Concrete spreader

Abstract

The utility model provides a concrete spreader, which relates to the technical field of building construction machinery and is characterized in that two arc-shaped track rods are symmetrically welded among the top ends of four vertical positioning shafts which are adjacent in pairs; two limiting plates are symmetrically welded and sleeved on the arc-shaped track rod, two square sliding sleeves are symmetrically and slidably mounted on the part, positioned between the two limiting plates, of the arc-shaped track rod, and a spring of which the head end and the tail end are respectively propped against and contacted with the two square sliding sleeves is sleeved on the arc-shaped track rod; two thin steel wire pull ropes which are arranged in an X-shaped staggered mode are connected between the two sliding rings close to the arc-shaped rail rod and the two square sliding sleeves on the arc-shaped rail rod. The four driving handle rods which are adjacent in pairs can share two springs for resetting and resetting keeping, so that the situation that the four driving handle rods are respectively provided with a spring for resetting is avoided, and the structure and the manufacturing cost of the distributing machine are simplified to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of construction machinery, in particular to a concrete placing boom. Background Art

[0002] The tail end of the delivery pipe on the concrete placing boom is fixedly connected with a distribution hose for discharging and distributing the concrete. When in use, the delivery pipe is generally pulled by the distribution hose to steer the concrete to adjust the discharge and distribution position of the concrete in the circumferential direction.

[0003] Most of the existing fabric spreading machines lack a mechanism specifically for driving the above-mentioned material delivery pipe to implement steering adjustment, and can only rely on the above-mentioned fabric hose to pull the material delivery pipe for steering adjustment. When performing steering adjustment, the pulling force will be concentrated on the component of the fabric hose and the sleeve connection at the tail end of the material delivery pipe, causing the sleeve connection part to be easily worn or fatigue-fractured, and the fabric hose needs to be replaced more frequently. During replacement, the sleeve connection part remaining at the tail end of the material delivery pipe must be peeled off and removed, and the head end of the broken fabric hose must be trimmed, and then the trimmed fabric hose must be re-sleeved and fixedly connected to the tail end of the material delivery pipe. This operation is extremely troublesome and inconvenient, not only wasting labor, but also occupying the normal operation time of the fabric spreading machine, thereby reducing the production efficiency of the fabric spreading machine. Utility Model Content

[0004] In view of this, the utility model provides a concrete placing boom to solve the problem that the placing hose needs to be replaced frequently, which is extremely troublesome and inconvenient to operate.

[0005] The technical solution proposed by the utility model is: a concrete placing boom, specifically comprising a vertical support, a horizontal load-bearing beam is rotatably mounted on the top of the vertical support, and a U-shaped material guide pipe is fixedly mounted on the horizontal load-bearing beam;

[0006] The head end of the U-shaped material guiding tube is sleeved and fixedly connected with a fabric hose; a force transmission ring is welded and hoisted on the bottom side of the horizontal load-bearing beam near the vertical support part, and four vertical support force transmission rods are welded around the bottom side of the force transmission ring, and the bottom ends of the four vertical support force transmission rods are welded with driving rings, and the driving ring and the force transmission ring are both rotatably matched with the vertical support; the bottom end part of the vertical support force transmission rod is rotatably connected to the driving handle rod, and the tail end part of the driving handle rod is symmetrically rotatably connected with two connecting rods, and the head end of the connecting rod is rotatably connected with a slip ring; two vertical positioning shafts are symmetrically welded on the vertical support near the positions on both sides of the vertical support force transmission rod, and the two symmetrically arranged slip rings are slidably matched with the two symmetrically arranged vertical positioning shafts at the corresponding positions;

[0007] Two arc-shaped track rods are symmetrically welded between the top ends of the four adjacent vertical positioning shafts; two limit plates are symmetrically welded on the arc-shaped track rod, and two square sliding sleeves are symmetrically slidably installed on the part of the arc-shaped track rod located between the two limit plates, and the arc-shaped track rod is provided with springs that are respectively in contact with the two square sliding sleeves at the head and tail ends; two thin steel wire ropes arranged in an X-shape are connected between the two slip rings close to the arc-shaped track rod and the two square sliding sleeves on the arc-shaped track rod.

[0008] Further,

[0009] A counterweight is fixedly mounted on the tail end of the horizontal load-bearing beam.

[0010] Further,

[0011] A circle of inclined ground-contacting support rods is welded around the bottom end of the vertical support column.

[0012] Further,

[0013] Under normal conditions, the two square sliding sleeves and the two limiting plates on the same arc-shaped track rod are in corresponding abutment contact.

[0014] Further,

[0015] The two arc-shaped track rods are concentrically arranged with the vertical support pillars.

[0016] Further,

[0017] The drive ring is rotatably located on the lower half of the vertical support.

[0018] Further,

[0019] An L-shaped feed pipe is fixed through the inner center position of the vertical pillar, the tail end of the U-shaped guide pipe is rotatably connected to the top end of the L-shaped feed pipe, and the vertical support pipe section in the middle position of the U-shaped guide pipe is fixedly connected through the head end of the horizontal load-bearing beam.

[0020] The utility model provides a concrete placing boom with the following beneficial effects:

[0021] 1. When the driving handle is swung downward and rotated to a horizontally expanded state, it can be used to drive the driving ring and the distribution hose in a forward and reverse twisting manner to adjust the discharge and distribution position of the concrete material. Compared with the existing technology, it avoids the need to pull the U-shaped material guide tube by the distribution hose to adjust the discharge and distribution position of the concrete material, and avoids the part of the distribution hose and the U-shaped material guide tube that is connected to the tail end of the sleeve to be fatigued or worn out due to frequent and concentrated pulling force, thereby eliminating the trouble of frequent replacement of the distribution hose, helping to reduce labor waste and indirectly improving the production efficiency of the distribution machine.

[0022] Second, all the four adjacent driving handles of the utility model can share two springs for resetting and maintaining the resetting, eliminating the need to configure a spring for resetting each of the four driving handles, which helps to simplify the structure and cost of the material placing machine to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0024] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0025] In the attached figure:

[0026] Figure 1 Shows a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 Shows a schematic structural diagram of the force transmission ring of the present utility model;

[0028] Figure 3 Shows a schematic diagram of the bottom side structure of the drive ring of the present invention;

[0029] Figure 4 Shows a schematic diagram of the driving handle structure of the utility model;

[0030] Figure 5 The figure shows the bottom side structure diagram of the arc track rod of the present invention.

[0031] List of reference numerals:

[0032] 1. Vertical support pillar; 101. Vertical positioning axis;

[0033] 2. Horizontal load-bearing beam; 201. Force transmission ring; 202. Vertical support force transmission rod; 203. Drive ring;

[0034] 3. Counterweight;

[0035] 4. L-shaped feed pipe;

[0036] 5. U-shaped material guide tube;

[0037] 6. Driving handle; 601. Connecting rod; 602. Slip ring;

[0038] 7. Curved track rod; 701. Limit plate; 702. Square sliding sleeve; 703. Spring; 704. Thin steel wire rope;

[0039] 8. Fabric hose. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Please refer to Figures 1 to 5 ;

[0042] Example 1:

[0043] The utility model provides a concrete placing boom, comprising a vertical support 1, a horizontal bearing beam 2 being rotatably mounted on the top of the vertical support 1, and a U-shaped material guide pipe 5 being fixedly mounted on the horizontal bearing beam 2;

[0044] The head end of the U-shaped material guiding tube 5 is sleeved and fixedly connected with a fabric hose 8; a force transmission ring 201 is welded and hoisted on the bottom side of the horizontal load-bearing beam 2 near the vertical support 1, and four vertical support force transmission rods 202 are welded around the bottom side of the force transmission ring 201, and the bottom ends of the four vertical support force transmission rods 202 are welded with driving rings 203, and the driving ring 203 and the force transmission ring 201 are both rotatably matched with the vertical support 1; the bottom end part of the vertical support force transmission rod 202 is rotatably connected to the driving handle 6, and the tail end part of the driving handle 6 is symmetrically connected with two connecting rods 601, and the head end of the connecting rod 601 is rotatably connected with a slip ring 602; two vertical positioning shafts 101 are symmetrically welded on the vertical support force transmission rod 202 on both sides of the vertical support force transmission rod 202 on the vertical support 1, and the two slip rings 602 arranged symmetrically are slidably matched with the two vertical positioning shafts 101 arranged symmetrically at the corresponding positions;

[0045] The distribution hose 8 is used for discharging and spreading concrete materials. The forward and reverse torsional motion of the drive ring 203 controls the force transmission ring 201, the horizontal load-bearing beam 2, the U-shaped material guide tube 5, and the distribution hose 8 to rotate forward and reverse around the vertical support 1, thereby adjusting the discharging and spreading position of the concrete materials in the circumferential direction to meet the distribution requirements at different locations.

[0046] When the driving handle 6 is swung downward and rotated to the horizontally expanded state, it can be used to twist the driving ring 203 and the distribution hose 8 in a positive and negative direction to adjust the discharge and distribution position of the concrete material. Compared with the existing technology, it avoids the need to use the distribution hose 8 to pull the U-shaped material guide pipe 5 to adjust the discharge and distribution position of the concrete material. It also avoids the part of the distribution hose 8 connected to the tail end of the U-shaped material guide pipe 5 from being easily fatigued or worn out due to frequent and concentrated pulling force. It saves the trouble of frequently replacing the distribution hose 8, helps to reduce labor waste and indirectly improves the production efficiency of the distribution machine.

[0047] The driving handle 6 is provided at four locations and indirectly surrounds the vertical support 1, which is convenient for construction workers to stand in different positions to hold and use, and helps to improve the flexibility of the operation of adjusting the position of concrete material discharge and distribution. In addition, the driving handle 6 is installed in a swinging manner. When idle, it can swing upward and retract to be close to the vertical support force transmission rod 202. On the one hand, it can reduce the occupation of the support space, and on the other hand, it can avoid collision injuries to construction workers caused by long-term protruding support.

[0048] The driving lever 6 is connected to the two connecting rods 601 and the two slip rings 602 on it to form two crank slider mechanisms. Through these two mechanisms, when the driving lever 6 swings downward and expands horizontally, it can pull and drive the two slip rings 602 to slide downward. Sliding any one of the slip rings 602 upward can drive the driving lever 6 to swing upward and reset.

[0049] Two arc-shaped track rods 7 are symmetrically welded between the tops of the four adjacent vertical positioning shafts 101; two limit plates 701 are symmetrically welded and sleeved on the arc-shaped track rods 7, and two square sliding sleeves 702 are symmetrically slidably installed on the portion of the arc-shaped track rod 7 located between the two limit plates 701, and the arc-shaped track rod 7 is sleeved with springs 703 at both ends thereof, which respectively abut against the two square sliding sleeves 702; two thin steel wire ropes 704 arranged in an X-shape and staggered are connected between the two slip rings 602 near the arc-shaped track rod 7 and the two square sliding sleeves 702 on the arc-shaped track rod 7;

[0050] Reference Figure 5 , a slip ring 602 on the driving handle 6 close to the arc track rod 7 is connected to a square sliding sleeve 702 away from it through a thin steel wire rope 704. When the driving handle 6 is swung downward to drive the slip ring 602 to slide downward, the slip ring 602 will pull the compression spring 703 of the square sliding sleeve 702 toward the slip ring 602 through the thin steel wire rope 704. When the driving handle 6 is released, the spring 703 loses the indirect top pressure holding force from the driving handle 6 and rebounds to drive the square sliding sleeve 702 to slide toward the slip ring 602. The sleeve 702 slides back to reset, and pulls and drives the slip ring 602 to slide upward and reset, automatically controlling the driving rod 6 to swing upward and reset. This saves the trouble of additional manual effort to swing the idle driving rod 6 upward and reset it, making the operation and use convenient and helping to simplify the operation steps of the driving rod 6. In normal conditions, the spring 703 can push the square sleeve 702 against the limit plate 701 on the corresponding side, so that the driving rod 6 is kept in the idle and retracted state of swinging upward.

[0051] Reference Figure 5The two square sleeves 702 are pushed for positioning and reset by a spring 703, and the two slip rings 602 on the two adjacent driving handles 6 close to the arc track rod 7 are respectively connected to the slip ring 602 away from them through two thin steel wire ropes 704 arranged in an X shape. This allows the two square sleeves 702 to be used to drive the driving handle 6 away from them to swing upward and reset, so that the two adjacent driving handles 6 can share a spring 703 to reset and maintain the reset. All four adjacent driving handles 6 of the utility model can share two springs 703 for reset and reset maintenance, eliminating the need to configure a spring 703 for reset for each of the four driving handles 6, which helps to simplify the structure and cost of the material distribution machine to a certain extent.

[0052] Preferably,

[0053] A counterweight 3 is fixedly mounted on the tail end of the horizontal load-bearing beam 2 .

[0054] Preferably,

[0055] The bottom end of the vertical support 1 is welded with a circle of inclined ground-contacting support rods.

[0056] Preferably,

[0057] Under normal conditions, the two square sliding sleeves 702 and the two limiting plates 701 on the same arc-shaped track rod 7 are in corresponding abutment contact.

[0058] Preferably,

[0059] Two arc-shaped track rods 7 are arranged concentrically with the vertical support 1 .

[0060] Preferably,

[0061] The drive ring 203 is rotatably located on the lower half of the vertical support 1.

[0062] Based on the first embodiment, the second embodiment:

[0063] An L-shaped feed pipe 4 is fixed through the inner center of the vertical pillar 1, the tail end of the U-shaped guide pipe 5 is rotatably connected to the top end of the L-shaped feed pipe 4, and the vertical support pipe section in the middle position of the U-shaped guide pipe 5 is fixedly connected through the head end of the horizontal load-bearing beam 2.

[0064] The working principle of this embodiment is as follows: when in use, the concrete placing boom is moved and placed at the construction site where concrete needs to be poured and spread, and the tail end of the L-shaped feed pipe 4 is connected to the external concrete feeding equipment. The concrete slurry is sprayed and spread at the construction site in sequence through the L-shaped feed pipe 4, the U-shaped guide pipe 5, and the distribution hose 8;

[0065] The distribution hose 8 is used for discharging and spreading concrete materials. The forward and reverse torsional drive ring 203 controls the forward and reverse rotation of the force transmission ring 201, the horizontal load-bearing beam 2, the U-shaped material guide tube 5, and the distribution hose 8 around the vertical support 1, thereby adjusting the discharging and spreading position of the concrete materials in the circumferential direction to meet the distribution requirements at different locations. The driving handle 6 can be used to rotate the driving ring 203 forward and reverse when it is swung downward and rotated to the horizontally extended state.

[0066] The driving handle 6 is connected to the two connecting rods 601 and the two slip rings 602 on it to form two crank slider mechanisms. Through these two mechanisms, when the driving handle 6 is swung downward and expanded horizontally, the two slip rings 602 can be pulled and driven to slide downward, and any one of the slip rings 602 can be driven to swing upward and reset. Figure 5 A slip ring 602 on the driving handle 6 close to the arc track rod 7 is connected to a square sliding sleeve 702 away from it through a thin steel wire rope 704. When the driving handle 6 swings downward to drive the slip ring 602 to slide downward, the slip ring 602 will pull the compression spring 703 of the square sliding sleeve 702 toward the slip ring 602 through the thin steel wire rope 704. When the driving handle 6 is released, the spring 703 loses the indirect top pressure holding force from the driving handle 6, and will rebound to drive the square sliding sleeve 702 to slide back and reset, and pull and drive the slip ring 602 to slide upward and reset, automatically controlling the driving handle 6 to swing upward and reset.

[0067] In this article, there are several points to note:

[0068] 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0069] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0070] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A concrete placing boom, comprising a vertical support (1), a horizontal load-bearing beam (2) being rotatably mounted on the top end of the vertical support (1), and a U-shaped material guide pipe (5) being fixedly mounted on the horizontal load-bearing beam (2); It is characterized by: The head end of the U-shaped material guide pipe (5) is sleeved and fixedly connected with a cloth hose (8); a force transmission ring (201) is welded and hoisted below the bottom side of the horizontal load-bearing beam (2) near the vertical support (1), and four vertical support force transmission rods (202) are welded around the bottom side of the force transmission ring (201), and the bottom ends of the four vertical support force transmission rods (202) are welded with driving rings (203), and the driving ring (203) and the force transmission ring (201) are both rotatably matched with the vertical support (1); the vertical support force transmission rod ( The bottom end of the vertical support rod (202) is rotatably connected to a driving handle (6), and the tail end of the driving handle (6) is symmetrically rotatably connected to two connecting rods (601), and the head end of the connecting rod (601) is rotatably connected to a slip ring (602); two vertical positioning shafts (101) are symmetrically welded on the vertical support column (1) at positions close to both sides of the vertical support force transmission rod (202), and the two symmetrically arranged slip rings (602) are slidably matched with the two symmetrically arranged vertical positioning shafts (101) at corresponding positions; Two arc-shaped track rods (7) are symmetrically welded between the top ends of the vertical positioning shafts (101) at four adjacent locations; two limiting plates (701) are symmetrically welded and sleeved on the arc-shaped track rod (7); two square sliding sleeves (702) are symmetrically slidably installed on the portion of the arc-shaped track rod (7) located between the two limiting plates (701), and springs (703) are sleeved on the arc-shaped track rod (7) and respectively abut against the two square sliding sleeves (702) at the head and tail ends; two thin steel wire ropes (704) arranged in an X-shape and staggered are connected between the two slip rings (602) close to the arc-shaped track rod (7) and the two square sliding sleeves (702) on the arc-shaped track rod (7).

2. A concrete placing boom according to claim 1, characterized in that: A counterweight block (3) is fixedly mounted on the tail end of the horizontal load-bearing beam (2).

3. The concrete placing boom according to claim 1, characterized in that: The bottom end of the vertical support (1) is welded with a circle of inclined ground-contacting support rods.

4. The concrete placing boom according to claim 1, characterized in that: Under normal conditions, the two square sliding sleeves (702) and the two limiting plates (701) on the same arc-shaped track rod (7) are in corresponding abutment contact.

5. The concrete placing boom according to claim 1, characterized in that: The two arc-shaped track rods (7) are arranged concentrically with the vertical support pillar (1).

6. The concrete placing boom according to claim 1, characterized in that: The drive ring (203) is rotatably located on the lower half of the vertical support (1).

7. The concrete placing boom according to claim 1, characterized in that: An L-shaped feed pipe (4) is fixedly passed through the inner center position of the vertical support column (1), the tail end of the U-shaped guide pipe (5) is rotatably connected to the top end of the L-shaped feed pipe (4), and the vertical support pipe section at the middle position of the U-shaped guide pipe (5) is passed through and fixedly connected to the head end of the horizontal load-bearing beam (2).

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