to the weight of the combination can be directed to the surface 15 (2) m ed blade for packed snow, using the tractor actuator. Snowflake according to claim 1, characterized in that - the snow throw system (5) is formed by throwing bed (5a) which is attached to a shaft (3a), and which throwing bed has been arranged to move in a throwing room (5c), 20. the locking room ( 5c) is formed by a casing (5b) which surrounds the transfer means of the snow, and which has been arranged in the form of a chute in which the casing bed (5a) is adapted, and *: *: in connection with The casting chamber (5c) has a casting channel (5d), tangentially located in the * to the casting chamber. 25 Snowblower according to claim 1 or 2, characterized in that: - in the blade (7a) there are a total of two cutting edges (7d), one for both driving direction-; - the blade (7a) has a symmetrical cross-section, and 30. In the two ends of the blade (7a), a shaft (7b) has been arranged, on which its ends have been secured storage means (7c), which are adapted in connection with bearing housings (1c) at the end (1b) of the frame (1). t * Snowblower according to one of Claims 1 to 3, characterized in that the blade (7a) is secured to a shaft (7b) which is mounted at one end with storage means (7c) which are on the same straight line as the transfer means (3). roteringspolnav. 10 116630 Snowblower according to one of claims 1-4, characterized in that the bearing member (7c) is a ring adapted to the outer frame of the bearing housing (1c). Snowblower according to one of claims 1-5, characterized in that the 5-snow control means (6) is formed by a snow control device (6a), which is stored in conjunction with the snow throw channel (5d) with storage means (6b) and (6b1). ), which are opposed to flanges, storage means (6b, 6b1) have been arranged to rotate with guide of locking discs (6c), and 10. locking discs (6c) are arranged to be stored in one of the flanges (6b) or (6b1). , since the flanges can turn in relation to each other. Snowblower according to one of claims 1-6, characterized in that - the control means (6) of the snow are arranged to be controlled by a lever mechanism comprising a first lever (6e, 6f) and a second lever (6d), - the the first lever (6e, 6f) is formed by a bent secondary part (6e) and a primary part (6f) staring at an angle with respect to the secondary part - the first lever (6e, 6f) is firmly mounted to the frame of the snow lung (1a) or to a portion which contacts the frame with a hinge (6h), and a curved second lever (6d) is fixed to its other end by a hinge (6h1), the other end of the second lever (6d) is attached to the snow control device with a hinge (6h2), when when the mechanism is in its other end position, the center points of the levers' beakers are arranged to join with each other virtually on the axis of symmetry of the snow control device, and.> λ: * 25 - lever arms of the levers (6e, 6f) and (6d) are selected so that the mechanism has been arranged a turning snow control device (6) above 180 degrees with the movement of the adjusting device (6k). * * * * Device according to claim 7, characterized in that the actuator (6k) is a hydraulic cylinder. A snowflake according to one of claims 1-8, characterized in that the blade for packed snow (7) is arranged to be controlled by a suitable actuator, since the blade for packed snow (7) can be positioned in suitable operation between end positions, which are limited by limiter (1e). Snowblower according to one of claims 1-8, characterized in that - - fastening means (8) are formed by a fastening frame (8a) which includes fastening means (8b), and - the fastening frame (8a) is fixed in the snowblower with fastening means ( 8c, 8d), such as break bolts, which are equipped with overload indicators.